Establishing an On-Site Construction Pilot for Collaboration Between Humans and Heavy-Duty Robots

Abstract: This paper presents a pioneering pilot within the FORTIS EU project, aimed at enhancing the integration of autonomous heavy-duty robots in construction environments. The pilot has been established to assess the potential of these robots to revolutionise industry standards, specifically in tasks involving transportation and assembly. The paper offers insights ...

Design and Prototype of a Multi-Functional Robotic Cell for the Fabrication of Exterior Retrofit Panels

Abstract: This paper presents an ongoing project of designing and prototyping a multi-functional robotic cell for the fabrication of exterior retrofit panels. To address the cost and labor-intensive challenges in producing customized retrofit panels, we first conduct a simulation-based study to evaluate the feasibility of introducing robotic technologies into the fabrication ...

ExACT: An End-to-End Autonomous Excavator System Using Action Chunking With Transformers

Abstract: Excavators are crucial for diverse tasks such as construction and mining, while autonomous excavator systems enhance safety and efficiency, address labor shortages, and improve human working conditions. Different from the existing modularized approaches, this paper introduces ExACT, an end-to-end autonomous excavator system that processes raw LiDAR, camera data, and joint ...

Work Zone Safety: Benchmarking Studies between Virtual Reality-based Traffic Co-simulation Platform and Real Work-Zones

Abstract: The need for improvements in roadway work zone safety becomes increasingly pressing, with continuous accidents/incidents reporting around a thousand fatalities in the United States in 2021 alone. Though rare, efforts that lead to a deeper understanding of worker behaviors around work zones are necessary to increase safety of workers. Unlike ...

CrackGauGAN: Semantic Layout-based Crack Image Synthesis for Automated Crack Segmentation

Abstract: Automated crack inspection, particularly deep learning (DL)-based crack segmentation, is crucial for the effective and efficient maintenance, repair, and operation of civil infrastructure. However, the performance of DL-based segmentation methods is often limited by the scarcity of pixel-wise labeled crack images. This paper presents CrackGauGAN, an automated crack image synthesis ...

Pre-trained language model based method for building information model to building energy model transformation at metamodel level

Abstract: Building energy model (BEM) creation based on building information models (BIM) can save model re-creation time during building design phase. However, current BIM-to-BEM transformation is at the model level so the BEM is re-generated every time when the change happens to the BIM. Since design changes happen frequently and the ...

Computer Vision as Key to an Automated Concrete Production Control

Abstract: The need to reduce CO2 emissions from concrete leads to increasingly complex mix designs involving e.g. CO2 reduced cements, recycled materials, and various chemical additives. This complexity results in a larger sensitivity of the concrete to unpredictable fluctuations in both, the base material properties and in boundary conditions such as ...

Investigating the Neural Correlates of Different Levels of Situation Awareness and Work Experience

Abstract: Maintaining good situation awareness is crucial for workers’ safety on the dynamic and complex construction site, and workers with more experience may contribute to better performance in safety. However, little research has investigated the cognitive differences between experienced and novice workers regarding different levels of situation awareness (Level 1: perception, ...

Inline image-based reinforcement detection for concrete additive manufacturing processes using a convolutional neural network

Abstract: Within the scope of additive manufacturing of structural concrete components, the integration of reinforcement provides an inevitable opportunity to enhance the load-bearing capacity of the elements. Besides the rebar integration itself, ensuring the as-planned concrete cover is key for achieving a stable and long-term legally permissible integration. The thickness of ...

Integration of laser profiler feedback into FIM for additive manufacturing in construction

Abstract: This research delves into the utilization of laser profiling technology within the realm of Three-Dimensional (3D) printing in the construction industry. The primary emphasis is on achieving a seamless integration of Fabrication Information Modeling (FIM), Additive Manufacturing (AM), and Digital Twinning (DT). The study involves the capture of precise measurements ...

Component pose reconstruction using a single robotic total station for panelized building envelopes

Abstract: The construction industry can benefit greatly from increased automation in construction processes in terms of precision, time, and labor costs. This is especially true for prefabricated construction for either new buildings or envelope retrofits. Here, prefabricated components are manufactured offsite according to design specifications and installed onsite. Accurate information on ...

Assessment of Traditional and Robotic Approaches to Interior Construction Layout: A Framework and Comparative Study

Abstract: As the construction industry witnesses a growing integration of robots and automated systems on complex construction sites, project teams exhibit varying definitions of successful robot employment. Notably, there is an absence of standard criteria for stakeholders to assess the impacts of these technologies on productivity, cost, safety, and pertinent human ...

Development of automated transport system

Abstract: We have developed an automated transport system for construction sites, manufacturing plants, and distribution warehouses, such as an automated transport trolley, an automated transport forklift, and a transport management system. It can be instructed by a tablet to make a delivery and it can move autonomously along a given route ...

Enhancing UAV Efficiency in Bridge Inspection through BIM-based Flight Planning and Image Quality Assurance

Abstract: Unmanned Aerial Vehicles (UAVs) have been widely applied for bridge inspection, and significant progress has been made to automate the UAV-enabled inspection process. However, current solutions face two primary challenges: they typically rely on pilots' experience to create a pre-defined flight path for automated image collection, and the potential for ...

MPC-Based Proactive Swing Attenuation for Double-Pendulum Overhead Cranes

Abstract: Overhead cranes, which are traditionally classified as underactuated systems, face a persistent challenge in balancing the assertiveness of trolley movement and the amplitude of the payload oscillation. This difficulty is exacerbated by the crane’s inherent double-pendulum characteristics. To improve the operational efficiency and fault tolerance of cranes when lifting large ...

Unified framework for mixed-reality assisted situational adaptive robotic path planning enabled by 5G networks for deconstruction tasks

Abstract: The development of 5G networks is expected to accelerate the realization of Industry 4.0 with its extended capabilities such as network slicing, reduced latency, increased bandwidth and much more. Leveraging these improved network performances, real time machine to machine communication could be realized. Moreover, in situations where human-machine interactions take ...

Fast-Pixel-Matching Algorithm for Automated Shear Stud Welding Based on the Integration of 2D Drawings and Structured Light Cameras

Abstract: Due to the lack of depth information, using 2D drawings to guide robotic manufacturing is difficult, such as stud welding and drilling. In this paper, a new algorithm, Fast-Pixel-Matching (FPM), is proposed to provide depth information for precise point positioning based on 2D drawings and structured light cameras. Based on ...

Implementation of a Robotic Manipulator End effector for Construction Automation

Abstract: The construction industry presents very strong challenges such as being an industry where many fatalities occur, and delivery times have a great impact on the cost of the final product. In this context, an area of opportunity was found, which consist of automating the process of grabbing and nailing plywood ...

System integration of construction planning and robots for a joint civil engineering and robotics course

Abstract: This study describes the development of a system that links construction planning and construction robots for civil engineering and robotics-integrated education programs. In this program, it is possible to learn construction planning and automation using model construction robots. The major issue was that the information in the developed construction plans could not ...

Advancements and Future Visions in Earthmoving Swarm Technology

Abstract: This study examines autonomous earthmoving systems with collaboration among diverse machine types. It focuses on their application in a practical use case involving excavator loading, dumper transport, bulldozer spreading, and roller compacting for road construction. Drawing insights from evaluated systems, the research addresses implementation considerations such as the degree of ...

A construction robot path planning method based on safe space and worker trajectory prediction

Abstract: As the key to intelligent construction, construction robots can perform complex and dangerous tasks instead of workers. Construction robot path planning (CRPP) is a prerequisite for executing tasks. However, dynamic environments and moving workers at sites create significant difficulties for CRPP. To solve this issue, this research proposes a construction ...

Factors Leading to Reduced Construction Productivity in Unmanned Construction

Abstract: This study investigates factors affecting construction productivity in unmanned construction, a method developed in Japan for safely conducting recovery operations post-disaster using remotely operated machinery. Despite its widespread adoption, unmanned construction is typically less efficient than conventional methods. This research aims to identify and quantify the causes of this reduced ...

A Framework and Cyber-Physical System Architecture for Cloud-Based Construction Monitoring with Autonomous Quadrupeds

Abstract: Construction progress monitoring is a crucial aspect of project management, ensuring project completion on time, within budget, and meeting quality standards. Current data collection and processing methods are time-consuming and labor-intensive, and modern technologies, including robots and computer vision, offer a potential solution to this challenge. While past research has ...

Integrating Automation into Construction Site: A System Approach for the Brick Cutting Use Case

Abstract: The integration of robotics, automation and digital technologies into construction processes offers opportunities for increased efficiency, adaptability and sustainability. However, a comprehensive integration of these technologies is still missing. This paper proposes an integrated systems approach using collaborative construction robotics, a modular construction container and an advanced tasks application connected to ...

Case study on the applicability of a construction site layout planning system

Abstract: This study presents the development and application of a construction site layout planning (CSLP) system, emphasizing the importance of efficient, safe, and cost-effective planning in construction management. Recognizing the limitations of current algorithmic and simulation-based approaches, this research advocates for a CSLP system that prioritizes communication speed, ease of use, ...

Discrete Event Simulation to Predict Construction Equipment Emissions on a Digital Twin Platform

Abstract: Emissions from machinery that is primarily fueled by Diesel represent a significant environmental concern in the construction sector. Traditional monitoring methods, including both Simplified and Portable Emissions Measurement Systems (SEMS and PEMS, respectively) encounter practical and financial constraints when deployed extensively across the diverse machinery types. This paper introduces a ...

Performance Evaluation of Genetic Algorithm and Particle Swarm Optimization in Off-Site Construction Scheduling

Abstract: Off-site construction (OSC) is gaining significant attention due to its promising benefits, including reduced time, cost, and waste, along with improved quality, productivity, and safety. However, the dynamic nature of the production process (i.e., non-typical process time) introduces challenges in OSC production line, such as: (i) bottlenecks: (ii) workstation idle ...

Developing a novel application to digitalize and optimize construction operations using low-code technology

Abstract: Low-code is an emerging technology allowing subject experts with no information technology background to develop their own digital solutions to operational challenges. Low-code has shown potential to support digitalization in different business scenarios. Nevertheless, there is a lack of scientific literature exploring how this technology could be leveraged in the ...

GPT-based Logic Reasoning for Hazard Identification in Construction Site using CCTV Data

Abstract: The applications of deep learning-based robust surveillance are vital for improving safety at construction sites, with closed-circuit television (CCTV) systems serving as a pivotal tool in achieving this goal. Despite the recent progress in state-of-the-art deep learning models, the task of hazard identification remains a persistent difficulty due to the ...

Assessing the Financial Dynamics of Modular Offsite Building Projects

Abstract: Current project development financial modeling approaches have been utilized for traditional stick-built construction. This paper presents a novel system dynamics simulation model to analyze the financial dynamics of modular offsite building projects. The model captures the complex interactions between construction activities and cash flows, allowing for the evaluation of various ...

Impacts of Multi-skills on Project Productivity and Completion Time: A Building Renovation Case Study

Abstract: This paper delves into the complexities of integrated supply chain planning decisions and project management in the construction industry, specifically about multi-skill, resource-constrained, and multi-project scheduling problems. To address this issue, we propose a mathematical mixed-integer linear programming (MILP) model that optimizes schedules for multiple projects involving different activities, renewable ...

Integrating the AR-QR Code Approach with Positioning and Orientation Sensors to Facilitate Deploying Drawings Information on Job Sites

Abstract: While general contractors often use tablets to review design and construction information, subcontractors typically rely on paper-based methods. Each of these methods has its own set of advantages and challenges. The AR-QR code approach aims to bridge the gap between paper-based and digital methods, leveraging the power of Augmented Reality ...

Virtual Reality-based Blockchain Application for Optimized Collaborative Decisions of Modular Construction

Abstract: Game engine technology has been studied extensively lately in offsite construction (OSC) research due to its ability to develop virtual reality (VR) environments that can be used in the decision-making process prior to the actual project implementation. However, accessing these VR scenes typically requires the participant to be in a ...

The Role of Large Language Models for Decision Support in Fire Safety Planning

Abstract: This paper explores the integration of Large Language Models (LLMs), specifically GPT-4, in fire safety planning and knowledge-based systems within the Architecture, Engineering, and Construction industry. Focusing on overcoming challenges in expert systems, it presents an AI-in-the-loop model, illustrating how LLMs enhance decision support. The paper introduces a scenario analysis ...

Understanding Professional Perspectives about AI Adoption in the Construction Industry: A Survey in Germany

Abstract: This study investigates the transformative impact of Artificial Intelligence (AI) in Germany's construction industry. Through a comprehensive survey and interviews with 94 industry professionals, the research explores current AI adoption rates, challenges, and future potential. As the construction sector stands at the brink of digital revolution, the paper uncovers nuanced ...

State of the Art Review of Technological Advancements for Safe Tower Crane Operation

Abstract: This paper investigates technological solutions for safe tower crane operation. Initially, to understand the severity of the problem a background research is done to investigate the impact of unsafe tower crane operation on human lives and the key factors that lead to accidents. The paper recognises human-related error as the ...

A Delay Liquidated Damages (DLD) Mitigation Model based on Earned Schedule (ES) and Earned Value Management System (EVMS) concepts

Abstract: After a slowdown in growth following COVID-19, the global engineering, procurement, and construction (EPC) market has been recovering and experiencing sustained growth since 2021. Nevertheless, the profit margins in the global EPC plant industry continue to decline. This study proposes the earned schedule-delay liquidated damages (ES-DLD) model that integrates the ...

Impact of Integrated Supply Chain Platforms on Construction Project Management

Abstract: Supply chain challenges in the construction industry often lead to cost and time overruns, making it imperative to enhance supply chain management. To offer a tool to construction decision-makers, this study investigates the impact of Integrated Supply Chain Platforms (ISCP) on construction project management in the context of Nordic European ...

Innovative standardized cost data structure: application on price list document for estimating public tendering

Abstract: In the construction industry, managing cost data represents a major challenge. One of the main issues is the inaccurate cost estimation of a project. This study, based on an innovative approach, standardizes and restructures unit cost items defining a new cost ontology starting from fundamental resources (materials, labor, and equipment) ...

A Proposed Framework to Implement Advanced Work Packaging (AWP) with the Support of Blockchain

Abstract: Advanced Work Packaging (AWP) offers a structured methodology to improve construction project outcomes through planning alignment and work packaging. However, AWP implementation itself encounters obstacles related to information security, access controls, and supply chain optimization. As an emerging technology with innate capabilities around decentralization, security, and transparency, blockchain holds promise ...

Construction worker fatigue load management using IoT heart rate sensing system

Abstract: Many studies consider excessive fatigue as one of the reasons for accidents among construction workers, especially in special hazardous work environments such as working at heights, heavy physical labor, and confined spaces. Unfortunately, due to factors such as complex environments, unstable equipment, and frequent movement of workers, there is little ...

Towards Automation in 5s – Classification and Detection of Images from Construction Sites

Abstract: Traditional construction management practices often suffer from inefficiencies and waste, leading to increased costs and project delays. Lean Construction (LC), by emphasizing waste reduction and customer value prioritization, has emerged as an effective construction management system. In recent years, efficiency enhancement approaches such as Lean are being further augmented by ...

Analysis of XES and OCEL Data Schemas: Towards Multidimensional Process Mining of Intertwined Construction Processes

Abstract: Despite current digital transformation attempts, productivity in the construction industry has remained stagnant for decades. Construction organizations generate vast amounts of data from their day-to-day operations. However, these valuable digital footprints frequently remain underutilized and isolated in different IS (Information Systems). To tackle this issue, process mining, a novel and ...

Developing Time-Cost & Storage Optimization Model for a Construction Project – A Linear Programming Approach

Abstract: Project managers in the construction industry confront challenges in managing inventories and executing projects within the scheduled time frame. In this research, a mathematical model is given for applying the Lagrange method and linear programming (LP) to tackle the time-cost and storage-related difficulties that arise in the construction project. The ...

Prototype development of an automated 3D shop drawing generation tool for reinforcement work

Abstract: In concrete structure projects, activities such as drawing, fabrication, and assembly related to the reinforcement substantially impact the schedules and costs. It is necessary to apply building information modeling (BIM) to smoothly share and distribute information regarding reinforcement among the diverse range of suppliers to streamline work. This study aims to ...

Impact of Technology Use on Time Needed for Information Retrieval for Frontline Supervisors in the Construction Industry

Abstract: In the construction industry, information is considered to be the lifeblood of modern construction projects. As a data-dependent industry, information retrieval and technological innovations are essential for optimizing construction performance. Currently, the construction industry is witnessing a rapid adoption of new technologies and innovations. Existing research highlights the positive impact ...

