The International Association for Automation and Robotics in Construction
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Abstract: Nowadays, typical cities are heavily reliant on automobile cars. which makes the public services inefficient and cities are becoming hollowed out, in this case, cities gradually lose vitality. This study is about the problem which is based on the population alongside the Kitakyushu monorail, people there are looking forward to ...
Abstract: The aim of this paper is to define challenges for Automation and Robotics in construction (A+R) to enhance client and social value. Construction contributes to a positive living environment for society and is the largest sector of Europes economy with a size of around 2,500 billion Euros. Ten research projects ...
Abstract: The keynote provides the sate-of-the-art Japanese R&D in robotics and mechatronics closely related to the construction automation. There are three major domestic robot conferences in Japan. Judging from the number of papers and participants the generic robotic research and development is still very active. Even though the construction industry has ...
Abstract: The current construction industry has different environmental characteristics compared to other industries. Problems such as the instability of labor force demand and supply and the increasing labor costs are surfacing. Thus, in response to a high growth rate of the construction market, it is advisable to lower the level of ...
Abstract: Energy saving is one of the most important environmental factor during the process of building realization. The objective of our contribution is proposal of building machine group selection automated system for earth processes from the point of energy consumption minimization. There is described at this paper structure of machine selection ...
Abstract: Recently, AEC industries have been much research BIM-based energy performance and green building, in Korea. However, Current researches have the lacks of standard guideline for BIM data for BIM-based energy performance assessment and the limitation of interoperability between BIM software. Interoperability is required to Open BIM-based energy performance assessment and ...
Abstract: In Bangladesh Garments Factories are playing a vital role in the field of economical development but over the last 32 years these factories have been highly criticized for the hazardous working environment in the production floor in which high thermal gains from the artificial lighting, poor natural lighting system, excessive ...
Abstract: The concept of a green building was first introduced to Taiwan in 1999, and began to develop regulations for the design and evaluation of energy-saving buildings. The Ratio of Equivalent Transparency (Req) is a basic index for assessing whether a building is energy-efficient. Req is the ratio of the area of ...
Abstract: High population, vehicles, and employment and high energy use could generate congestion that has been considered as a result from diseconomies of agglomeration. However, congestion and energy use problem could be mitigated in a compact city due to shorter commuting distance, efficient vehicular operation, etc. US government and local state ...
Abstract: Decentralized control architectures for multi-storey buildings using wireless sensors and distributed embed- ding systems have been attracting more research recently. The designs for this application are however limited by the com- putational capacity embedded in each subsystem, the communication bandwidth and range of wireless channels, as well as the temporal ...
Abstract: This paper describes an approach force-feedback of excavator which is considered for tele-operation using a novel designed haptic device in virtual environment. This study has two main themes, the newly designed haptic device and force-feedback algorithm in virtual environment for excavator. The device can be controlled by human arm joint. ...
Abstract: For the development of complex AAL-Environments comprising multiple subsystems and assistance tech- nologies new development methods are required exceeding the application scope of architectural methods of space devel- opment and methods of barrier-free architecture. In this paper we present the results of a study on the applicability of a product ...
Abstract: In many cases of renovation work, it is very difficult to gain sufficient information about the existing building such as the positions and dimensions of the frame, interior and equipment because of incomplete or missing drawings. As a result, it is necessary to fabricate the parts on the construction site. ...
Abstract: The current design practice for high performance, custom facade systems disconnects the initial façade design from the fabrication phase. The early design phases typically involve a series of iterative tests during which the environmental performance of different design variants is verified through simulations or physical measurements. After completing the environmental ...
Abstract: The development of "The double arm working machine", that is suitable for demolition and scrap-processing, and its operation support technologies are described. The contents of these technologies are interference warning system, grasping force control system and weight measuring system. In addition, the succession machine, which is developed based on the ...