Digital Info Screen - A Visual Management Tool for Construction Workers

Abstract: The Info screen development is part of wider research project where automated data collection of site operations and processing the data for provision of role-specific and contextualized information to targeted professions to fulfil the predicted information needs are being studied. The specific objective of the research work reported in this ...

Assessing the Impact of AR-Assisted Warnings on Roadway Worker Stress Under Different Workload Conditions

Abstract: Recent data from the Federal Highway Administration highlights an alarming increase in fatal crashes in roadway work zones, underscoring the need for enhanced worker safety measures. This study addresses this concern by evaluating stress levels among roadway workers exposed to multi-sensory AR-assisted warnings during varying work intensities, using a high-fidelity ...

Use of robotics to coordinate health and safety on the construction site

Abstract: The construction industry has the highest number of accidents compared to other sectors of the economy. Minimising the risk of accidents requires compliance with safety standards and constant monitoring by re-sponsible persons. The use of robots for high-risk work can increase safety and prevent accidents on construction sites. On the ...

The Influence of an Immersive Multisensory Virtual Reality System with Integrated Thermal and Scent Devices on Individuals' Emotional Responses in an Evacuation Experiment

Abstract: Virtual reality (VR) technology has proven to be a valuable tool for exploring human behaviors during construction disasters. Enhancing VR systems with multisensory devices can amplify participants' immersive experiences and emotional response to emergency events. The potential of thermal and scent feedback to intensify negative emotions and immersion in virtual ...

Envisioning Extraterrestrial Construction and the Future Construction Workforce: A Collective Perspective

Abstract: Humanity’s evolution toward an interplanetary species poses a new frontier for the construction industry: extraterrestrial construction. With fast technological advancements in manufacturing and robotics, it is a matter of when, not if, before humans make perpetual habitats on nearby planetary bodies. We envision the emerging frontier of the construction industry ...

Guiding Visual Attention in Remote Operation: Meaning, Task and Object in Post-Disaster Scenarios

Abstract: In post-disaster scenarios where on-site operations are unfeasible, remote operation of robots or drones by human operators presents an effective and promising solution for survey and search-and-rescue missions. This method necessitates rapid processing of extensive visual data and allocating attention to multiple details of dynamic, complex, and perilous environments. Analysis ...

Conceptualizing Digital Twins in Construction Projects as Socio-Technical Systems

Abstract: Digital Twin (DT) has been proposed in the construction sector as the evolution of static Building Information Modeling (BIM) by enabling seamless data flow between physical and digital environments. This paper presents an integrated framework that conceptualizes DT in construction projects as a socio-technical system. This framework aims to ...

Coupled Risk Assessment of Construction Workers’ Unsafe Behaviors in Human-Robot Interactions

Abstract: Human-robot interaction (HRI) is expected to play an important role in the construction industry in the coming decades. However, construction workers face new safety challenges that stem from both external environmental risks and individual internal risks in the HRI environment. Therefore, this study aims to identify safety risk factors related ...

Enhancing Public Engagement in Sustainable Systems through Augmented Reality

Abstract: The sustainability of building infrastructure has been a growing critical global concern. However, stakeholders often overlook the sustainability aspect of systems in their everyday lives. This paper presents an exploration of the potential of augmented reality (AR) technology as a tool for enhancing public engagement around sustainable systems in buildings. ...

REBAPose -A Computer vision based Musculoskeletal Disorder Risk Assessment Framework

Abstract: Work-related Musculoskeletal Disorders (WMSDs) are one of the prominent challenges facing the construction industry, and their effective management requires a risk-quantification strategy. A comprehensive method to assess WMSDs for the construction sector is the Rapid Entire Body Assessment (REBA). The conventional risk-quantification frameworks relying on manual analysis of postures and ...

Enhancing Human-Robot Teaming in Construction through the Integration of Virtual Reality-Based Training in Human-Robot Collaboration.

Abstract: Human-robot teaming (HRT) has emerged as a pivotal research area in the construction industry, focusing on collaborative efforts between humans and robots for enhanced productivity and safety. This study delves into the dynamics of HRT within the immersive context of virtual reality (VR) learning environments. The research integrates established theories, ...

Enhancing Decision-Making for Human-Centered Construction Robotics: A Methodological Framework

Abstract: While the Architecture, Engineering, and Construction (AEC) industry is increasingly aware of the rising demands for productivity and human-centered construction improvements, the holistic adoption of robotics as a fundamental strategy to address these challenges has not yet reached comprehensive fruition. This paper therefore introduces a methodological framework aiming to address ...

An OpenBIM-based Framework for Lifecycle Management of Steel Reinforcement

Abstract: Reinforced concrete (RC) is commonly used in modern building construction. Steel reinforcement (or rebar) design and fabrication are important tasks for the construction of RC buildings. However, these processes are currently conducted semi-automatic, requiring large human effort and processing time. Besides, there is a lack of efficient approach for progress ...

A Digital Twin Based Approach to Control Overgrowth of Roadside Vegetation

Abstract: Roadside vegetation poses a significant risk to road safety, often contributing to traffic accidents by obstructing drivers' views and impeding visibility. This study investigates existing control methods, assesses their limitations, defines technology-agnostic information requirements for vegetation control, and proposes a Digital Twin-based solution. The methodology involves expert interviews, a literature ...

Bridging the Annotation Gap: Innovating Sewer Defects Detection with Weakly Supervised Object Localization

Abstract: Urban sewer systems are vital yet often neglected components of modern infrastructure system. Inspecting these systems is expensive due to labour costs and the need for manual examination by professionals. In addition to the challenges posed by traditional methods, developing deep-learning-based automatic defect detection models requires a vast number of ...

Integration of Construction Progress Monitoring Results using AI Image Recognition from Multiple Cameras onto a BIM

Abstract: This study merges artificial intelligence (AI) image recognition technology with Building Information Modeling (BIM), to develop a prototype system for the automation and visualization of construction site progress control. Our focus is the strategic deployment of multiple construction site surveillance cameras using a BIM model to encompass the entirety of ...

Toward shotcrete process simulation to support robotic operation

Abstract: In this study, we introduce a detailed physics-based particle system for simulation of the shotcrete process. The development of this framework concept is informed by an extensive literature review encompassing diverse modeling and simulation methodologies applied to shotcreting processes, coupled with insights derived from experimental studies on shotcrete. This method ...

A Framework of Integrating HBIM and GIS for Automated Fire Risk Assessment of Heritage Buildings

Abstract: Historic buildings face multi-faceted fire risks that threaten their conservation. A comprehensive fire risk assessment is essential to prevent fires and protect cultural heritage. Conventional practices rely on surveys and site visits, which are inefficient in capturing up-to-date information digitally and analyzing the risk levels quantitatively. This paper proposes a ...

Point Cloud-based Computer Vision Framework for Detecting Proximity of Trees to Power Distribution Lines

Abstract: The maintenance of power lines is challenged by the encroachment of vegetation, posing significant risks to the reliability and safety of power utilities. Traditional methods, based on manual inspection, are not only resource-intensive but also lack the necessary precision for effective and proactive maintenance. This paper aims to develop an ...

Reinforcement Learning for Smart Mobile Factory Operation in Linear Infrastructure projects

Abstract: Mobile factories promise an increased project efficiency with on-demand production and Just-in-Time delivery of prefabricated elements. However, traditional scheduling methods predominantly focus on either factory or site and neglect the factory mobility, often leading to suboptimal synchronization. To address this gap, this paper introduces a novel reinforcement learning (RL)-based model ...

Semantic annotation of images from outdoor construction sites

Abstract: Valuable information is embedded in construction images which can be used for different construction engineering and management purposes. The availability of low-cost cameras and robust artificial intelligence methods has increased the use of imaging technology in construction sites. However, these rich data sources are not often used to their full ...

Structural design in the era of digital twins. A case study

Abstract: Digital Twins (DT) represent a technology that provides a way to encompass useful information of built assets for the sake of productivity enhancement in the AECO sector. Its adoption in the industry is still at early developmental stages. Significant strides have been made in establishing frameworks and workflows for effective ...

Removal of Construction Machinery Occlusion using Image Segmentation and Inpainting for Automated Progress Tracking

Abstract: This study introduces an innovative method for enhancing digital modeling accuracy in construction site monitoring by integrating UAV imaging with advanced machine learning and computer vision algorithms. It focuses on removing temporary elements like construction machinery from images. The method involves two steps: first, using deep learning algorithms, for instance, ...

Accelerating Indoor Construction Progress Monitoring with Synthetic Data-Powered Deep Learning

Abstract: In recent years, there has been a growing interest in automated indoor construction progress monitoring (ICPM) to maximize precision and reduce human intervention. Computer vision approaches, especially based on deep learning (DL) methods, have shown great potential in this task. However, training DL models require large-scale datasets, which are often ...

Development of an immersive digital twin framework to support infrastructure management: a case study of bridge asset health monitoring

Abstract: Digital Twin (DT) has been widely adopted in construction and infrastructure projects to focus on the management and control of physical systems and assets responsively to meet the requirements of the users. When integrating immersion functions with the digital and wireless transformation models, the DT applications can further allow users ...

A Graph Neural Network Approach to Conceptual Cost Estimation

Abstract: Conceptual cost estimation plays an important role in construction projects since it is the basis for stakeholders to produce financial plans (e.g., establishing project budgets). The current practice, heavily dependent on cost engineers' subjective judgment and manual work, tends to be error-prone and labor-intensive. In response, this paper introduces a ...

BIM and IPA - Excerpt of an automated assessment system for an autodidactic teaching concept

Abstract: This article introduces an innovative approach to assessing and enhancing Building Information Modeling (BIM) skills using Digital Process Automation (DPA) and Robotic Process Automation (RPA). Aimed at university BIM courses, the study addresses the challenge of evaluating students' modelling proficiency. The autodidactic teaching concept utilizes a Bizagi-based work portal, offering ...

Evaluation of Mapping Computer Vision Segmentation from Reality Capture to Schedule Activities for Construction Monitoring in the Absence of Detailed BIM

Abstract: Over the past few years, research has focused on leveraging computer vision in construction progress monitoring, particularly in comparing construction photologs to Building Information Modeling (BIM), with or without schedule data. The practical application of these techniques and a large number of startups that have brought hyper AI and human-in-the-loop ...

From Unstructured Data to Knowledge Graphs: An Application for Compliance Checking Problem

Abstract: The rule requirements of a building code are frequently violated to create financially viable designs. These deviations are subjected to condonation by the municipal commissioner if recognizable hardships are faced. The historical concession applications for similar cases are stored in an unstructured manner, creating a barrier to knowledge transfer. The ...

Towards autonomous shotcrete construction: semantic 3D reconstruction for concrete deposition using stereo vision and deep learning

Abstract: The adoption of autonomous systems is a foreseeable necessity in the construction sector due to work hazards and labor shortages. This paper presents a semantic 3D understanding module that creates 3D models of construction sites with highlighted regions of interest for shotcrete application. The approach uses YOLOv8m-seg and SiamMask for ...

Digital Twin in Prefabricated Construction – Approaches, Challenges and Requirements

Abstract: Digital Twin (DT) is a virtual replica that mirrors physical objects, systems, or entities. In the construction sector, DTs play a crucial role in building management, optimizing energy usage, predicting maintenance, and enhancing building lifecycle management. Although effectively integrated into traditional construction practices, its application in the prefabricated construction (PC) ...

Exploring Digital Twin platforms across industries

Abstract: Digital Twins have emerged as a transformative solution enabling organizations across sectors to digitally replicate physical assets and processes to extract operational insights. Implementing Digital Twin systems involves diverse stakeholders, ranging from providers to end-user developers and adopters. At the crux of Digital Twin implementation lies the need of Digital ...

Underground Utility Network Completion based on Spatial Contextual Information of Ground Facilities and Utility Anchor Points using Graph Neural Networks

Abstract: Every year, accidental damage during excavation leads to numerous disruptions in utility services. These incidents cause not only financial losses but also injuries and fatalities. A major contributing factor is the lack of accurate location data for these utilities of such incidents. The current practice involves a time-consuming coordination process ...

Adaptive Geological Uncertainty Modeling in Excavation

Abstract: The accurate detection of soil boundary levels is vitally important for creating the correct solutions for the earthwork phases of construction. In Building Information Modeling (BIM), subsoil models are interpolated from information obtained from ground investigations. Our study focused on the adaptive use of geological uncertainty modeling to derive additional ...

Planning of Formwork Accessories in a BIM-based Aluminum Formwork Layout Planning System

Abstract: Formwork accessory planning plays an important role in fastening and supporting the formwork panels for construction safety. This research aims to improve the automation of formwork accessory planning of a BIM-based aluminum formwork layout planning system currently developed at the National Taiwan University for automating the layout planning of formwork ...

Exploring the Potential of Reinforcement Learning in Pipe Spool Scheduling in Industrial Projects

Abstract: Pipe spools are key components in industrial projects. Usually, they're built off-site in a fabrication shop, then shipped to the project location for installation. The fabrication shop deals with numerous spools, each tailored to specific requirements according to shop drawings. These specific requirements together with other factors, such as lead ...

Robust High-Precision LiDAR Localization in Construction Environments

Abstract: Accurate localization plays a crucial role in the effective operation of autonomous robotics systems, especially in dynamic environments such as construction sites. Simultaneous Localization and Mapping (SLAM) utilizing LiDAR sensors has emerged as a popular solution due to its ability to function without external infrastructure. However, existing algorithms exhibit significant ...

Automated Inspection Report Generation Using Multimodal Large Language Models and Set-of-Mark Prompting

Abstract: In the context of the increasing expansion and complexity of civil engineering projects, construction inspection plays a crucial role in ensuring project quality and safety. The traditional construction inspection report writing process mainly relies on the manual records of on-site inspectors. This process is not only time-consuming but also easily ...

Assisting in the identification of ergonomic risks for workers: a large vision-language model approach

Abstract: In the construction industry, due to workers frequently engaging in highly physically demanding tasks and using various tools, workers are often exposed to ergonomic risks and safety hazards. Various observation-based traditional or computer vision-based artificial intelligence methods have been applied in the field of construction to assess ergonomic risks. However, ...

Knowledge Graph-based Deconstruction Planning of Building’s Products

Abstract: The transition from a linear economy (take-make-dispose) to a circular economy in the construction industry (i.e., circularity in construction) necessitates adopting deconstruction instead of demolition. Deconstruction planning methods need to be investigated to facilitate this transition. Successful deconstruction planning requires considering various information to capture the destiny of the extracted ...

Development of Online Course for Open Infra Built Environment Information Model

Abstract: Infra Built Environment Information Modeling (infraBIM) enables efficient and accurate planning, construction, and maintenance of complex infrastructure systems. InfraBIM has spread worldwide and is used in various countries for infrastructure projects. InfraBIM experts are essential to take full advantage of the benefits of digital information modeling. The goal of the article ...

Integration of BIM and RFID-Sensing Technology for Automated Progress Monitoring in Modular Construction

Abstract: Modular construction represents a significant advancement in the architectural, engineering, and construction (AEC) domain, bolstering productivity by integrating factory-based manufacturing and efficient assembly techniques. This study presents a holistic approach, merging Building Information Modelling (BIM) with technological automation interoperability, to facilitate seamless prefabrication and automatic monitoring within modular construction projects. ...

Scan-to-BIM: Unlocking current limitations through Artificial Intelligence

Abstract: This paper discusses the current methods of Scan-to-BIM, a process which allows creating a digital representation of existing buildings for a planning methodology called Building Information Modeling (BIM). The study covers all stages of the process, from point cloud generation and pre-processing to BIM modeling and formatting. We review the ...

Assessing the Viability of Robotic Disassembly of Building Components for Resource Recovery

Abstract: The transition towards a circular economy will, in large part, necessitate the disassembly and recovery of components from existing building stock. Robotic disassembly has emerged as a technique in other (non-building) industries as a method for efficient and scalable resource recovery. Since robotic disassembly has yet to achieve a similar ...

Robotic platform for the (semi-) automated assembly of façade panels

Abstract: 48% of total energy consumption in Europe is used in buildings and homes. These are therefore accountable for 35% of Europe's total CO2 emissions. To solve this problem in a sustainable way, the building stock would have to be thermally refurbished further. Currently, the annual thermal refurbishment rate is only 1% ...

Automating the Tower Crane: Integrating the Development and Simulation of Path Planning and Trajectory Tracking of Tower Crane in ROS Framework

Abstract: In modern construction sites, tower cranes play a crucial role but often rely on multiple human operators. Despite the advancements of the Construction 4.0 era, a comprehensive framework for automated tower crane operations is currently lacking. This study proposes a framework that integrates a real-scaled construction site and tower crane ...

Development of Robotics for Building Exterior Inspection: A Literature Review

Abstract: The aging of buildings is a global concern, with potential risks to human safety and property. Building inspection and maintenance are crucial for ensuring structural integrity and safety. However, traditional manual methods are time-consuming and pose safety risks, especially for exterior inspection at height. Robotics offer a promising alternative to ...

Development of a Prototype Data-system Integration Platform for As-Built Inspection

Abstract: This study focuses on developing a data-system integration platform tailored for the construction phase. It employs application programming interfaces (APIs) and a range of sensor devices to enhance construction management practices. The platform is crafted to cater to various requirements while maintaining scalability, utilizing a microservice architecture to facilitate seamless ...

Preliminary Study on Enhancing Detection of Concrete Bridge Surface Spalling by Infrared Thermography

Abstract: Regular inspections, effective management, and timely maintenance are critical issues to ensure bridge safety and quality. Currently, visual inspection remains the predominant method employed worldwide for bridge inspection. However, visual inspection heavily relies on the training, experience, and subjective judgment of inspectors, leading to inconsistent assessments. When applying deep learning ...

NeRF-Con : Neural Radiance Fields for Automated Construction Progress Monitoring

Abstract: The monitoring of construction progress is crucial for ensuring project timelines, budget adherence, and quality control. Traditional methods often involve manual inspection, which is labor-intensive and prone to human error. We introduce NeRF-Con, an innovative approach utilizing Neural Radiance Fields (NeRF) to automate the process of construction progress monitoring. NeRF-Con ...

Identification of Factors and Metrics to Compare Vision Based Data Acquisition Devices

Abstract: Construction projects rely on several technologies for progress monitoring of projects. Among these technologies, Computer Vision (CV) based technologies are gaining popularity as they enable direct acquisition of physical site data. There are numerous devices available using vision-based technologies. Several studies have attempted to compare these technologies to identify appropriateness ...

Robotic IoT-Enabled 1D Line Scanner Integration for 3D Point Cloud Data Processing

Abstract: The integration of measurement systems and sensors is critical to advancing construction automation processes and aligning digital models with physical production realities. However, incorporating field measurement and inspection tools into digital fabrication is challenging due to the dynamic nature of construction sites. While point cloud sensors have been widely used ...

Virtual Construction Equipment Sensor for Determining Soil Stiffness during Compaction

Abstract: Processes on construction sites are characterized by a high proportion of manual work, rapid variability and harsh working conditions. As a result, the level of digitalization and automation as well as productivity is low. In the near future, digital assistance and documentation systems will be used to counteract these shortcomings. ...

Motives and Barriers for Offsite and Onsite Construction 3D Printing

Abstract: This study aims to compare between onsite and offsite construction 3D printing (C3DP). For this purpose, the Systematic Literature Review approach (SLR) was employed. The review which was based on studying 48 sources identified six categories to classify the motives and barriers for the two C3DP techniques; cost, transportation, design ...

BIM Model View Definition (MVD) for disassembly planning of buildings

Abstract: Buildings are responsible for a huge amount of negative environmental impacts at the End-of-Life (EoL) stage because of the massive global production of waste. Therefore, there is an urgent need for developing design systems to decrease waste generation by facilitating the reuse and recycling of building materials. Building Information Modeling ...

Digital Transformation, Sustainability and Construction 5.0

Abstract: The United Nations has set the 2030 Agenda for Sustainable Development for the society, the environment and the economy with the 17 Sustainable Development Goals (SDGs). Countries act in collaborative partnership to take transformative steps to shift industries and society onto a sustainable and resilient path. Among all, digital transformation ...

Predicting Indicators of Design Quality for Cast-in-Place Reinforced Concrete Structures Using Machine Learning

Abstract: This paper presents the application of the information contained in exchange standards to predict indicators of design quality for concrete-in-place reinforced concrete (CIP RC) structures early in the design process. A logistic regression model is applied to each node type of a frame structure: beam-column, slab-column, beam-slab, and beam-beam. All ...

A Generic 3D Printing Life Cycle Assessment (LCA) Framework for AEC Applications

Abstract: Amidst the increasing adoption of three-dimensional printing (3DP) in the architecture, engineering, and construction (AEC) industry, there exists a notable research gap concerning the quantification of its environmental impact. More importantly, there is a lack of a generic framework that can be employed for different material types and methods. Therefore, ...

Justification of Construction 4.0 maturity model with a case study of a data-driven façade company

Abstract: The European Parliament released the 2030 Digital Compass, identifying the construction sector as one of the five key ecosystems in the digital transformation process. A Construction 4.0 maturity model (C4M) was created to lead companies through their digital transformation journey. This research aimed to justify the model categories of the ...

Analogizing in Construction and Education Research: A Case Study

Abstract: This paper is inspired by the concept of Analogizing. It explores the analogies between a concept from the Construction industry (Automated Project Performance Control – APPC) and a concept in Education (Organizational Learning Analytics – OLA). The APPC model deals with automating data collection and conversion from on-site construction projects ...

Training and Generating Apartment Plan Graphic Images for Commercial Uses

Abstract: This paper introduces a methodology utilizing image generation AI to create 3D floor plan images for Korean-style apartments. The growing interest in spatial dynamics, driven by changes in residential preferences, has elevated the importance of widespread comprehension and the demand for floor plans. Specifically, apartment floor plans, crucial for commercial ...

Collaborative R&D and Mutual Utilization of Construction Robotics in the Construction RX Consortium

Abstract: The Construction RX Consortium was established to promote increased productivity and attractiveness of the Japanese construction industry as a whole. The Construction RX Consortium has established 12 subcommittees and stimulates various technology developments for mutual utilization. The automatic material delivery system subcommittee developed an automated transport system. The project is ...

UAV for sticking markers in the built environement

Abstract: UAVs have immense potential in construction applications. This paper gives a overview of a project that aims to expand the frontier of applications of UAVs from non-contact measurements to physically interact with buildings by sticking targets on the building. The goal of the project is to apply positioning tags onto ...

Analysis of openBIM Adoptions and Implementations: Global Perspectives and Canadian Industry Adoption

Abstract: The transition towards openBIM solutions has been receiving an increasing amount of attention in the built asset industry. This shift is principally driven by the adoption of open standards and services, aiming to promote a more collaborative, interoperable, and transparent digital workflow. This paper highlights openBIM adoption across various jurisdictions, ...

Evaluating Site Scanning Methods: An Assessment System for Quantitative Comparison and Selection

Abstract: With the rapid advancement of digitization, a multitude of tools for as-built modeling has emerged, posing a challenge in choosing the most suitable product. This article presents an evaluation system for identifying and selecting a site scanning method to create a digital twin of existing buildings. The evaluation criteria developed ...

Human-Robot Interaction in Sloping Jobsites (Demolition): Exploring Impact of Visual Interfaces

Abstract: In hazardous and uncertain sites, teleoperation is often utilized to execute scheduled procedures from a safe location. A visualization interface, which provides the remote operator with visual information to enhance spatial awareness, is essential to understand site information and receive feedback from the robot. To be effective, the interface must ...

Autonomous and Continuous As-is 3D Thermal Mapping for Construction Environments

Abstract: Thermal Point Clouds (TPCs) can provide valuable information during the inspection and assessment of the performance of buildings and for energy auditing; however, it faces two issues regarding data: scanning time and redundancy optimization. The use of continuous and discrete scanning paths can decrease collection times, and the automation of ...

Autonomous Excavator System for Construction Earth Moving

Abstract: Construction automation is vital for increasing efficiency, reducing costs, and enhancing safety in the industry. In this paper, we present our latest advancements in autonomous excavator systems (AES) specifically designed for earth moving operations in construction sites. Our proposed architecture integrates perception, planning, and control by merging multi-modal perception sensors ...

Automated Progress Monitoring in Modular Construction Factories Using Computer Vision and Building Information Modeling

Abstract: Modular construction methods have recently gained interest due to the advantages offered in terms of safety, quality, and productivity for projects. In this method, a significant portion of the construction is performed off-site in factories where modular components are built in different workstations, assembled on the production line, and shipped ...

BIM-based construction quality assessment using Graph Neural Networks

Abstract: Automated construction quality control and as-built verification often involve comparing 3D point clouds captured on-site with as-designed Building Information Models (ad-BIM) at the individual element level. However, signal noise and occlusions, common in data captured from cluttered job sites, can negatively affect the performance of these methods that overlook the ...

Discrete Event Simulation Based Approach for Tracking Performance of Segmental Production at Precast Yard

Abstract: Efficient performance tracking and monitoring systems can facilitate timely decision-making by management. However, cycle time, which is commonly employed as a monitoring system in segmental production sites, can be time-consuming and only allows for the identification of inefficiencies, rather than supporting decision-making. In this context, operational management concepts with broad ...

Identifying key parameters for BIM-based disassembly planning

Abstract: Reuse of building systems and components has the potential of taking full advantage of the residual utility of building materials. In this matter, disassembly planning plays a critical role for retrieving reusable components in an optimized way. Unfortunately, the implementation of disassembly planning for buildings, at a component level, is ...

Building insulation renovation: a process and a software to assist panel layout design, a part of the ISOBIM project.

Abstract: In order to lower the huge carbon dioxide emissions due to building heating, the goal of this communication is to show how the design of insulation panel layout can be strongly computer-aided during façade building energy renovation projects. The work has been achieved during an applied collaborative research project (ISOBIM), whose ...

How Can ChatGPT Help in Automated Building Code Compliance Checking?

Abstract: One main challenge in the full automation of building code compliance checking is in the extraction and transformation of building code requirements into computable representations. Semantic rule-based approach has been taken mainly due to its expected better performance than machine learning-based approach on this particular task. With the recent advancement ...

Optical Process Control for extrusion-based Additive Manufacturing methods in construction

Abstract: Additive Manufacturing (AM) provides many advantages when applied to the field of construction. However, due to the large scale of construction projects, time requirements for the printing process are also large, making AM processes susceptible to the influence of external variables. Accordingly, it is advisable to employ methods that can ...

RTDE robot control integration for Fabrication Information Modeling

Abstract: In response to its stagnating productivity and growing demand for sustainability, the architecture, engineering, and construction (AEC) industry is increasingly pushing ahead regarding digitization and automation. Building Information Modeling (BIM) and Additive Manufacturing (AM) are two technologies that contribute significantly to this development. Although these technologies have similar basic principles ...

Low-light Image Enhancement for Construction Robot Simultaneous Localization and Mapping

Abstract: Visual Simultaneous Localization and Mapping (V-SLAM) is commonly employed as a method in construction robots due to its efficient and cost-effective nature for information acquisition. However, detection and positioning using V-SLAM face significant challenges in low-light construction scenes, such as underground garages or dim indoor locations, where detecting enough valid ...

Quantified Productivity Evaluation of Autonomous Excavation Systems using a Simulation Approach

Abstract: Autonomous excavation systems are currently being developed to help address issues of poor productivity, by automating the excavation process and reducing manpower onsite. However, the impact of automation on the productivity of the excavation process remains to be determined. This paper uses a simulation approach to study this question. A ...

Prototypical digital twin of multi-rotor UAV control and trajectory following

Abstract: This paper presents the development of a prototypical digital twin package for multi-rotor aerial vehicle(MAV) systems, with potential application for monitoring a construction site. The focus is how to create a virtual representation of an actual surveillance system that can be updated from real-time data to effectively help with its ...

Development and evaluation of a low-cost passive wearable exoskeleton system for improving safety and health performance of construction workers: A pilot study

Abstract: Construction workers have an increased risk of having muscle fatigue and musculoskeletal injuries, among other non-fatal workplace injuries. As a result, this project aimed to develop and evaluate a low-cost passive wearable exoskeleton system for improving construction workers' safety and health performance, mainly by mitigating the risk of developing musculoskeletal ...

Automated construction process for foundation engineering

Abstract: The purpose of this manuscript is to outline a scientific task aimed at improving the technological and organizational methods for pressing piles into the ground. The study proposes the development of conceptual piling equipment and construction methods for various structural and technological solutions for pile fields, especially under complicated conditions. ...

Bulldozer sensing technique for the purpose of automation for bulldozer's workflow

Abstract: Recently, global positioning systems - GLONASS and GPS are increasingly used for road construction machines. Often, mobile stations installed on the construction site are used, which increase positioning accuracy, but have a limited range. Providing a signal source to every running machine is very costly. Taking into account the often ...

Proposal of an Open Platform for Autonomous Construction Machinery Development

Abstract: We are currently experiencing a shortage of skilled labor in the construction industry, thus it is imperative to improve productivity at construction sites. One of the most effective ways to address this issue is through the implementation of autonomy. Machine control systems have been utilized for heavy equipment for over a ...

Proof-of-concept for a reliable common data environment utilizing blockchain and smart contracts for supply-chain of public civil works

Abstract: To rationalize and automate public civil engineering works, it is crucial to directly utilize the information produced by the contractor for quality/ as-built inspection, and progress measurement. In this study, a highly reliable common data environment that utilizes blockchain and smart contracts to ensure tamper resistance and traceability of construction ...

An Extensible Construction Ontology to Guide Job-Site Sensing and Support Information Management

Abstract: Real-time sensing data and continuously updated project documents pose challenges to project managers who need to analyze these data and documents to derive meaningful information necessary for decision-making. To collect and incorporate heterogeneous data both from offsite and onsite sources, the authors: (1) developed a construction tasks, resources, and techniques ...

Impact of Reinforcement Design on Rebar Productivity

Abstract: Scheduling is an essential part of project management, and many processes like procurement, fabrication, and resource mobilization are based on these schedules. If the actual targets lag from the pre-planned schedules, waste is generated in the form of idle inventory. It also results in an increased workload on man and ...

Prospects of Integrating BIM and NLP for Automatic Construction Schedule Management

Abstract: In construction, project schedules are still created and updated manually, which takes time, causes errors, and leads to poor planning and scheduling, one of the main reasons for project delays today. Consequently, overcoming these challenges requires an automated schedule management method that extracts information and knowledge from existing and previous ...

Design based Constraint Handling for Site Layout Planning

Abstract: Site layout planning (SLP) constraints are handled heuristically or through a mathematical approach, as presented in the SLP literature. The real-life constraints of SLP are modelled as mathematical equations and are attempted to be handled through optimisation models. It is observed that the existing mathematical SLP models handle a limited ...

Digital Twin Framework for Worker Safety using RFID Technology

Abstract: Construction 4.0 and Digital Twin are the emerging concepts of the digital era in the Construction Sector. The crux of these digital technologies lies in capturing the rich "real physical" data to model the "virtual" structure to enable the experiments for specific decision-making. Although protocols for the hazardous operations had ...

Assessment of Financial Risk Parameters Associated with Public-Private Partnership Port Projects in India

Abstract: In developing countries infrastructure investment is increased in last few decades. Public private partnership plays important role in low- and middle-income countries for providing finance. 95% of India international trade is transport through port sector. Hence it is big infrastructural project for India to connect with other countries. Public private ...

From Lab to Field: A Sociotechnical Systems View of the Organisational Cycle for Intelligent Robotics Technologies Ideation, Planning, Design, Development and Deployment

Abstract: Advanced intelligent robotics technologies like autonomous and collaborative robots in construction sites have been explored in the literature for more than a decade. However, there are only a few prototypes that successfully make it to the field due to various reasons. There is burgeoning interest in the design, development and ...

Digital Twin Approach for the Ergonomic Evaluation of Vertical Formwork Operations in Construction

Abstract: Construction formwork activities are physically demanding and repetitive, increasing the risk of work-related musculoskeletal disorders. This study proposed a digital twin approach to evaluate the ergonomic risks associated with vertical formwork operations using steel formwork systems in Indian construction projects. The on-site observation captured the workers' postures, allowing for more ...

Impact of Crew Diversity on Worker Information Access and Performance

Abstract: Labor shortage has consistently been a challenge in the construction industry for decades. As a data-heavy industry, information access and technological innovations are critical for pique performance. Currently, the industry is witnessing a global trend of workforce diversity, as industry leaders are emphasizing its importance. Research shows that gender and ...