Abstract: Glass is widely used as finishing material in order to allow good appearance from building inside and outside. And the trend of construction material and component is toward larger and heavier. So, safely to install this heavy duty and fragile glass, we proposed new methodology for glass installation. First we ...
Abstract: The paper describes the methodology of computer modeling of the building process of projects with utility assessment and the main principles of the integrated cost estimation, project management and quality assurance microcomputer based system developed recently. This expert system is based on quick modeling of the building process by use ...
Abstract: The interest in unmanned excavator is growing more and more for the sake of work efficiency and safety of the operator. It is general understanding that an optimal working path planning and inverse dynamic control should be resolved first for the realization of the unmanned excavator. In this paper, the ...
Abstract: The article shows procedure, which enables to control risk during project lifetime on the basis of earned value theory ratings variation in feasibility study. Sample project has been divided into typical investment tasks, then schedule and cost estimate have been worked out. Information according possible cost and time variation for ...
Abstract: This paper presents a crowd model which aims to simulate the individual behaviour and increase the heterogeneity in crowd simulation thus to achieve a more realistic simulation result. This model builds upon the physics foundation by referencing both Reynolds Boids model and Helbings Social Force model. The mechanism of behaviour ...
Abstract: Physical models and scaled prototypes of architecture play an important role in design. They enable architects and designers to investigate the formal, functional, and material attributes of the design. Understanding digital processes of realizing scaled prototypes is a significant problem confronting design practice. This paper reports on three approaches to ...
Abstract: Many engineering consulting firms have adopted knowledge management systems (KMSs) as a tool to record the knowledge and experiences of their engineers and staffs. It was found from previous research that similar construction problems were encountered and resolved by the same firm. The most commonly adopted form of such kind ...
Abstract: There is a CAD data exchange format named SXF (Scadec eXchange Format) in the field of Japanese public works. It was developed by a consortium in 1999 to be based on the ISO10303-202, so that the Ministry of Land, Infrastructure, Transportation and Tourism (MLIT) could start accepting e-delivery (e-submission) of ...
Abstract: The Taipei MRT (Metropolitan Rapid Transit) system has been operated since 1996. Facing the challenge of safety and sustainability of MRT, it is urgent to develop a structural inspection strategy and maintenance system based on the concept of life cycle management. In the mean while, Building Information Modeling (BIM) has ...
Abstract: In order to improve the mobility and practicality of Building Information Models (BIM), a framework using a multimedia device, a global positioning system (GPS) and inclinometer is proposed. The GPS receiver provides location and an inclinometer measures angle of slope, both inclines and declines, of an observer. Based on these ...
Abstract: During the life cycle of a building project, voluminous data and information are usually created along with the delivery processes of building products. Currently, most information management methods are based on several different file collection approaches, which are mostly unrelated. Therefore, the various project participants are unable to synthesize building ...
Abstract: A current trend in the construction sector is the application of Building Information Modeling (BIM) for the efficient integration and management of engineering information. Today, engineering consultant, construction and architectural companies conduct research into the development of BIM in order to integrate and visualize engineering information. The capabilities of BIM ...
Abstract: Over the past five years Building Information Modeling Software (BIM) has made tremendous inroads in the US-AEC industry. The use of BIM software such as Autodesk Revit is now common place among large US contractors. The model is currently being used for issues such as design, engineering, visualization, conflict resolution, ...
Abstract: Building Information Modeling (BIM) has been employed in the AEC industry to provide the data repository for the various stakeholders of construction projects in past years. For example architects use it to streamline the information transition throughout the design phases of a project, structural and MEP engineers use BIM as ...
Abstract: This research introduces the roadmap of Establishment of Korean Traditional House Component Library Project (EKTHCLP) which developed an open BIM-based library system for new Korean traditional house components. In the project, the authors defined a parametric library by an XML-based approach; implemented the library to a browser and then developed ...
Abstract: Much of the developed worlds construction workforce is increasing in average age, and yet construction workers typically retire well before they reach the age of sixty. One reason is that their bodies are worn out because of the nature of the work. We therefore face the challenge of both reducing ...
Abstract: Equipment-involved accidents are a long-lasting problem of the construction industry. Collisions between pieces of equipment are responsible for a significant portion of damages resulting from those accidents. This study discusses strategies for preventing such collisions on the construction jobsites. The strategies are built up on two premises: (1) equipment operators can ...
Abstract: Recently, Home use digital camera equipped with GPS and compass are available in the market. Some of them are equipped with accelerometer and perform positioning in places where receiving GPS signal is difficult. Using such digital cameras, we can record position and direction of cameras on EXIF information of pictures. ...
Abstract: Real-time occupancy information is valuable to the building industry for a wide variety of applications such as on-site safety management, energy conservation, emergency response and so on. With the emergence of various technologies that can potentially be used for indoor location sensing (ILS), the building industry is in search for ...
Abstract: Over the past several decades, there has been rapid growth in research on the displacement measurement system for large structures. However, widely used sensors such as accelerometers, strain gauges, PZT, and GPS have disadvantages that they indirectly measure the displacement, are difficult to install, or costly to maintain. To solve ...
Abstract: Construction projects inherently possess uncertainties, which represent risks and opportunities to contracting business entities. Their business success, therefore, is largely defined by how these uncertainties are managed from the planning and estimating to execution phases. Traditionally risks, in particular, have been dealt by converting them into the form of a ...
Abstract: A sustainability enhancement is generally measurable by its environmental, economic, and socio-cultural effects. To apply this concept, this study developed and empirically tested a risk-based method for evaluating renewable energy policy. The proposed graphical matrix approach coupled with Monte Carlo simulation identifies and measures critical performance indicators at an acceptance ...
Abstract: Chinese mediation mechanism has long been relied to resolve every kind of disputes from Western Zhou Dynasty (1046-771 BC). Contemporary Taiwanese legal system inherits this invaluable culture and introduces foreign laws into its legal system. Since dispute board (DB) and the way to enforce its decisions has been widely discussed ...
Abstract: The analysis of urban morphology and its impact on ventilation is a critical task in urban planning. Accurate urban-scale computational fluid dynamics models (CFD) are sometimes too expensive for rough estimations. Effective and convenient computer tools that could depict the pattern of the urban roughness are in great need. This ...
Abstract: The limitation in the design space of industrialized housing opens up possibilities for the creation of customer focused configuration systems and for increased level of design automation. The creation and performance analysis of design variants can be made quicker and be of better quality with the help of such configuration ...
Abstract: This paper deals with the development of information system for steel fabricator to manage its production and delivery works. Each fabricator has different production and quality management capabilities. However, most of the proposed information models for steel construction management have focused upon the construction site for delivery and erection of ...
Abstract: An effective Incentive/Disincentive (I/D) rate should fall above what a contractor needs to turn a profit by exceeding Contractors Additional Cost (CAC) for expediting construction and below the total cost saving by the agency. However, determining this type of I/D rate has been extremely challenging because of contractors reluctance to ...
Abstract: Existing buildings represent the greatest opportunity to improve building energy efficiency and reduce environmental impacts. However, millions of decision makers of the buildings usually lack sufficient information or tools for measuring their buildings energy performance. The goal of this project is to develop and evaluate rapid low-cost measurement and modeling ...
Abstract: This paper presents a comprehensive refinement of system modeling and optimization study of air-cooled direct expansion (DX) refrigeration systems for commercial buildings to address the energy saving problem. An actual DX rooftop package of a commercial building in the hot and dry climate condition is used for experimentation and data ...
Abstract: Daylight is the main contributor to save the energy consumption in the residential building because it is the most valuable natural resources available to architects and engineers to develop the visual quality of interior spaces. It is accredited that a significant reduction in artificial lighting and subsequent primary energy consumption ...