Understanding BIM through a Simulation Game - Case study of Indian Students subjected to this course

Abstract: Design Hub India and Jade University of Applied Sciences conducted a simulation game in Bangalore, India to teach the networked and digital planning methodology Building Information Modelling (BIM). The teaching format was developed in Germany and has already been implemented and field-tested in teaching. At this event, the format was ...

Towards interfacing human centered design processes with the AEC industry by leveraging BIM-based planning methodologies

Abstract: Digital workflows in the Architecture, Engineering and Construction (AEC) industry have been working with a wide range of software solutions trying to enable a Design-to-Production (DtP) end-to-end data flow. Thereby, state-of-the-art software solutions attempt to streamline the design and production processes accordingly. However, most digital workflows lack in terms of adequate ...

An Integrated Approach for Automated Acquisition of Bridge Data and Deficiency Evaluation

Abstract: Bridges are essential components of civil infrastructures that enable joining highways and cities, as well as facilitating movement between different geographical locations. Deterioration of bridges can pose a threat to public safety and hinder economic activities. The development of innovative and reliable asset management tools to support the optimization of ...

BIM-GIS integration and crowd simulation for fire emergency management in a large diffused university

Abstract: The integration of BIM (Building Information Modeling) and GIS (Geographic Information System) is promising to develop Asset Management Systems (AMS) for complex systems such as university assets. The potential lies in the ability to connect and contextualize data from several domains and at different scales, considering the relationship between buildings ...

Development of a BIM-based spatial conflict simulator for detecting dust hazards

Abstract: In construction management, a spatial conflict between two activities is generally identified as the intersection between related workspaces. Such assumption works well for detecting the majority of conflicts. Nevertheless, in certain dynamic scenarios, a spatial interference between two activities may occur even if the related workspaces do not intersect each ...

Indoor Defect Region Identification Using an Omnidirectional Camera and Building Information Modeling

Abstract: An omnidirectional (i.e., 360°) camera is an efficient device that can capture the status of a room with a single shot. To detect objects in a spherical image captured by a 360° camera, the image should be flattened and divided into patches reflecting normal fields of view (NFoV). However, detecting ...

Subword Tokenization of Noisy Housing Defect Complaints for Named Entity Recognition

Abstract: In domain-specific named entity recognition (NER), the out-of-vocabulary (OOV) problem arises due to linguistic features and rare vocabulary. OOV problem is particularly challenging in agglutinative languages such as Korean. The irregular decomposition of morphemes makes it difficult to represent all of them in language model dictionaries, resulting in poor NER ...

A Framework of Reconstructing Piping Systems on Class-imbalanced 3D Point Cloud Data from Construction Sites

Abstract: In construction environments, modifications to the dimensions, positioning, and trajectory of plumbing infrastructure within edifices are frequently necessitated by on-site conditions and pragmatic installation procedures. Recent advancements in Scan-to-BIM technology have streamlined pipe construction processes by monitoring development through a 3D model. However, existing 3D point cloud processing methods rely ...

Information Modelling Guidelines for the Mining Sector

Abstract: Mining is rapidly digitalizing and big data surrounds mines in their everyday activities and processes. Building Information Modelling (BIM) has long since taken an indispensable role in the design and management of buildings and infrastructures and is currently widely used as a standard for information management. Based on the results ...

Restructuring Elements in IFC Topology through Semantic Enrichment: A Case of Automated Compliance Checking

Abstract: The current trends exhibit that the construction industry is focusing on implementing the Building Information Model (BIM) to improve visual analyses, cost estimation, and information exchange. Though standards, requirements, and development control rules (DCR) govern the construction project lifecycle, only a few applications have been developed to investigate BIM's capability ...

Towards Automation in Steel Construction: Development of an OWL Extension for the DSTV-NC Standard

Abstract: The automation of steel construction requires new possibilities to link process data, measured deviations and tolerances. Our current research in robotic steel fabrication aims to address this challenge by developing an adaptive information model interface that can seamlessly integrate the cross-process considerations necessary for precise and efficient fabrication. The objective ...

Digital twins of bridges: notions towards a practical digital twinning framework

Abstract: Digital twins, the virtual counterparts of objects throughout their life cycle, are a crucial component of ongoing digitization. While the civil engineering community has already recognized the advantages of utilizing digital twinning, there is still a lack of comprehensive research in the field, resulting in uncertainties. This article proposes a ...

Online Safety Risk Management for Underground Mining and Construction Based on IoT and Bayesian Networks

Abstract: Management of environmental hazards in underground mining and construction sites has always been a challenging task for project managers and site engineers. Poor ventilation, the production of hazardous gases, dust, and considerable heat and humidity are some of the inherent characteristics of these ecosystems. Most conventional underground risk management methods ...

Microservice-Based Middleware for a Digital Twin of Equipment-Intensive Construction Processes

Abstract: Following the example set by Industry 4.0, digitization is being proven as a vital tool in equipment-intensive construction processes. Telematics data from equipment is sent to platforms. The profitable use of this data is part of today's research regarding digital twins. This paper shows the conformity to Industry 4.0 terminology ...

BIM-SLAM: Integrating BIM Models in Multi-session SLAM for Lifelong Mapping using 3D LiDAR

Abstract: While 3D Light Detection and Ranging (LiDAR) sensor technology is becoming more advanced and cheaper every day, the growth of digitalization in the Architecture, Engineering and Construction (AEC) industry contributes to the fact that 3D building information models (BIM models) are now available for a large part of the built ...

A review of Computer Vision-Based Techniques for Construction Progress Monitoring

Abstract: Monitoring the progress of construction operations on site is crucial to keep an up-to-date schedule. In the past, manual methods were used for that purpose, which lead to errors and delays in generating up-to-date schedules. Current practices and research lines have been studying different methodologies to reach a fully automated ...

A corpus database for cybersecurity topic modeling in the construction industry

Abstract: In the digitalized era of Construction 4.0, ensuring the confidentiality, availability, and integrity of digital assets through cybersecurity is crucial for the construction industry. Although more than 75% of respondents from a Forrester survey who are in the construction, engineering, and infrastructure industries reported to have experienced a cyber-incident in ...

Lessons Learned from 'Scan to BIM' for Large Renovation Projects by the U.S. Army Corps of Engineers

Abstract: The U.S. Army Corps of Engineers (USACE) Savannah District recently invested in the adoption of a process of transferring 3D Light Detection and Ranging (LiDAR) scan data into a Building Information Model (BIM), a process commonly known as Scan to BIM. This research explores the challenges and benefits of adopting ...

Lessons Learned from the "Hack My Robot" Competition and Considerations for Construction Applications

Abstract: The construction industry is going through a digital transformation where automation and robotics are slowly making their way into construction projects. This change brings numerous benefits, such as cost and time efficiency and higher accuracy and quality. At the same time, it raises cybersecurity concerns. Since most construction environments are ...

HLE-SLAM: SLAM for overexposed construction environment

Abstract: Robustness to overexposure conditions poses a significant challenge in the visual simultaneous localization and mapping (V-SLAM) of construction robots. Limitations in sensor exposure lead to the loss of information, making it difficult to track enough feature points for construction robots under overexposure conditions, owing to the assumption of constant brightness ...

BIM Implementation Strategy- A proposal for KMRL

Abstract: The implementation of Building Information Modelling (BIM) is a widely adopted pattern of revolution in the construction sector and the results gained through BIM adoption in multidisciplinary projects are well pronounced. Even though BIM is a widely accepted technique, its adoption in Kerala, especially for Kerala government projects is rare. Kochi ...

Exploring the Digital Thread of Construction Projects

Abstract: The construction industry is one of the most information-intensive industries where the success of projects depends on information being accurate, complete, timely, readily available, and understandable by different recipients. As projects become complex and processes become more digitized, the value of capturing, tracking, accessing, and sharing lifecycle-spanning data becomes critical ...

The impact of the combined innovations at the Hungarian National Athletics Stadium steel roof structure construction

Abstract: The aim of the research is to discover the interrelation between Construction 4.0 technologies and Sustainable development Goals (SDG) in a complex project. The construction of the National Athletic Stadium in Hungary of the 25.000m2 steel and cable membrane roofing structure demanded special innovations due to its uniqueness and its ...

Generative Design for Prefabricated Structures using BIM and IoT applications - Approaches and Requirements

Abstract: Building Information Modeling (BIM) has demonstrated a wide range of merits over traditional and modern constructions. The integration of generative design (GD) with BIM in the construction industry has become an interesting topic, even though the concept is not very new. Prefabricated construction (PC) offers several advantages over traditional construction ...

LeanAI: A method for AEC practitioners to effectively plan AI implementations

Abstract: Recent developments in Artificial Intelligence (AI) provide unprecedented automation opportunities in the Architecture, Engineering, and Construction (AEC) industry. However, despite the enthusiasm regarding the use of AI, 85% of current big data projects fail. One of the main reasons for AI project failures in the AEC industry is the disconnect ...

Using BIM to Facilitate Generative Target Value Design for Energy Efficient Buildings

Abstract: Buildings are one of the major energy consumers and the biggest producers of greenhouse gases, accounting for close to half of all energy emissions in construction industry. Construction stakeholders have been increasingly focusing on the broad idea of sustainable building design and construction technologies. The goal of sustainable design extends ...

Hardware/Software solutions for an efficient thermal scanning mobile robot

Abstract: The use of robotic platforms greatly facilitates the reconstructions of 3D models of buildings and automates tasks that would be tiring and inaccurate when carried out manually. In the specific area of thermal monitoring of buildings, robots can also develop an important role providing dense temperature information of envelopes and ...

3D Printing: An opportunity for the sustainable development of building construction

Abstract: Traditional construction processes have certain shortcomings, due to the waste generated, the quality, safety, and environmental problems, etc. In this sense, certain technological innovations are presented as an acceptable alternative in a country to improve these construction processes. One of them is 3D concrete printing, which requires a printer that ...

Integrating Building Information Modeling, Deep Learning, and Web Map Service for Sustainable Post-Disaster Building Recovery Planning

Abstract: Building recovery is always a major issue after disasters due to the urgent need for efficient assessment of damaged buildings and effective management of required resources. At the same time, it is necessary that building recovery planning considers the impact of used materials on the environment as well as the ...

Life cycle-oriented decision making based on data-driven building models

Abstract: The integration of BIM and sustainability is a key success criterion for sustainable planning, construction and operation and maintenance. Actually, various research is conducted to integrate the economic, environmental and social aspects in the BIM method. Especially, Life Cycle Assessment (LCA) and Life Cycle Costing (LCC) are subjects of research. ...

State of the art Technologies that Facilitate Transition of Built Environment into Circular Economy

Abstract: The construction industry is highly energy intensive and causes significant environmental impacts and reduction in natural resources. A radical change in current practices is necessary for achieving a circular economy in the construction sector. Structural holes in the supply chain, coordination of diverse stakeholders, and resource management at the end ...

A review on the Smartwatches as IoT Edge Devices: Assessing the end-users continuous usage intention using structural equation modelling

Abstract: The goal of this study is to identify people's intentions to use smartwatches and how their use of these devices is affected by the advantages and disadvantages of the IoT. For the research work, five cities were chosen, Delhi, Mumbai, Kolkata, and Chennai. These cities were chosen as a study ...

Vision-based Automated Flagging System in Construction

Abstract: Flaggers are a high-risk profession. They are always required to work closely with the open traffic lanes. Any distracted, speeding or intoxicated drivers might hit them, leading to their injuries and fatalities. From 1980 to 1992, a total of 54 fatalities involving flaggers in the construction industry have been reported. ...

TeleLayering: Teleoperated Construction 3D Printing Using Multimodal Feedback for Extraterrestrial and Terrestrial Construction

Abstract: In this paper, we propose a teleoperatedconstruction 3D printing technology, called TeleLayering, forplanetary and terrestrial applications. The TeleLayeringtechnology is enabled by effective multimodal control andmonitoring systems and enhanced construction 3D printingrobots to build or repair a variety of structures in extremeenvironments without the need for human presence on thejobsite. This ...

A Computational Framework For Robotic Quality Assessment and Management In Construction

Abstract: As an integrated process in construction projects,quality assessment and management (QA&M) can be importantto prevent failures during construction. The existing QA&Mpractice such as the evaluation of the geometric tolerance andsurface qualities is mostly performed manually which can belabor-intensive and tedious. This study proposes a computationalframework for a robot to perform ...

Front matter and table of contents

Abstract: The International Association for Automation and Robotics in Construction (IAARC) and the 39th ISARC organizing committee are pleased to present the Proceedings of the 39th International Symposium on Automation and Robotics in Construction held, in a hybrid mode, on July 13-15, 2022, at Universidad de los Andes, Bogotá, Colombia. The ...

A framework for a comprehensive mobile data acquisition setting for the assessment of Urban Heat Island phenomenon

Abstract: The debates around the Urban Heat Island phenomenon (UHI) have gained momentum in the context of smart cities and sustainable development. It is crucial to understand the complex interaction between urban features and temperature variation in the city based on reliable and detailed data. Yet, the complex interaction between the ...

Building Information Model Pre-Processing for Automated Geometric Quality Control

Abstract: Geometric quality control (QC) in a construction project is an important but time-consuming and not value-adding task. While significant progress is being made in construc-tion digitalisation, geometric QC processes remain highly manual and inefficient. This manuscript proposes a new methodology to pre-process initial information contained in the as-designed Building Information ...

Predictive Maintenance Optimization Framework for Pavement Management

Abstract: The preservation of highway infrastructure is essential for maintaining its capacity, safety, and efficiency for commerce and defense. Pavements are among the most important elements of highway systems that deteriorate over time. Hence, the goal of pavement asset management is to seek efficient investments where the methods applied will aid ...

Weakly supervised pseudo label generation for construction vehicle segmentation

Abstract: Segmentation tasks in computer vision have been adopted in various studies in the civil engineering domain to provide accurate object locations in images. However, preparing an-notation to train segmentation models is a time consuming and costly process, which hinders the use of segmentation models in vision-based applications. To address the ...

Teaching Construction Robotics for Higher Education Students: "Imagine and Make"

Abstract: The use of robotics in construction projects is still in its infancy despite the opportunities that robots can present to the improvement of construction practices. One of the strategies to effectively increase the reliance on robots in construction is increasing the knowledge and improving the educational programs about robotics for ...

Towards BIM-based robot localization: a real-world case study

Abstract: Conventional mobile robots rely on pre-built point cloud maps for online localization. These map points are generally built using specialized mapping techniques, which involve high labor and computational costs. While in the archi-tectural, engineering and construction (AEC) industry, as-planned building information modelings (BIM) are available for management and operation. In ...

Cluster-based Deterioration Prediction of Composite Pavements with Incorporation of Flooding

Abstract: Natural disasters lead to severe deterioration of valuable highway assets, including pavements that should quickly return to service after extreme events such as flooding. Various prediction models were developed to predict pavement performance for several purposes, including maintenance management, budget allocation, and investment strategy. However, limited studies focused on developing ...

Predicting construction productivity with machine learning approaches

Abstract: Machine learning (ML) is a purpose technology already starting to transform the global economy and has the potential to transform the construction industry with the use of data-driven solutions to improve the way projects are delivered. Unrealistic productivity predictions cause increased delivery cost and time. This study shows the application ...

A Systematic Classification and Evaluation of Automated Progress Monitoring Technologies in Construction

Abstract: Progress monitoring is one of the essential tasks while executing a construction project. Effective monitoring will lead to an accurate and timely analysis of the project's progress which is required to make vital decisions for project control. On the other hand, inefficient and delayed updates regarding the project's progress, which ...

Innovative Model for Forecasting Trailer Usage for Prefabricated Exterior Wall Panels

Abstract: With growing demand for large scale exterior envelope prefabrication solutions beyond precast concrete, Engineer-to-Order (ETO) prefabrication firms must develop reliable methodologies to manage finish goods inventory of large components. The imbalance between fabrication time and installation requires ETOs to forecast likely consumption of transportation resources at the proposal stage with ...

Automated Wall Detection in 2D CAD Drawings to Create Digital 3D Models

Abstract: Generating digital 3D buildings models from scratch is time consuming and labor intensive. In this paper, we present an automated detection process leveraging computer vision and the information available in 2D drawings to reduce 3D modeling time. The recognition system is limited to walls and has two parts: (1) Image ...

IFC-based Information Extraction and Analysis of HVAC Objects to Support Building Energy Modeling

Abstract: The heating, ventilation, and air conditioning (HVAC) system is a highly complex part of a building that requires high specialty and expertise to understand and analyze for energy modelling and simulation purposes. Significant manual effort is needed for information extraction from the mechanical designs, to support the creation of an ...