Abstract: The overall attainable reduction in energy consumption and enhancement of human comfort of Heating, Ventilating, and Air Conditioning (HVAC) systems are dependant on thermodynamic behavior of buildings as well as performance of HVAC components and device control strategies. In this paper by refining the models of HVAC components, the influence ...
Abstract: The primary consumers of building energy are heating, cooling, ventilation, and lighting systems, which maintain occupant comfort, and electronics and appliances that enable occupant functionality. The optimization of building energy is therefore a complex problem highly dependent on unique building and environmental conditions as well as on time dependent operational ...
Abstract: HIFLEX is an innovative context-aware modular building skin system capable of operation-time energy and human comfort optimization by being equipped with various sensors, actuators and delicate components for thermal control, solar irradiance regulation and enclosure-based ventilation combined with heat recovery mechanism. Its Low-E coated high performance dual glazing with air ...
Abstract: The aim of this paper is to propose a new type of excavator - electric excavator (ELEX) - with energy saving capacity using six quasi independent electro-hydraulic actuators (EHAs). The quasi-independent configuration minimizes hydraulic interferences among the actuators and losses which occur in traditional hydraulic excavators (HYEXs). In addition, the ...
Abstract: This paper describes the application of machine vision technology to prevention of collision accidents with heavy equipment such as hydraulic excavators and cranes. The images of the back side of heavy equipment with cameras which can take a picture with 180 degree shooting angle were captured and the worker was ...
Abstract: Construction progress monitoring has always been a major concern for managers. Several are the advantages provided by a reliable approach in this field, among which we cite efficient project performance control and quality control, timely on-site inspections, better control of health and safety prescriptions against job injuries and fatalities, which ...
Abstract: In this paper, demographic change and ageing societies are identified as potential drivers for the development and implementation of pervasive technologies in our environment. Computers and Microsystems have become smaller and cheaper and become a part of our life and society. Wearable Robots, advanced prosthetics and sensor implants even aim ...
Abstract: In the competitive market of the construction industry, construction firms attempt to implement the projects with the least cost and time, and the highest quality. They try different ways to increase the efficiency of their projects. One of the most important factors which affects the efficiency of construction projects is ...
Abstract: Collisions on construction sites are one of the major causes of fatal accidents. The complexity of equipment operations require detailed planning and better real-time control of the work. Research involving artificial intelligence in construction industry has been done to enhance communication between team workers and resolve distributed problems, for example, ...
Abstract: Crane lift path planning aims to find a collision-free trajectory for the lifted object among on-site obstacles from its pick location to the final location. However, the current manual planning process is time-consuming, prone to errors, and requires the practitioners to have exceptional visual abilities, since the construction site is ...
Abstract: Excavators are widely used in public works and construction sites. Semi-automated or automated excavators are also being developed. They are used for very dangerous tasks such as building dismantlement and disaster restoration. Under difficult circumstances, it is more efficient to use an excavator operated with a remote control system. Many ...
Abstract: Conceptual cost estimates, are prepared at the very early stages of a project, and generally before the construction drawings and specifications are available. At this stage, cost estimates are needed by the owner, contractor, designer, or funding agencies for determination of the feasibility of a project, financial evaluation of a ...
Abstract: The reconstruction of surfaces from unorganized point clouds can be of great use in construction applications. Point clouds are mostly created by 3D scanners. Another technique for generating point clouds is the structure-from-motion technique, where the point cloud is generated from a sequence of images. This paper utilizes a surface ...
Abstract: Automated recognition of worker activities has the potential in aiding quick assessment of labour productivity on construction sites. A novel method called accelerometer based activity recognition has been investigated and preliminary results show that it has good potential for deployment in construction environment. The major decisive factor influencing the performance ...
Abstract: If all data, records, checklists and photographs accumulated during quality checks and labor safety inspections at construction sites are not systematically arranged, stored and tracked. The status of improvements is not confirmed and tracked in a timely manner, not only will engineering quality and construction safety be influenced but work ...
Abstract: Information management became the tidal for most occupations. An effective management system to inte- grate related information for relaxation camp can provide effectiveness from different phases. This can enhance the farm value, feedback with ecology care, and significantly assist for long-term development. In Medium-range Construction Plan for Important Sightseeing Scenic ...
Abstract: The unpredictable traffic condition around the construction site and the operators uneven productivity often make it difficult to rapidly identify an optimum combination among various excavation and hauling units in a soil excavation process. Construction professionals often end up increasing the number of vehicles to manage unpredictable risk, which obviously ...
Abstract: Recent years, new construction systems as AMG (automatic Machine Guidance) and AMC (Automatic Machine Control) have been developed with the Global Positioning System (GPS) and made fit for practical use. Added to this, an indirect measuring theory to control the compaction extent and elasticity, which uses the acceleration data of ...
Abstract: Laser scanners are increasingly used to create semantically rich 3D models of buildings for civil engineering applications such as planning renovations, space usage planning, and building maintenance. Currently these models are created manually a time-consuming and error-prone process. This paper presents a method to automatically convert the raw 3D ...
Abstract: Building information modeling (BIM) is significantly influencing the way in which building and engineering projects are being planned, designed, constructed and maintained. It has been widely advocated that BIM will significantly reduce design and construction errors as well improve project cost and schedule. There is a lack of empirical research ...
Abstract: Obtaining and utilizing as-is information with 3D imaging technologies, such as laser scanners, during various phases of facility life-cycle is becoming common practice. Both during construction and facility operations information derived from laser scanner data can serve many purposes by providing accurate information about the conditions of the facilities at ...
Abstract: A navigation network is required for analysis in several activities during various phases of a building lifecycle, such as building accessibility analysis [22], building egress code compliance ([15], [11]), wayfinding [10], indoor positioning [18] and navigation guidance [18]. Various models for representing navigation networks have been proposed in literature [1], ...
Abstract: The main function of Building Information Modeling is to establish the common internal project-related in- formation for each stage for the whole life cycle of the building. User can fetch and store related information in this inte- grated platform. The data input by former user can be fetched by other ...
Abstract: This study is aimed at developing methods to optimize the material yield of drywall panels. In this paper, the authors describe the drywall panel layout optimization method which consists of the following three steps: first, to generate possible alternative patterns of drywall panel layout in a wall; second, for each ...
Abstract: This study provides an enhanced data model which can represents bridge components in a 3-D model hierarchically. The bridge components were identified through careful investigation of standardized classification systems of construction information, official dictionaries, and technical documents. The identified components were classified into spatial, physical and part elements and defined ...
Abstract: In order to improve the energy efficiency of buildings, many sensors have been being installed in buildings for monitoring temperature, humidity, electricity consumption, etc. In the Building Energy Management Systems (BEMS), it seems that visualization of the monitoring data is the main objective and that managers still have to find ...
Abstract: Vision based tracking can provide the spatial location of project related entities such as equipment, workers, and materials in a large-scale congested construction site. It tracks entities in a video stream by inferring their motion. To initiate the process, it is required to determine the pixel areas of the entities ...
Abstract: Pedestrian-oriented transportation has recently emerged as an important issue to supplement transportation modes as a method to reduce traffic accidents and environmental pollution. Compared to the increasing attention, practical studies considering the transportation environment in Korea are very limited. As a first step for studying the service level of pedestrian ...
Abstract: This paper discusses a framework for preventing equipment collisions. The framework is built upon the understanding of the patterns of equipment moves and strategies for real-time assessment of potential collisions that are results of a study conducted as part of this research initiative. It consists of three componentsreal-time data collection platform, ...
Abstract: Tracking of goods in production and distribution lines is required by manufacturers, retailers, and customers, as well. Companies usually control the quality of their production in the manufacturing phase, but products can also be controlled along the distribution and transportation steps, before they are delivered to customers. The main objective ...