Systematic Literature Review of Building Information Modelling and Green Building Certification Systems

Abstract: The rapid pace of technological transformation in sustainability assessment in the construction industry has directed the development of tools and policies. Building information modelling (BIM)-based documentation processes for green building certification systems (GBCS) credits continually require re-assessments. The relationship between BIM and GBCS is minimal in the current literature, which ...

Information Extraction from Text Documents for the Semantic Enrichment of Building Information Models of Bridges

Abstract: The majority of innovative approaches in the realm of the retrospective generation of building information models for existing structures deal with geometry extraction from point clouds or engineering drawings. However, many building-specific or object-specific attributes for the enrichment of building models cannot be inferred from these geometric and visual data ...

BIM-Integration of Light Construction Equipment

Abstract: BIM (Building Information Modeling) has become increasingly important in recent years. At the center of BIM is the digital information model of a building. While such information models are already used intensively in building construction for small-scale robotic applications, digital models are only used for large-scale measures and machines in ...

Visualisation and graph-based storage of customised changes in early design phases

Abstract: Building Information Modeling (BIM) was conceived as a working method for networked planning using software assistance. Multiple stakeholders in the construction industry are involved in the design and management of digital representations of the physical and functional characteristics of a facility in the BIM model. Design variant management coupled ...

Conceptual Modeling of Lifecycle Digital Twin Architecture for Bridges: A Data Structure Approach

Abstract: The concept of Digital Twin (DT) has emerged in recent years to facilitate the use of Building Information Modeling during the entire projects' lifecycle. In the DT concept, cyber-physical system theory is utilized to collect condition data about an existing asset and then integrate this data into the digital model. ...

Closing the Gap Between Concrete Maturity Monitoring and Nonlinear Time-dependent FEM Analysis through a Digital Twin. Case Study: Post-tensioned Concrete Slab of an Office Building, Barcelona, Spain

Abstract: This paper proposes a pipeline for the automation of data between two realms: i) simulation, in a fully nonlinear, and time-dependent structural analysis model and, ii)concrete maturity monitoring data from the construction site. The connection enables an information construct understood for its use within the Digital Twin of the ...

ColombiaClass: proposal for a BIM Classification System for public buildings in Colombia

Abstract: The use of standardized BIM Classification Systems helps to improve the efficiency of the tendering, planning, and control of construction projects. The Colombian government has identified BIM as a key strategy to help increase the construction industry's productivity and improve value for money in public works projects. At the core ...

Towards Automated Pipelines for Processing Load Test Data on a HS Railway Bridge in Spain using a Digital Twin

Abstract: This document presents an automated pipeline to process sensor-based data produced during load tests on digitally twinned HS railway bridges. The research is developed within the frame of the H2020 European project ASHVIN, related to Assistants for Healthy, Safe, and Productive Virtual Construction, Design, Operation & Maintenance using Digital ...

Potentials of 5D BIM with Blockchain-enabled Smart Contracts for Expediting Cash Flow in Construction Projects

Abstract: The low level of digitization in sharing information and the fragmented processes in the construction supply chain negatively affects cash flow across the supply chain, resulting in non- and late-payment issues. Even though a cloud-based 5D BIM platform and Blockchain-enabled smart contracts have the potential to address the issues, their ...

Integrating Digital Twins in Construction Education Through Hands-on Experiential Learning

Abstract: This paper examines the value of including digital twin technology as a hands-on learning activity in a graduate-level building construction course. The methodology of teaching digital twins as a unit is presented, and the benefits of introducing this topic are examined within the framework of several learning objectives. The campus ...

Benefits of Open Infra BIM - Finland Experience

Abstract: The achieved benefits of Open Infrastructure BIM in Finland have been studied. The newest concept of Open InfraBIM in Finland is introduced. Industrial experiences and observed remarkable benefits in three large-size infrastructure design and construction projects carried out in 2012-2022 are presented and evaluated. Based on the observations and achieved ...

Vulnerability Assessment of Construction Equipment: An Example for an Autonomous Site Monitoring System

Abstract: The digital transformation of the construction industry is accelerating with the advances in information technology (IT) and operational technology (OT) and their convergence. While the benefits of such transformation in construction are apparent, cybersecurity aspects are usually overlooked. Cyber-attacks against project information can cause the exposure of confidential project data, ...

Fire Evacuation and Management Model Based on Building Information Modeling and Virtual Reality

Abstract: Fire management is a key aspect of building management. During a fire, the primary reason why evacuees cannot evacuate in time and causalities occur is their lack of familiarity with the evacuation route. In practice, two dimensional images or videos are used as aids for firefighting educational training. However, they ...

Automated Recognition of Hand Gestures for Crane Rigging using Data Gloves in Virtual Reality

Abstract: Construction safety training through Virtual Reality (VR) environments offers workers an interactive and immersive experience. Many complex interactions and realistic scenarios are possible in VR using accessories such as data gloves and trackers which allow data recording on incidents. For example, misinterpretation of hand signals construction workers give during operations ...

Wearable Technology for Highway Maintenance and Operation Safety: A Survey of Workers' Perception and Preferences

Abstract: Securing the safety of highway work zones is one of the most pressing issues in the highway maintenance and oper-ation community. Recent studies have indicated that high-way workers keep suffering from fatal injuries and death caused by traffic, long-night shifts, and limited space for ma-neuvering. In the meantime, recent advances ...

Requirements analysis of additive manufacturing for concrete printing - A systematic review

Abstract: The acceptance of concrete printing as a viable construction method is limited because of a lack of expertise and due to the heterogeneous and non-standardized nature of additive manufacturing (AM) data modeling, affecting the reliability and the interoperability of the concrete printing process. To advance standardization of AM data modeling ...

Stag hunt game-based approach for cooperative UAVs

Abstract: Unmanned aerial vehicles (UAVs) are being employed in many areas such as photography, emergency, entertainment, defence, agriculture, forestry, mining and construction. Over the last decade, UAV technology has found applications in nu-merous construction project phases, ranging from site map-ping, progress monitoring, building inspection, damage as-sessments, and material delivery. While extensive ...

Reinforcement learning with construction robots: A review of research areas, challenges and opportunities

Abstract: The interest in the use of robots in the construction industry has been around for several decades; however, the advancement of technology for related applications has been slow. Considering that most construction robots are not fully automated and require extra guidance and instructions from the operators, an autonomous way for ...

Constrained Control Scheme for the Manipulation of Heavy Pre-fabricated Elements with Lightweight Robotic Arm

Abstract: Building activities involving heavy suspended elements are one of the construction activities with the highest level of danger. Typically, during these activities, one or two masons work in conjunction with a machine such as a crane or a lift-ing machine. Several robotics solutions have been proposed to replace the masons ...

Importance of a 5G Network for Construction Sites: Limitation of WLAN in 3D Sensing Applications

Abstract: Teleoperated construction machinery dominates construction sites, as it can, with relatively little effort, prevent operators from working in dangerous conditions by keeping them in the control loop. However, the operators usually have to execute tasks with limited situational information due to poor depth perception from 2D camera images, reducing local ...

Path Generation for Foam Additive Manufacturing of Large Parts with a Cable-Driven Parallel Robot

Abstract: In this paper, a framework for foam printing with a Cable-Driven Parallel Robot (CDPR) is described for building large parts. Compared with the traditional robotic systems, CD-PRs have a large workspace that can include the printing area. In addition, the potential reconfigurability of CDPRs is an asset to get rid ...

Automated material selection based on detected construction progress

Abstract: One of the many ways in which automation may help the construction industry is on-site material management. This paper presents an automated process where materials are selected for staging by detecting construction progress from site images. The materials are then delivered to their re-spective workface locations by a robot. The ...

Subjective Evaluation of Passive Back-Support Wearable Robot for Simulated Rebar Work

Abstract: Work-related musculoskeletal disorders continue to be a severe problem in the construction industry. Rebar workers are exposed to ergonomic risks such as repetitive stooping and forward bending resulting in low back injuries. Wearable systems such as back support exoskeletons are emerging as potential solution to reducing the risk of low ...

Development of Framework for Highway Lawn Condition Monitoring using UAV Images

Abstract: Planning, monitoring, and maintenance of highway assets is an essential, long-term operation for successful civil infrastructure management. These monitoring and maintenance activities are usually carried out manually, suffering from time-consuming, costly, potentially dangerous tasks. The advancements in Unmanned Aerial Vehicles (UAVs) and computer vision technologies have demonstrated the potential to ...

YAKE-Guided LDA approach for automatic classification of construction safety reports

Abstract: Identifying efficient processes for classifying text-based safety reports using Machine-Learning (ML) is an essential area of research. However, much of the previous work on the topic relies on supervised learning approaches, which are often manually intensive and require large volumes of pre-labeled data. To achieve reduced requirements for human intervention ...

Automated Construction Contract Summarization Using Natural Language Processing and Deep Learning

Abstract: The interpretation of construction contracts is crucial to the management and success of a project. Correct and accurate interpretation could support the smooth construction of high-quality built assets. Misunderstanding and omissions may lead to costly rework and delay. One main challenge of construction contract interpretation lies in the length of ...

Construction Progress Monitoring and Reporting using Digital Images and Computer Vision Techniques - A Review

Abstract: In complex and dynamic construction sites, efficient progress monitoring and reporting play an important role in preventing schedule delays and cost overruns. Such reporting requires detailed and accurate records from job sites to help project managers in comparing project's current state to its as-planned state for enabling timely corrective actions. ...

BIM, Twin and Between: a Conceptual Engineering Approach to Formalize Digital Twins in Construction

Abstract: Construction is looking closely as Industry 4.0 paradigm (I4.0) transforms many processes in Manufacturing. Technologies associated with I4.0 were born out of the ever-present necessity of automation (and integration) on the shop floor, as well as of better management in product lifecycle with computer-aided software. Although indeed relevant outside Manufacturing, ...

Inspection Data Exchange and Visualization for Building Maintenance using AR-enabled BIM

Abstract: After the COVID-19 outbreak, a new concept of building maintenance (BM) systems is needed because current approaches highly rely on physical contact between workers, engineers, and managers. It imposes health and safety risks as increasing concerns about infections and spreads. This adds burdens to take unavoidable close contact and health ...

Comparison of TLS and Photogrammetric 3D Data Acquisition Techniques: Considerations for Developing Countries

Abstract: With the use of digital data, in conjunction with technologies such as BIM and digital twin, construction professionals have the ability to monitor the progress efficiently and perform detailed quality assessments. The rapid development of multiple data acquisition technologies, such as terrestrial laser scanning (TLS) and photogrammetry techniques, has allowed ...

Digital Commissioning Processes for the Oil and Gas Sector

Abstract: Oil and Gas (O&G) projects have complex engineering endeavours. A digital information management process is vital to increasing efficiency due to projects' size and complexity. The industrial plants' commissioning is regarding on-site testing to check performance and ensure final compliance of all equipment and systems installed. On-site commissioning procedures are ...

Overview of the State-of-Practice of BIM in the AEC Industry in the United States

Abstract: The Architecture, Engineering, and Construction (AEC) industry has undergone a significant and radical transformation in its design and documentation process as it evolved from the days of the drafting board to today's Building Information Modeling (BIM) process. As BIM remains the center of this transformation, it is important to keep ...

5G Wireless Communication for Autonomous Excavation

Abstract: The applicability of wireless 5G network to the information communication needs of autonomous excavations is studied. An autonomous excavator developed by the University of Oulu is used for the experiments in a 5G test network at the Linnanmaa Campus of the University of Oulu. In the experiments, remote and autonomous ...

The Use of Drones in the Construction Industry: Applications and Implementation

Abstract: In a volatile, uncertain, complex, and ambiguous world, Industry 4.0 can be the silver lining of the construction industry which has been facing daunting chronic problems for decades. The transformative impact of Industry 4.0 which has been well documented in the industrial sector has spurred interested among construction researcher to ...

Intelligent BIM-based spatial conflict simulators: A comparison with commercial 4D tools

Abstract: In construction projects, the space required for executing each activity is unanimously recognized as a limited but renewable resource, like workers, equipment, and materials. Overloading a given resource space, as demonstrated by statistics, leads to efficiency losses and safety threats. Despite the valuable contributions provided by academics and the construction ...

BIM-assisted, automated processes for commissioning in building services engineering

Abstract: State-of-the-art building energy systems exhibit a high technical complexity. In the commissioning phase, technical building elements (TBE) are put into operation trade-by-trade and as linked complete systems. Besides the correct wiring on component level, instantiating the building automation and detecting errors is a cumbersome process in practice. The paper addresses ...

Blockchain-supported design tool on building element scale

Abstract: Sharing building data or building models still represents a problem within design practices in the architecture, engineering and construction industry. Additionally, digitalization, automation or traceability of processes face numerous workflows and changing stakeholder constellations, with multiple software tools escaping the scopes of common data environments or similar digital solutions. Vague ...

Digital Transformation in Asset Management - A Case of BIM Adoption in New Zealand Local government

Abstract: Digital technologies are taking place in all spheres of the society and affecting every business sector including the construction industry. As a key player of the industry, local government in New Zealand invests in numerous digitalised Asset Management Information Systems (AMIS) in order to efficiently and effectively manage its infrastructure ...

Project-based curriculum for teaching construction robotics

Abstract: As innovations in construction robotics are being tested and deployed on site thanks to technological advancements in computing and sensing, Civil Engineering researchers must consider how to connect real-world innovations with research and teaching at a much faster pace. Observing the practice helps identify problems and test engineering solutions and ...

A case-based reasoning technique for evaluating performance improvement in automated construction projects

Abstract: Automation of construction processes facilitates increased productivity and overall higher project performance. This paper presents a methodology for comparative assessment of different construction processes and selection of an optimal solution based on appropriate automation implementation. Construction processes are quantitatively evaluated using a methodology combining case-based reasoning and compositional modeling. Through ...

Construction Robotics Excellence Model: A framework to overcome existing barriers for the implementation of robotics in the construction industry

Abstract: The construction industry is characterized by low productivity and inefficient processes. In addition, the level of digitalization and automation in this industry is low compared to other industries. Although the added values of using robots in the industry have been known for a long time and the technology has been ...

State of Advances in Reality Capture for Construction Progress Monitoring and Documentation

Abstract: Construction documentation is necessary on every project. Information captured must be accurate, timely and actionable. With several technologies and techniques available, the aim of this study is to determine the current state of the industry on this topic. The objectives of this study are to investigate the status of construction ...

Action Sequencing in Construction Accident Reports using Probabilistic Language Model

Abstract: Construction remains among the most hazardous workplaces, thus a significant amount of time and effort in reporting and investigating the accident occurrences has been done in the past decades by government agencies. In light of construction safety, analyzing textual information in construction accident records may assist in our comprehension of ...

Fabrication Information Modeling: Closing the gap between Building Information Modeling and Digital Fabrication

Abstract: Additive manufacturing (AM) is no longer a new technology and is already being used profitably in many sectors of the economy. AM is also becoming increasingly popular in the construction industry, and more and more research is focused on unlocking new building materials for AM. As a digital fabrication method, ...

A Methodology for BIM-enabled Automated Reality Capture in Construction Inspection with Quadruped Robots

Abstract: Construction inspection is an important part of the construction management process to ensure that the project is compliant with the requirements, regulations, and standards. Due to time and cost constraints, inspectors representing owners, as well as architects, designers, and other stakeholders might not be able to visit and inspect the ...

iHRC: An AR-based interface for intuitive, interactive and coordinated task sharing between humans and robots in building construction

Abstract: The research presented in this paper introduces a novel method for Augmented Reality informed human-machine collaboration in the context of timber prefabrication. The concept is based on the craftsman controlled instructive interaction between a High Level of Automation (robotic) fabrication setup and a human co-worker. It argues that by enabling ...

A Web-Based GIS Tool for Progress Monitoring of Linear Construction Projects

Abstract: Efficient project monitoring is a key to a project's success. Linear construction projects span across large distances and require similar activities to be carried out repeatedly over multiple small segments for project completion. Thus, monitoring their progress becomes challenging. This is a matter of concern since proper progress monitoring can ...

Towards a Distributed Intelligent Home Based on Smart Furniture for China's Aging Population: A Survey

Abstract: Population aging is one of the major challenges facing the world. In particular, the advent of China's aging society caused by various factors will be a major threat to its future development. Therefore, serious measures need to be taken to achieve its demographic sustainability. Smart furniture can be considered as ...

Vision-based Excavator Activity Analysis and Safety Monitoring System

Abstract: In this paper, we propose an excavator activity analysis and safety monitoring system, leveraging recent advancements in deep learning and computer vision. Our proposed system detects the surrounding environment and the excavators while estimating the poses and actions of the excavators. Compared to previous systems, our method achieves higher accuracy ...

Semantic Optimal Robot Navigation Using Building Information on Construction Sites

Abstract: With the growth in automated data collection of construction projects, the need for semantic navigation of mobile robots is increasing. In this paper, we propose an infrastructure to leverage building-related information for smarter, safer and more precise robot navigation during construction phase. Our use of Building Information Models (BIM) in ...

CIM-enabled quantitative view assessment in architectural design and space planning

Abstract: A view is among the critical criteria in an architectural design process. Presently, it is assessed by conventional site observation, labour-intensive data collection, and manual data analysis before designing a building mass, plan, façade, openings, and interior space. City Information Model (CIM), with its capabilities to store, visualize, and analyze ...

A Conceptual Framework for Secure BIM-based Design: Using Blockchain and Asymmetric Encryption

Abstract: Blockchain is a disruptive technology that has great potential in securing BIM data immutability and traceability. However, integrating BIM management with blockchain still faces a risk of sensitive information leaking because blockchain is such a transparent network that BIM data are disclosed to every member. Therefore, this paper proposes a ...

A digital twin framework for enhancing predictive maintenance of pumps in wastewater treatment plants

Abstract: Wastewater treatment plants (WWTPs) are a type of critical civil infrastructure that play an integral role in maintaining the standard of living and protecting the environment. The sustainable operation of WWTPs requires maintaining the optimal performance of their critical assets (e.g., pumps) at minimum cost. Effective maintenance of critical assets ...

The BIMERR Interoperability Framework: Towards BIM Enabled Interoperability in the Construction Sector

Abstract: Interoperability is an ever-present challenge for the construction industry despite the intensive research and standardisation efforts, including Building Information Modelling (BIM), and Common Data Environments (CDEs). This paper presents the BIMERR Interoperability Framework (BIF), a cloud-based platform aiming to facilitate seamless data integration, leveraging flexible ontology and data model management ...

Use of BIM in the Analysis of Concrete Damage Structures: A Systematic Review of the Literature

Abstract: The application of Building Information Modeling (BIM) technology allows a digital representation of physical and functional characteristics of places, which is particularly beneficial to civil engineering. The present article proposes to evaluate the utilization of BIM technology to quantify the damage caused to concrete structures, based on a systematic review ...

Towards a Construction Site Control System ? Task Management in Construction Operations and Intralogistics

Abstract: The operation of automated construction equipment and autonomous construction robots depends on contextual information regarding the job to be carried out. Therefore, robots as well as equipment require a task-based construction site control system. Such a system also provides some advantages for construction managers. However, some prerequisites must be met ...

Blockchain-based E-tendering Evaluation Framework

Abstract: Tendering & Bidding generally involve many construction units participating in a project bidding. The purchaser selects the best bidder with a short construction period, low cost, high quality, and good reputation. There are huge economic benefits and points of concern behind it. Tendering suffers an increased risk of data tampering ...

The Needs and Trends of Urban Simulation Platforms- A Review

Abstract: Half of the global population lives in cities, and it is still increasing as people are moving to cities in search of better education, job opportunities, and so on. The existing infrastructures of the cities are being stretched beyond their capacity and requirements for well-organized urban environment and efficient urban ...

Towards an Integrated Building Information Modeling (BIM) and Geographic Information System (GIS) Platform for Infrastructure

Abstract: Due to the increasing global population, the Architecture, Engineering, and Construction (AEC) industry is placed in front of a significant challenge to provide and maintain the necessary urban development and solid infrastructure systems to support this increase. Infrastructure systems must be resilient and sustainable, especially being critical to the nation's ...

Realizing, Twinning, and Applying IFC-based 4D Construction Management Information Model of Prefabricated Buildings

Abstract: Prefabrication is regarded as the first level of industrialization in the construction industry. A unified 4D information model with good interoperability is the key issue to realize effective project management of prefabricated buildings. This paper intends to promote prefabricated buildings' management by developing an IFC-based framework to institute a unified ...

Enabling operational autonomy in earth-moving with real-time 3D environment modelling

Abstract: Digital 3D environments are already integral parts of construction and are on the critical path of end-to-end site autonomy. They currently provide human users at all levels of an organisation, access to relevant digital representations of job-critical information at various lifecycle modes, from asset design through to asset maintenance. However, ...

Developing a knowledge-based system for semantic enrichment and automatic BIM-based quantity take-off

Abstract: In construction cost estimation, building information modelling (BIM) has been commonly utilized to support automatic quantity take-off (QTO). However, conventional BIM models do not contain all the necessary information for QTO, and the calculation does not follow the descriptive rules in standard method of measurement (SMM), which impact the cost ...

A BIM Integrated Hazardous Zone Registration Using Image Stitching

Abstract: Identifying hazardous zones is one of the priorities and duties of construction safety monitoring. With the emergence of vision intelligence technology, hazardous zones detected by AI algorithms can support safety managers in predicting potential hazards as well as making decisions. However, the risky area in images/videos continues to suffer from ...

Dam Sustainability Assessment and Flood Volume Estimation Using Remote Sensing and GIS

Abstract: In recent years, increasing number of unprecedented rainfall events around the world brought about devastating floods that have been a challenge for urban planners and decision makers. Numerous studies addressed these floods to climate change and investigated its trends at different time scales. In face of many uncertainties caused by ...

Vision-based Precast Concrete Management Plan in Off-Site Construction Site : Using PC Member Quality Grades

Abstract: As a product of commercialization in prefabricated buildings, the information of the whole life cycle of Precast Concrete (PC) is an important basis for product quality traceability and progress control. During the stage of production, transportation, storage and installation, some quality problems inevitably appear on PC, and according to the ...

An Integrated Scan-to-BIM Approach for Buildings Energy Performance Evaluation and Retrofitting

Abstract: Energy retrofitting is paramount to reduce the use of energy in existing buildings, with benefits to the environment and people's economy. The increasing use of novel technologies and innovative methodologies, such as Terrestrial Laser Scanning (TLS) and Building Information Modelling (BIM), is contributing to optimise retrofit processes. In the context ...

A Systematic Review of Automated BIM Modelling for Existing Buildings from 2D Documentation

Abstract: Building Information Model (BIM) with rich geometric and semantic information of facilities has increasingly been used to establish the City Information Model (CIM). Although BIMs for new buildings are becoming more available, BIMs for most existing buildings can only be modelled from 2D drawings and specifications. Manual BIM modelling is ...

Enhancing Deep Learning-based BIM Element Classification via Data Augmentation and Semantic Segmentation

Abstract: A critical aspect of BIM is the capability to embody semantic information about its element constituents. To be interoperable, such information needs to conform to the Industry Foundation Classes (IFC) standards and protocols. Artificial intelligence approaches have been explored as a way to verify the semantic integrity of BIM to ...

Design optimization approach comparing multicriterial variants using BIM in early design stages

Abstract: Building design processes usually follow similar workflows with different stakeholders and interdisciplinary design teams incorporating their individual domain knowledge. To improve the holistic performance of building designs considering economic and environmental qualities, design decisions based on simulations and analysis in early phases have a significant impact on the resultant design. In ...

Establish a Cost Estimation Model for Pre-Sold Home Customization based on BIM and VR

Abstract: The customer has the opportunity to participate in the space planning of the house when the customer purchases a pre-sold house, which is called a custom modification. The advantage of providing custom modification is that the design of the house can be customized based on the client's living habits. Because the ...

Towards Near Real-time Digital Twins of Construction Sites: Developing High-LOD 4D Simulation Based on Computer Vision and RTLS

Abstract: 4D simulation can be used in the planning phase of a project for constructability analysis, which aims to optimize construction processes and improve safety management. The same 4D simulation can be used as a digital twin in the construction phase for progress monitoring and identifying potential safety issues based on ...

Logging modeling events to enhance the reproducibility of a modeling process

Abstract: This study was aimed at developing a building information modeling (BIM) process logger that can capture modeling process information as an event log file. BIM log mining is a research area that focuses on utilizing a massive amount of data created from BIM software usage. Several studies have monitored, analyzed, ...

Towards HLA-based Modeling of Interdependent Infrastructure Systems

Abstract: The accurate modeling of critical infrastructure systems (CISs) and their interdependencies is essential to assessing and predicting the behavior of interdependent CISs under various operation scenarios. Existing modeling approaches have limited ability to incorporate CIS domain knowledge and capture the systemic heterogeneity among the CISs, and thus cannot simulate the ...

Systematic investigation of non-conformance root cause in prefabrication: a nuclear case study

Abstract: To help project managers better understand non-conformance in prefabrication projects, this research presents a probabilistic empirical study on non-conformance reports (NCRs), their root cause and frequency of occurrence, as well as their impact on the project cost and time. Data from a completed nuclear project were collected and analyzed, where ...

Spatio-temporal planning simulation of temporary elevators in construction using a game engine

Abstract: Designing a reasonable and efficient transportation system of temporary elevators from the perspective of spatio-temporal planning is beneficial for the successful completion of construction projects. Specifically, the determination of the service period and floor of temporary elevators and the consideration of the limited availability of time and space should be ...

Discrete Event Simulation of Multi-purpose Utility Tunnels Construction Using Microtunneling

Abstract: The traditional method of burying underground utilities (e.g., water, sewer, gas pipes, and electrical cables) has been used for many decades. Repeated excavations related to this method cause many problems, such as traffic congestion and business disruption, which can significantly increase the social costs. Multi-purpose Utility Tunnels (MUTs) are a ...

Importance of secondary processes in heavy equipment resource scheduling using hybrid simulation

Abstract: As part of the Architecture, Engineering, and Construction (AEC) industry, heavy civil engineering with its equipment-intensive processes is a current focus of discussion concerning emission reduction. Adopting Industry 4.0 technologies for resource scheduling can significantly increase the savings potential significantly. One of these digital technologies is the Discrete Event Simulation ...

Develop and Benchmark FDS Numerical Models to Simulate Fundamental Fire Behavior in CLT Structures

Abstract: Cross-laminated timber (CLT) is used as the primary structural element for high-rise mass timber buildings. The mass timber buildings that are under construction are largely unprotected as they are not yet equipped with active or passive fire protection systems. With the addition of Types IVA, B, and C, the 2021 ...

Towards Intelligent Agents to Assist in Modular Construction: Evaluation of Datasets Generated in Virtual Environments for AI training

Abstract: Modular construction aims at overcoming challenges faced by the traditional construction process such as the shortage of skilled workers, fast-track project requirements, and cost associated with on-site productivity losses and recurrent rework. Since manufacturing is done off-site in controlled factory settings, modular construction is associated with increased productivity and better ...

Using Image Processing to Classify Roofs based on Damage Level

Abstract: Roofing systems are considered one of the items that in most need of frequent inspection and rehabilitation due to its ongoing exposure to the elements. Manual roof inspections are time-consuming and subjective. This study uses Convolutional Neural Network (CNN), an image-processing technique, to classify roofs according to their damage level. ...

Fast Online Incremental Segmentation of 3D Point Clouds from Disaster Sites

Abstract: In monitoring disaster sites, mobile robots represent a fast, reliable, and practical option to remotely inspect active areas in disaster management for applications such as risk management, search and rescue, and structural assessment purposes. Mobile robots can efficiently collect laser scan data and reconstruct the state of ongoing disaster relief ...

Vision-Based Progress Monitoring of Building Structures Using Point-Intensity Approach

Abstract: Progress quantification of construction projects is critical for project managers to manage projects effectively. The trade-off between computation time and accuracy is a key aspect while selecting the quantification method. Though accuracy is essential, project managers require real-time information about quantities of work completed on various building components to make ...

QUANTITY ESTIMATION OF EXECUTED WORKS USING IMAGE ANALYTICS

Abstract: Progress monitoring is key to any successful project. Often this is a hectic task that involves manpower in preparing Daily Project Reports (DPRs) to physically monitor the activities on site. Recent developments in the fields of photogrammetry and point cloud processing techniques have laid a new path in using point ...

Intelligent Archiving of Interior Design Images using Panorama Picture Sources

Abstract: This paper aims to propose an approach to establishing an intelligent interior design reference image database using 360-degree panorama picture sources. Building interior design reference images are usually taken by people in an ad-hoc way and stored/used for various purposes as non-standardized design communication resources. As several web/apps provide such ...

A Timely Object Recognition Method for Construction using the Mask R-CNN Architecture

Abstract: Efficient progress monitoring and reporting require detailed and accurate reports from construction sites in a timely manner. These reports include important information to assist decision-making through comparison of as-built information to as-planned state. Manual reporting is time-consuming, error-prone, costly and is highly dependent on site personnel expertise. Advances recently made ...

Point Cloud Semantic Segmentation of Concrete Surface Defects Using Dynamic Graph CNN

Abstract: Obtaining accurate information of defective areas of infrastructures helps to perform repair actions more efficiently. Recently, LiDAR scanners are used for the inspection of surface defects. Moreover, machine learning methods have attracted the attention of researchers for semantic segmentation and classification based on point cloud data. Although much work has ...

Deep Learning-Based Entity Recognition in Construction Regulatory Documents

Abstract: In the construction industry, contractors require precise knowledge of design restrictions originating from regulatory documents and contract specifications. For the automatic compliance checking of the building design regarding these rules, they have to be converted from the representation in natural language to a machine-readable format. This task, if carried out ...

A Deep Learning-based detection of Fall Portents for Lone Construction Worker

Abstract: As construction projects resume worldwide and workers return to the job site, the possibility of transmitting the Covid-19 could be added to the extensive list of risks confronting workers in the construction sites; thus, the workers need to work alone in an assigned activity. Many workers are already working alone ...

Data Cleaning for Prediction and its Evaluation of Building Energy Consumption

Abstract: Building consume a large amount of energy and a plenty of methods to mine into energy consumption data to aid intelligent management are proposed. However, the data quality issues are inevitable and the influence is lack of discussion. This paper proposed a data cleaning method combing threshold and cluster method. ...

BIM-based variant retrieval of building designs using case-based reasoning and pattern matching

Abstract: Architects today still very often create traditional 2d plans in the early planning phase, which form the basis for discussions with investors, clients and engineers. The designs are often difficult to understand for non-experts and design variants can only be compared with great effort. The use of BIM models simplifies ...

Real-time Digital Twin of Robotic construction processes in Mixed Reality

Abstract: The use of robots in construction has increased the safety and productivity in the construction site. Robots execute complex programmed codes to complete construction related tasks. Unfortunately, there are limitations on project management to monitor the execution process of robot due to undeveloped human-robot collaboration interfaces. Digital Twin (DT) is ...

Augmented Reality to increase efficiency of MEP construction: a case study

Abstract: Mechanical, Electrical, and Plumbing (MEP) play a crucial role in civil construction projects. MEP is characterized by various interdisciplinary and interconnected activities of multiple trades. Traditionally, not updated design information and communication problems are very common in this industry. Thus, schedule delays and cost overruns are frequent in MEP construction ...

Markerless Augmented Reality for Facility Management: Automated Spatial Registration based on Style Transfer Generative Network

Abstract: On-demand and real-time building information is of great value to support facility management. Such information can be easily retrieved from an up-to-date building information model (BIM), and then intuitively presented to facility managers or inspectors by augmented reality (AR). However, effective spatial registration into BIM so as to align the ...

Remote Monitoring System and Controller for the Construction Machinery using AR Smart Glasses

Abstract: The increased use of construction machinery in the industry poses challenges of safety and regulation for the site workers. A remote monitoring system for the construction machinery can help in avoiding fatal accidents whilst providing continuous sensor information to the user. The present remote controller has shortcomings of accessibility, less ...

BIM-LCA Integration for Energy Modeling of Modular Residential Projects

Abstract: Energy-efficient buildings have gained an increasing attention in the construction industry thanks to their significant contribution to saving world's energy consumption. Life Cycle Assessment (LCA) provides an opportunity to improving energy performance of buildings through a holistic assessment of their lifecycle. Previous studies have mainly applied Building Information Modeling (BIM) ...

Challenges in Deictic Gesture-Based Spatial Referencing for Human-Robot Interaction in Construction

Abstract: As robots are envisioned to be deployed in construction job sites to work with humans, there is an increasing need for developing intuitive and natural communication between robots and humans. In particular, spatial information exchange is critical to navigating or delegating tasks to collaborative robots. However, such deictic gestures are ...