Abstract: Temporary structure is prone to construction accident due to the dynamics in construction. Any unexpected adversary effect can cause construction failure in temporary structures. Therefore, the structure should be continuously monitored to understand its behavior during construction. The objective of this study is to test the feasibility of the ubiquitous ...
Abstract: The Ministry of Land, Infrastructure, Transport and Tourism of Japan has led the CALS/EC initiative to introduce ICT in public works since 1996. In line with the CALS/EC initiative, documents, plans and data associated with public works are to be delivered in digital form which is called as 'e-delivery'. Therefore ...
Abstract: Interface management plays an important role in construction management due to construction projects tend to be complex. A lot of organizations are joined and implement their own responsible activities. Furthermore, interface- related information is usually distributed in individual participants and not shared with others, and the information about interface problems ...
Abstract: Asset management has been truly a buzz word in recent years for infrastructure management professionals as a promising framework to achieve the optimal use of financial resources and to find smart and carefully crafted decision making processes on maintenance, rehabilitation and replacement activities. This paper addresses major theoretical issues that ...
Abstract: Complex construction projects are subject to numerous constraints that limit the commencement or progression of field operations. Effective management of these constraints is a key element in the look-ahead planning process to ensure a constraint-free work plan, and thus efficient field operations. While past studiesprimarily deal with a limited set ...
Abstract: Union-related conflicts, building trade unions jurisdictional disputes in particular, have a long history in the US construction industry since the establishment of the unions. Jurisdictional boundaries constantly change and craft jurisdictional privileges are occasionally encroached. The outcomes of these conflicts and confrontations are pricy because they affect local and regional ...
Abstract: Construction companies require a management system to increase efficiency and profit due to the competitive and globalized business environment. Changing business environment also requires prompt and flexible responses such as establishing management strategies, increasing value of intangible assets, and measuring and collecting real-time data. Specific approaches are also called for ...
Abstract: As to the current situation for the future problems about high-rise and medium-high-rise building in Kitakyusyu City, the regular inspections according to the Building Standards Law are well being done. However, the documents of the data are still stored in paper, and cant easily be accessed. The governmental system of the storage ...
Abstract: Urban renewals in an area or district consist of multiple facilities construction projects, and thus, should be managed as a program. Successful program management is enabled by seamless information of subprojects during its whole lifecycle. In the aspect of data management, program is differentiated with project by its own management ...
Abstract: Urban renewal mega projects consisting of a number of individual projects should be approached from the program level. BIM (Building Information Modeling) can feed information from product models of individual facilities to program management. In order to this end, the projects that are parts of a program have broken down ...
Abstract: Urban Regeneration, a program of land redevelopment in areas of moderate to high density urban land use, has complex procedure and consists of large sub-projects. This make a difficulty in understanding the overall work procedure and acquiring various information which are required to perform work. Especially, information and professional knowledge ...
Abstract: The construction business is gradually progressing towards the implementation of large-scale mega-projects for the creation of a synergy effect within limited grounds. However, various problems are manifesting, such as increased project costs, delays in the construction duration, and conflicts between stockholders. Thus, this study aimed to develop a web-based CBS ...
Abstract: The conceptual phase of capital projects is of strategic importance - an economic evaluation at this early stage is critical to the owners decision-making with limited information. The current study developed a comprehensive but practical system that can be used in such an early phase for economic evaluation of capital ...
Abstract: The planning stage is important for project development because the majority of important decisions are made at this stage. Having a well-defined project plan will reduce project uncertainty and increase the likelihood of the projects success. In other words, based on the level of project definition in the planning stage, ...
Abstract: The accurate registration of 3D point clouds with project 3D/4D models is becoming more and more important with the development of BIM and 3D laser scanning, for which the registration in a common coordinate system is critical to project control. While robust solutions for scan-model fine registration already exist, they ...
Abstract: This research developed an integrated radio frequency identification with building information model (RFID-BIM) to manage life cycle information related to open-building projects. The modularized components of open- building, including structural support systems and infill systems (e.g., partitions, facilities and pipes), which permits repetitive assembly and disassembly. Contractors prefabricate standard modular ...