Wearable Sensor-based Hand Gesture Recognition of Construction Workers

Abstract: Maintaining good communication is important for keeping the construction site safe and the project running smoothly and on schedule. Hand gestures, as one of the common ways to communicate, are widely used on construction sites due to their simple but effective nature. However, the meaning of these hand gestures was ...

Factors Affecting Inspection Staffing Needs for Highway Construction Projects

Abstract: Highway construction and maintenance projects have been witnessing a significant expansion across the United States. This expansion, coupled with the ongoing problem of labor shortages, adds pressure on state Departments of Transportation (DOTs) to complete more complex projects under more strict cost and schedule constraints. In recent years, construction inspection ...

Addressing COVID-19 Spatial Restrictions on Construction Sites Using a BIM-Based Gaming Environment

Abstract: Spatial conflicts affect crews' productivity and workers' safety. The idea of considering workspaces as a limited resource has brought a remarkable contribution to the effectiveness of traditional scheduling techniques that generally do not consider the spatial-temporal dimension of construction activities. In previous studies, the detection of spatial interferences among main ...

A Dynamic Graph-based Time Series Analysis Framework for On-site Occupational Hazards Identification

Abstract: Different factors combined invariably cause construction fatalities at any time, most of which could be avoided if workers followed the on-site regulatory rules. However, compliance of regulatory rules is not strictly enforced among workers due to all kinds of reasons, even after prior education and training. To address the difficulties ...

Is safety climate different by project size and activity with different risk levels?

Abstract: The purpose of this study is to compare the safety climate by project size and construction activity with different risk levels. Accidents tend to occur more frequently at smaller sites. As safety climate has been regarded as one important leading indicator preventing accidents, this study hypothesized that larger project tend ...

Evaluation and Comparison of the Performance of Artficial Intelligence Algorithms in Predicting Construction Safety Incidents

Abstract: Predicting the outcomes of safety incidents on construction projects is of a great value to various project stakeholders. Accurate estimates allow construction managers to take appropriate preventive measures based on the severity of the outcomes. Such estimates can be predicted using machine learning algorithms, although the quality of these estimates ...

Estimating Hazard Exposure in Tower Crane Lift Operations Using BIM and Path Planning Algorithm

Abstract: Tower cranes play an essential role in the execution of most construction projects. Unfortunately, they are also a major source of fatalities and injuries in the industry, owing to their great mass and large footprint on the site. Aiming to proactively identify and mitigate safety hazards in the design and ...

Semi-automatic Construction Hazard Identification Method Using 4D BIM

Abstract: The construction industry accounts for a considerable portion of work-related accidents annually. Taking appropriate pre-construction measures can significantly lessen the probability of these accidents occurring. An essential step toward achieving this goal is identifying the unsafe attributes before construction begins. This research introduces a semi-automatic method for identifying and reporting ...

A Study on the Construction of a Visual Presentation Method that Can Prevent Cognitive Tunneling in Unmanned Construction

Abstract: One of the problems with unmanned construction is the lack of visual information, which reduces work efficiency to less than half of that in onboard operation. Therefore, methods to provide visual information using drones and image processing were studied in the past. However, the addition of information causes the operator ...

Digitalization-based situation awareness for construction safety management ? A critical review

Abstract: A construction site is a dynamic and complex place where multiple activities, process and elements take place. In an era of digitalization revolution, construction safety management on site faces significant challenges, in particular, there is a lack of understanding about how to raise situation awareness (SA) using digital solutions. Against ...

A Conceptual Framework for Construction Safety Training using Dynamic Virtual Reality Games and Digital Twins

Abstract: The construction industry is suffering from a high rate of accidents that significantly affect the overall performance of projects. Compared to the conventional safety training methods, Virtual Reality (VR) games offer a more immersive and interactive learning experience for the participants. However, training scenarios in most of the existing VR games lack complex tasks and the realistic ...

Autonomous Safety Barrier Inspection in Construction: An Approach Using Unmanned Aerial Vehicles and Safe BIM

Abstract: Construction sites are dynamic, and the environment is changing fast, which means the collective safety equipment, such as fall protection barriers, should also be changed to keep it compliant with the construction codes. However, the safety equipment can become non-compliant for several reasons, e.g., temporal removal in combination with incorrect ...

Unmanned Aerial System Integration for Monitoring and Management of Landslide: A Case of Dominican Republic

Abstract: The Unmanned Aerial System (UAS), Aerial Robot or Drone has been a multi-purpose tool for professionals, especially for its unknown versatile applications and regardless of its challenges in adoption. In the built environment and the current global situation, the topic of disaster management has grabbed attention from the scientific community, ...

Implementation of a Robotic System for Overhead Drilling Operations: A Case Study of the Jaibot in the UAE

Abstract: The use of robots has typically improved workers' health and safety and increased productivity and quality in manufacturing. Current advances in robotic and computer technology, combined with BIM, have led to new applications in construction. However, there is no general framework to guide the implementation of robots under current construction ...

AutoCIS: An Automated Construction Inspection System for Quality Inspection of Buildings

Abstract: Quality inspection of existing buildings is a task currently performed by human inspectors. In general, these inspections consist of assessing the different elements of a building as they are being constructed, checking that they are within acceptable tolerances, and meeting industry standards. Typically, this process is carried out by doing ...

Robotics Applicability for Routine Operator Tasks in Power Plant Facilities

Abstract: There has been a growing interest in adopting autonomous robots to perform routine tasks in facilities management. The goal of facility management is to ensure that the facility performs to design standards. Currently, the cost of maintenance and operations of a facility over its life cycle is oftentimes more than ...

Automatic Generation of Digital Twin Models for Simulation of Reconfigurable Robotic Fabrication Systems for Timber Prefabrication

Abstract: Timber construction and prefabrication are increasingly important. So far, the degree of automation is low. Due to the great variability of construction projects and the building components, automation systems that can adapt flexibly to different construction projects are required. However, a system that fulfills these conditions does not yet exist. ...

Global Localization in Meshes

Abstract: Safely waking up a robot at an unknown location and subsequent autonomous operation are key requirements for on-site construction robots. In this regard, single-shot global localization in a known map is a challenging problem due to incomplete observations of the environment and sensor obstructions by unmapped clutter. In this work, ...

Image Acquisition Planning for Image-based 3D Reconstruction Using a Robotic Arm

Abstract: As-built modeling using advanced visual sensing technologies (i.e., photogrammetry and laser scanning) provides an opportunity for a rapid assessment of construction performance, identifying deviations from 3D CAD/Building Information Modeling (BIM) models (i.e., as-planned model). For reliable decision-making, the accuracy and quality of the as-built model are critical. In particular, data ...

BIM-integrated indoor path planning framework for unmanned ground robot

Abstract: Featuring manual-intensive labour as the primary source of productivity, the construction industry is plagued with low efficiencies and high safety risks. Increasing ground robots have the potential to address these shorting comings. However, the complicated indoor sites result in many barriers for adopting unmanned ground robots (UGR), especially in path ...

Modeling and Control of Multi-Units Robotic System: Boom Crane and Robotic Arm

Abstract: Robotic solutions for the construction industry are attracting the attention of researchers and of the market. Among the various technologies, robotic bricklaying promises to become a disruptive technology. However, most of the solutions proposed so far resulted to be inefficient and did not pass the prototype status. One of the ...

Compilation and assessment of automated façade renovation

Abstract: Broad research concepts are usually developed in different phases where advances are carried out separately. That is the case of the automated and robotic façade renovation with modules. In this case, solutions were developed independently in the context of two research projects. In order to offer a holistic vision, analyze ...

Road map for implementing AI-driven Oulu Smart excavator

Abstract: Evolving machine control systems for excavators are getting more capable every year in civil engineering, now they are usually equipped with hydraulic motion control, localization, and design models in form of building information modelling (BIM). Machine control systems are advancing side by side with the adoption of fast wireless connections like 5G and growing trends of ...

Automated Crane-lift Path Planning Using Modified Particle Swarm Optimization for High-rise Modular Integrated Construction

Abstract: Modular integrated construction (MiC) is a most advanced off-site technology. In a MiC project, it is critical but challenging to install prefabricated volumetric modules efficiently and safely, as they are much heavier and larger than conventional construction components and materials. However, the current crane-lift executions are heavily reliant on operators' ...

BIM-enabled Sustainability Assessment of Design for Manufacture and Assembly

Abstract: Design for Manufacture and Assembly (DfMA) is an emerging concept introduced from the manufacturing sector to transform the construction industry and accelerating "off-site" capabilities. Enhancing the sustainability of DfMA is challenging and requires accounting for various environmental and managerial impacts on the process of manufacture and assembly, especially for the ...

Data-driven continuous improvement process for railway construction projects

Abstract: Delays and cost overruns are frequent in infrastructure construction projects. Deviations are often identified late, and their causes cannot be traced back. Traditionally, decisions are made by experience and not with the support of data directly coming from the site. Moreover, schedules are often static and thus not able to ...

Is Your Construction Site Secure? A View from the Cybersecurity Perspective

Abstract: The construction industry is increasingly using information technologies (IT) and operational technologies (OT) to enhance processes and operations through digitization. Creating, editing, storing, and sharing information in digital environments is only one side of the coin; the other involves monitoring and controlling physical processes on construction sites. Given the nature ...

A Smart Contract-based BPMN Choreography Execution for Management of Construction Processes

Abstract: Construction management can be grouped into two different levels: strategic early planning, that provides the baseline for project monitoring, and short time initiatives, based on objectives and self-organization from actors who are involved in on-site processes. The latter can be considered as a complex system management issue since it presents ...

A Case Based Reasoning Approach for Selecting Appropriate Construction Automation Method

Abstract: Construction automation helps to improve productivity and project performance. This study demonstrates a methodology for evaluating project performance improvement through appropriate automation of construction processes. This quantitative evaluation approach involves a compositional modeling driven case-based reasoning methodology. Potential processes for executing the activities in a project can be explored by ...

Quality Management Processes and Automated Tools for FM-BIM Delivery

Abstract: Despite the significant benefits of Building Information Modeling (BIM) that can be potentially achieved during the operation and maintenance (O&M) phase, industry has so far mainly focused on its implementation in the design and construction phases. As-built BIM models cannot be efficiently used mainly due to a lack of expertise ...

An Approach to Data Driven Process Discovery in the Cost Estimation Process of a Construction Company

Abstract: This work examines the potential of process mining in the Architecture, Engineering, Construction, and Operation (AECO) industry, where process mining is rarely applied. The main reason is that standardised processes are hardly ever performed due to the complexity of projects. To address this application gap, the software-supported cost estimation process ...

An ontology towards BIM-based guidance of building façade maintenance

Abstract: To ensure public safety, major cities in the U.S. have façade ordinances that require periodic façade inspections and reporting of façade conditions. Our shadowing works show that the current inspection processes are based on inspectors' experience rather than systematic inspection guidance. Besides, façade inspectors have different preferences to group their ...

From BIM to Inspection: A Comparative Analysis of Assistive Embedment Inspection

Abstract: Embedments (embeds) are used extensively in construction for the attachment of dissimilar construction materials, such as, concrete to steel and wood to concrete. Coordinating the layout, delivery, and placement of these embeds is a sensitive construction chore, one that if not done properly, can lead to considerable lost productivity, delayed ...

Enhanced Construction Progress Monitoring through Mobile Mapping and As-built Modeling

Abstract: Construction projects are often suffered from time delay and cost overrun, unavoidably leading to underperformance and low productivity of the construction industry. Inadequate monitoring of construction progress is one of the key factors behind this scenario that has a detrimental effect on subsequent construction activities. Recent development in 3D Building ...

Classification of robotic 3D printers in the AEC industry

Abstract: Three-dimensional (3D) printing is a branch of additive manufacturing (AM) that works by slicing a 3D computer aided design (CAD) model into 2D layers and sequentially printing each layer additively until the entire object is obtained. There has been a growing interest in 3D printing in the architecture, engineering, and ...

Gamification and BIM - The didactic guidance of decentralised interactions of a real-life BIM business game for higher education

Abstract: The Jade University of Applied Sciences organized the digital business game "PING PONG", a BIM Game, to teach students in the Department of Architecture the networked and digital planning methodology BIM. Building Information Modelling (BIM) is to become the planning standard for construction projects and thus a fixed component of ...

Key approaches to construction circularity: a systematic review of the current state and future opportunities

Abstract: Circular economy (CE) strategies have been considered to help reduce global sustainability pressures in different sectors; however, there is a gap about how they could be used to contribute to the Architectural, Engineering and Construction (AEC) domain. Past research used lifecycle assessment (LCA) methods or experts' opinions to partially identify ...

A Proposed Curriculum for Teaching the Tri-Constraint Method of Generative Construction Scheduling

Abstract: Typical construction project management and production management courses teach the critical path method, in which only the precedence constraint is considered while scheduling activities. By contrast, the tri-constraint method is an object-based scheduling method that considers activity precedence, resource constraints, and spatial availability. However, the tri-constraint method is only taught ...

Understanding and Leveraging BIM Efforts for Electrical Contractors

Abstract: The increased complexity of construction projects coupled with the increase in customer expectations has fueled electrical contractors' interest in innovation as a source of competitive advantage. Emerging technologies such as Augmented Reality and Digital Twins have recently gained momentum in the electrical construction industry. While these emerging technologies provide a ...

Interactions between Construction 4.0 and Lean Wastes

Abstract: Lean construction and Construction 4.0 are two prominent concepts challenging traditional practices in the construction industry. The continuous increase in competition and the demand for more efficient project delivery with less waste is pressuring construction companies to adopt these concepts. Body of literature have discussed the benefits of each separately, ...

Application of digital twin technologies in construction: an overview of opportunities and challenges

Abstract: Digital twin technologies have been widely used among different industries, for which different conceptual models and system architectures have been proposed. However, exactly what processes are required for establishing a digital twin for intended use cases has not been fully studied. This study adopts the systematic literature review analysis focusing ...

Analyzing the Impact of Government-driven BIM adoption: Introducing the case of South Korea

Abstract: Unlike what South Korea have accomplished in the Architecture, Engineering and Construction (AEC) industry, current situation of Building Information Modeling (BIM) adoption in South Korea is still challenging. To identify the impact of government-driven manners on BIM adoption, this study presented the status of BIM application in South Korea. First, ...

Diminished Reality in Architectural and Environmental design: Literature Review of Techniques, Applications, and Challenges

Abstract: The development of new visualization technologies, such as Mixed Reality (MR) and Augmented Reality (AR), has enabled many applications to improve our daily life. For example, AR has been used in landscape assessment by overlaying virtual objects on a real-world scene to enhance the user's experience. For many advanced visualization ...

Smart Contract Using Blockchain In Construction and Infrastructure Sector in the COVID-19 Pandemic

Abstract: A significant advancement has been contributed by the break-through technologies like smart contracts and blockchain in banking industry, healthcare industry, and construction industry (Zhang 2020). Blockchain can be defined as the distributed public ledger that records all data transaction that is exchanged and shared between the parties within the systems ...

Towards an Ontology for BIM-Based Robotic Navigation and Inspection Tasks

Abstract: The availability of inspection robots in the construction and operation phases of buildings has led to expanding the scope of applications and increasing technological challenges. Furthermore, the Building Information Modeling (BIM) based approach for robotic inspection is expected to improve the inspection process as the BIM models contain accurate geometry ...

Value Stream Mapping of Project Lifecycle Data for Circular Construction

Abstract: With the aim of shifting from the traditional linear flow of resources in the construction industry into a circular model, several studies have focused on the reuse and recycling of construction and demolition waste. The present study focuses on the End-of-Life (EoL) decision-making for built facilities, including buildings and infrastructure, ...

Improving Construction Demonstrations by Integrating BIM, UAV, and VR

Abstract: In recent years, building information modeling (BIM) has been widely used to create animated simulations for engineering demonstrations. On-site engineers often employ animations generated using a BIM system to explain the current project status to their managers, so that the managers can grasp the actual project status. However, the fidelity ...

Using Virtual Reality and Augmented Reality for Presale House Customer Change

Abstract: Using Building Information Modeling (BIM) technology, a unique virtual model of a project can be created, which will allow all parties involved in the design process of project members (owners, architects, engineers, contractors, sub-contractors and suppliers) to collaborate more precisely and more effectively than using traditional processes. The collaboration of ...

Virtual Prototyping-Based Path Planning of Unmanned Aerial Vehicles for Building Exterior Inspection

Abstract: Proper building maintenance is critical to ensuring the well-being of citizens and sustainable development of the urban environment. For high-rise high-density cities, one challenge to building maintenance concerns the inspection of building exteriors, which has been mostly done manually but is of highly risky, labor-intensive, and error-prone. Unmanned aerial vehicles ...

Near Real-Time Monitoring of Construction Progress: Integration of Extended Reality and Kinect V2

Abstract: Construction progress monitoring and visualization have recently undergone advanced development. However, the data exchange process between construction offices and jobsites still lacks automation and real-time data records. Furthermore, an information gap between construction offices and jobsite activity persists, and progress inspectors still need to visit jobsites to check progress and ...

VRGlare: A Virtual Reality Lighting Performance Simulator for real-time Three-Dimensional Glare Simulation and Analysis

Abstract: Lighting performance simulators play an important role in the architectural design process, as it provides the means to address lighting design issues early within the design stage of a construction project life-cycle. Currently, several lighting performance simulators provide support for glare simulation and analysis; however, they are primarily limited to ...

Development of an Augmented Reality Fitness Index for Contractors

Abstract: Construction, one of the most informationintensive industries, plays a vital role in the prosperity of nations and is expected to grow to new heights. This significant expansion, along with the increased complexity and sophistication of construction projects and rapid advances in emerging technologies, has fueled construction companies' interest in innovation ...

A Method to Produce & Visualize Interactive Work Instructions for Modular Products within Onsite Construction

Abstract: Well detailed, informative and accurate work instructions are a necessity to mitigate delays in construction. Today, this is done through a combination of shop drawings, documents, sheets, work pre-planning meetings and onsite verbal work instructions to transfer knowledge and information between all actors. Due to the subjectivity of these methods, ...

Development of Rotary Snow Blower Vehicle Driving Support System using Quasi-Zenith Satellite on the Expressway in Japan

Abstract: The rotary snow blower vehicle operated for removing accumulated snow on road shoulders must be performed even in the conditions of a poor visibility due to a snowstorm or road markings completely covered by snow. The operators of the vehicle have to pay full attention to avoid contacting road structures ...

Remote Control Demonstration of the Construction Machine Using 5G Mobile Communication System at Tunnel Construction Site

Abstract: Since March 2020, 5G has been commercialized mainly in urban areas in Japan, and 5G communication infrastructure demonstration tests are actively conducted among various industries such as telecommunications carriers and construction industries. The authors installed a portable 5G base station close to tunnel portal in "Subcontracting for research and study of ...

Sea Experiment on Tele-operation System of Underwater Excavator

Abstract: We have developed a remote operation support system for underwater excavators and conducted Sea experiments. Underwater excavators have been operated by divers boarding on them. Their main task is levelling rubble mounds of port structures in Okinawa?Japan. However, in recent years, remote control is required due to the decrease in ...

Automation and Operation Record of Large Overhead Crane for Segment Transportation

Abstract: The wall of the shield tunnel body is made by assembling panels called segments into a ring shape. For the segment transportation in this site, quick, accurate and safe operation is required in each device mainly using a crane. However, in recent years, it is difficult to secure human resources ...

Development of an Automated Angle Control System to Improve Safety and Productivity

Abstract: Currently, the high demands and needs to improve productivity and labor-saving in construction industries leads to many automation and mechanization. This report aims to address the shortage of skilled worker in the future as well as improvement of safety, productivity and quality. Comprehensive collection and utilization of information were carried ...

Automated Detection for Road Marking Quality, using Visual Based Machine Learning

Abstract: Most of the cities road marking inspection is performed manually and considered an ideal candidate for automation because it is a labourintensive process. We propose a solution based on automated quality assessment tool for road marking to detect and qualify road marking characteristics. Our data inventory and data collection approach ...

A Construction Progress On-site Monitoring and Presentation System Based on The Integration of Augmented Reality and BIM

Abstract: An on-site construction progress monitoring and presentation system is herein developed that overlays the virtual building information model (BIM) onto the real-time scene of the construction site using augmented reality (AR). The system utilizes the novel AR technology of simultaneous localization and mapping (SLAM), which is a real-time positioning technology ...

Rule-Based Generation of Assembly Sequences for Simulation in Large-Scale Plant Construction

Abstract: The efficient construction of large industrial plants (e.g. concrete plants, chemical plants) in high quality requires precise planning and execution of the individual logistics and assembly steps. For this purpose, detailed step-by-step instructions should be prepared that can be clearly interpreted and thus implemented by the staff on site carrying ...

An analysis of 4D-BIM Construction Planning: Advantages, Risks and Challenges

Abstract: The rapid growth on the field of project management and building information modelling (BIM) has led not only to the enhancement of architectural/structural design, construction methodology and operation of facilities but also to the generating of the new and exciting applications such as 4D simulations, project scheduling and controlling. 4D ...

Ontology-based Product Configuration for Modular Buildings

Abstract: To support mass customization for industrialized construction, researchers and industry have adopted product configuration strategies. Based on the theory of modularization, pre-defined module libraries can be configured into feasible construction projects. However, the digital representation of configuration knowledge is understudied. Current Building Information Modeling (BIM) product modeling does not enable ...

On construction-specific Product Structure Design and Development: the BIM Enhancement Approach

Abstract: The construction industry suffers from low productivity, and the Building Information Modelling (BIM) has not been successful in enhancing the productivity and the flow of information throughout highly fragmented construction projects. Hence, this study aims to facilitate consistency in information and addresses the current gaps in BIM by applying the ...

Parametric Structural Design for automated Multi-Objective Optimization of Flexible Industrial Buildings

Abstract: Individual customer needs and accelerating technological advances in Industry 4.0 are leading to rapid manufacturing changes, thus industrial buildings need to accommodate constantly evolving production processes. The load-bearing structure acts as crucial limiting factor regarding the building's flexibility. As structural performance is highly linked to other design-disciplines, there is a ...

Status of 4D BIM Implementation in Indian Construction

Abstract: Enhanced visualisation is one of the low hanging fruits of BIM implementation. It helps in improving clarity in communications and fosters collaboration & coordination of construction projects for efficient delivery. 4D BIM combines the proposed sequence of work in a project with the 3D parametric digital model of the facility ...

An Information Quality Assessment Framework for Developing Building Information Models

Abstract: Information Quality Assessment (IQA) is an important, but often overlooked aspect, of the Building Information Modeling (BIM) process. Models with information quality issues, such as incomplete and incorrect information, may cause rework during the design process if detected early. Otherwise errors may propagate downstream, leading to significant cost consequences to ...

BIM Based Information Delivery Controlling System

Abstract: The definition of how agreed information deliveries in building projects are achieved and implemented for different objectives and use cases is always a major topic in project management. This procedure is normally specified in accordance with international standards. However, the absence of checklists, guidelines and recommendations for action leads to ...

Development of an Open-source Scan+BIM Platform

Abstract: In the last decade, a significant amount of research and development has been conducted at the intersection of Building Information Modelling (BIM) and reality capture data processing, mainly in the two areas often referred to as ?Scanto- BIM' and ?Scan-vs-BIM'. Interestingly, it appears that all these advances have been made ...

BuiltView: Integrating LiDAR and BIM for Real-Time Quality Control of Construction Projects

Abstract: Global spending on rework in the trillion dollar construction industry is estimated at $570bn of direct costs and $440bn of indirect costs. The cost of rework is on the rise, and the main cause is rooted in quality deviations from construction design. Real-time or even near real-time remote progress monitoring ...

Single Shared Model Approach for Building Information Modelling

Abstract: The current practice for information sharing with building information modelling (BIM) is a distributed data sharing based on conversions. Conversions are problematic due to data loss, redundancy, and conflicting information. A single data schema used by all applications is a requisite for a conversion-free data collaboration. In the study, a ...

Parametric or Non-parametric? Understanding the Inherent Trade-offs between Forms of Object Representation

Abstract: The need for efficient computing in construction modelling and analysis workflows often requires making tradeoffs between the inherent advantages and disadvantages of different datatypes being generated and managed. This is notably observed in geometry reconstruction (e.g., scan-to-BIM, reverse engineering, etc.), where a tradeoff often occurs between computational efficiency and the ...

Development of a Twin Model for Real-time Detection of Fall Hazards

Abstract: The Architecture, Engineering and Construction (AEC) industry is still one of the most hazardous industries in the world. Researchers impute this trend to many factors such as the separation between the phases of safety planning and project execution, implicit safety issues and, most of all, the dynamic and complex nature ...

Automatized Parametric Modeling to Enhance a data-based Maintenance Process for Infrastructure Buildings

Abstract: New innovative and digital approaches, in particular digital methods like Building Information Modeling (BIM), are being used more and more in the Architecture, Engineering and Construction (AEC) Sector. However, most of building operation and maintenance processes still follow conventional processes and are hardly supported by digital databases. Within the widespread ...

Gamification and BIM Teaching the BIM Method through a Gamified, Collaborative Approach

Abstract: Due to the continuous improvement in data acquisition, storage and evaluation, digital technologies are penetrating ever deeper into the operational business of the construction industry. Modern information and communication systems are at the heart of digital working methods. They encompass the factors - People, Processes and Data -, which are ...

Opportunities and Challenges of Digital Twin Applications in Modular Integrated Construction

Abstract: Digital twin (DT) is commonly known as a virtual model of a physical object, a process or a system. In order to create DT, the emphasis is on building a Cyber-Physical System (CPS), where information collected from physical processes is used for computation to generate a real-time monitoring cyber model. ...

Integrating Industry 4.0 Associated Technologies into Automated and Traditional Construction

Abstract: Nowadays, it is ever more common to find mentions in the scientific literature to a "Construction 4.0". Considering, for instance, Offsite Construction, it is clearer how such concept could be realized. Current widespread adoption of BIM helps but is not enough to realize that end, because it is, in general, ...

System Development of an Augmented Reality On-site BIM Viewer Based on the Integration of SLAM and BLE Indoor Positioning

Abstract: Traditionally, when an engineer wants to use Building Information Model (BIM) on-site to support tasks for construction or maintenance, the common approach is to use a tablet or a notebook to run a BIM viewer, thus requiring manual operation for model manipulation. In addition, the BIM presented through the screen ...

Review of Construction Workspace Definition and Case Studies

Abstract: Workspaces in a construction project are considered as critical and limited resources. Since the workspace conflicts cause productivity loss and poor quality, construction researchers have been exploring different workspace definitions and solutions to improve the situations. Construction workspace' function can be classified according to the user's needs and characteristics of ...

A Web-Based Approach to Dynamically Assessing Space Conflicts by Integrating BIM and Graph Database

Abstract: Construction activities require materials or resources to be arranged while planning the route of how these materials or resources can be transported is not a simple process. Traditionally, subcontractors will arrange a daily meeting and negotiate the desired space on site for the next day's resource transporting. However, many of ...

Deployment of a Standardized BIM Modeling Guideline for the Planning and Construction Industry

Abstract: The BIM method is perceived as a synonym for the digitalization of the construction industry. The application of this method enables most of all, the consistent and uniform information management and therefore affords a more efficient communication and collaboration environment to all participants in the life cycle of the respective ...

Design for Digital Fabrication: an Industry needs Analysis of Collaboration Platforms and Integrated Management Processes

Abstract: Digital Fabrication is an emerging systemic innovation in the architecture, engineering and construction sector. However, the design process for digital fabrication lacks an integrated management process or digital collaboration platform. One reason may be a lack of industry stakeholder needs for such processes and platforms. To explore and facilitate such ...

A BIM-Based Approach for Optimizing HVAC Design and Air Distribution System Layouts in Panelized Houses

Abstract: In a centralized air distribution system, the designed ductwork layout impacts the system performance and the construction time and cost. Engineers face various challenges, including spatial limitations, leading them to use assumption-based design methods to balance their design with construction requirements. As a result of this shortcoming, insufficient design details ...

Synthetic Data Generation for Indoor Scene Understanding Using BIM

Abstract: Visual facility inspections performed manually are tasks that can be automated. Segmentation of facility image data is one of the automated methods of identifying problems in facilities. However, the machine learning methodology that is mainly used to train the segmentation model requires a large amount of training dataset. Preparing training ...

Proposal for Automation System Diagram and Automation Levels for Earthmoving Machinery

Abstract: In Japan, earthmoving workers are aging rapidly, and more than one million skilled workers will retire at once in the near future. Thus, the mass retirement of these skilled technicians could bring a significant drop in production capabilities throughout the earthmoving industry. To solve this problem, it is expected that ...

Requirements for Safe Operation and Facility Maintenance of Construction Robots

Abstract: Construction robots are devices of increased danger and, under certain conditions, can become a source of injuries to maintenance personnel, as well as lead to the failure of technological equipment. Most of the accidents are associated with the presence of maintenance personnel in the working area during programming, configuration, training, ...

Safety Concept and Architecture for Autonomous Haulage System in Mining

Abstract: In recent years, automation of mining equipment has been required to improve productivity, predictability, and safety of mining operations. Some major mining companies have begun efforts to automate dump trucks that transport overburden and minerals, eliminating the need for human operators, aiming for reducing labor costs, increasing operating hours, and ...

On-site Autonomous Construction Robots: A review of Research Areas, Technologies, and Suggestions for Advancement

Abstract: The use of robotic systems on construction sites can efficiently reduce construction time and increase safety by replacing construction workers in monotonous or dangerous operations. Robots for on-site construction applications are challenging and difficult to implement because of the evolving and unstructured nature of construction sites, the inherent complexity of ...

Curtain Wall Installation for High-Rise Buildings: Critical Review of Current Automation Solutions and Opportunities

Abstract: In the construction of high-rise buildings, the conventional methods for the on-site installation of prefabricated facade modules require considerable manual handling. This unsafe and inefficient practice can be solved through automation. This paper critically reviews automated Unitized Curtain Wall (UCW) installation and discusses opportunities for future development, as found in adjacent ...

Rationalization of Free-form Surface Construction Method using Wooden Formwork

Abstract: In Japan's construction industry, techniques of producing complex three-dimensional (3D) formwork at construction sites are conventionally developed using the sophisticated skills of carpenters. Inspie of the development of digital technologies, the production of free-form shapes faces considerable cost and time management risks that require pragmatic solutions. In the efficient building ...

Comparison of Shortest Path Finding Algorithms for Cable Networks on Industrial Construction Projects

Abstract: Cable path optimization is a commonly encountered problem in industrial construction projects. Numerous designs are technically feasible but are associated with varying construction costs and effort. Hence, selecting the right network is deemed a critical decision. Multiple shortest path algorithms could be deployed to identify the optimal solution. Although they ...

Constructability: The Prime Target in Value Engineering for Design Optimization

Abstract: An ideal Design-Construction Interface is assumed in the decision making process of initiation and planning. The uniqueness, site conditions and contingencies cannot be envisaged and incorporated in its entirety in all projects. Constructability in resonance to the appropriate technology becomes paramount in deciding the material, structural forms and construction methodology. ...

Blockchain based Framework for Verifying the Adequacy of Scaffolding Installation

Abstract: Falls are the leading cause of construction site accidents and made up more than 60 percent of all construction-related deaths in 2018, according to the Korea Occupational Health and Safety Administration (KOSHA). Accordingly, the government conducts intensive management and supervision of scaffolding and scaffolding installation at small sites while inducing ...

A Technology Platform for a Successful Implementation of Integrated Project Delivery for Medium Size Projects

Abstract: Traditional project delivery methods are inflexible for projects that require a high level of collaboration among project teams as well as present challenges to innovative design and construction approaches. In today's era, projects are executed at a faster pace at the early stages of scope definition. This causes a high ...

Analysis of Excavation Methods for a Small-scale Mining Robot

Abstract: The following paper is discussing the potential excavation systems and development of the production tool system of a small-scale mining robot. The limitations of power and weight increase the complexity of the design of the production tools immensely. Each excavation method's efficiency is depending on the material to be excavated, ...

Optimal Travel Routes of On-road Vehicles Considering Sustainability

Abstract: Transportation is one of the major contributors in global energy consumption and greenhouse gas emissions. Currently, there are approximately 1.32 billion on-road vehicles around the world, which is expected to be doubled by 2040. This increase has triggered deep concerns over the global issues of climate change and sustainable development. ...

Modeling and Control of 5-DoF Boom Crane

Abstract: Automation of cranes can have a direct impact on the productivity of construction projects. In this paper, we focus on the control of one of the most used cranes, the boom crane. Tower cranes and overhead cranes have been widely studied in the literature, whereas the control of boom cranes ...

Automating Crane Lift Path through Integration of BIM and Path Finding Algorithm