Abstract: The growing interest in the industrialization of construction process; promotes opportunities for automation. Automation brings improvement in quality and productivity, while reducing workers exposure to hazardous work environments. The integration of robotics in interior finishing works, such as sanding and painting of drywalls is a relatively new concept. Progressing to ...
Abstract: The purpose of multi-tower crane motion planning is to find a collision-free construction process for multiple tower cranes operating in a construction site. This problem can be reduced to the path searching problem in high- dimensional space and an important amount of research related to the path search algorithm has ...
Abstract: The operation and management plan for a lift, an important factor determining work productivity on a high- rise building construction site, has long been considered to be less significant than those for a tower crane, which has resulted in a lack of studies of systematic operation planning for lift. Due ...
Abstract: This paper describes the ICT-based work management to enhance collaborative works and interactive communication, and to grasp significant information in order to support unmanned construction for post-disaster restoration. Firstly, this paper reports the unmanned constructions that have been and are being done in the Unzen restoration project. Secondly, are presented ...
Abstract: Scouring around bridge piers is the important safety issue of bridge management since it could lead to bridge slanting and collapsing. Since the mechanism of water flow around the pier structure is so complicated, which makes it is very difficult to develop a generic model to determine the scour depth. ...
Abstract: This paper presents the drive bearing evaluation system to quantitatively describe and evaluate driving peculiarities and styles regarding dump truck drivers in a haulage work. The drive bearing represents appearance and motion in driving. It would provide site-manager and resident engineers with quantitatively suitable indices to guide or instruct drivers under their ...
Abstract: Commercial buildings in metropolises are increasing in number or in sophistication or both. The facilities therein, including building works and services installations, entail effective maintenance to ensure satisfactory performance. Owing to uncommon use of fully-automated maintenance systems and concerns with disclosure of maintenance data, there are so far very limited research ...
Abstract: In present the unmanned construction system technology is adapted on initial operation against of the disaster occasion. For instance it has been used in Unzen. It depends on the scale and site situation of disaster which system should be applied to. A lot of remote control technology of operating construction ...
Abstract: Seepage of water through earth fill dam involves both the saturated and unsaturated flows of water. Unsatu- rated flow of water is often neglected because of the complexity required in solving the non-linear partial differential equa- tion involved. This paper presents a seepage analysis of water flows through the partially ...
Abstract: Due to the urgent need for a response to energy security, aging commercial buildings are required to conform to increasingly stringent environmental standards, particularly with regard to energy and water consumption. Solutions to reach the energy-related goals seem to exist. However, it is often difficult to gain synergistic benefits from ...
Abstract: Laser scanner data is increasingly being used for the detailed reverse engineering of buildings. This process is currently primarily manual, but recent research has shown that basic structures, such as walls, ceilings, floors, doorways, and windows, can be detected and modeled automatically. Building on this previous research, we focus on ...
Abstract: Nowadays, Terrestrial Laser Scanner (TLS) is a crucial device in order to acquire geographical data easily. In recent years, advances in accuracy and velocity have enhanced 3D models, but these stand-alone data do not provide the feature extraction. High density point clouds can be obtained with terrestrial laser scanner and ...
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Abstract: Steel bridge erection requires a series of processes in the construction site including shipping, sequentially lifting, and installing bridge components that are fabricated in the factory. Each process is critical and the risks are high due to the fact that conditions in the field are far more complex than in ...
Abstract: The use of Building Information Modeling (BIM) in the construction industry is on the rise. It is widely acknowledged that adoption of BIM would cause a seismic shift in the business processes within the construction industry and related fields. Cost estimation is a key aspect in the workflow of a ...
Abstract: Recent changes within the digital business environment have shifted construction industry toward a more adoption of new technologies as BIM(Building Information Modeling). However, adoption of BIM concept or 3D drawing means a lot of time and labors are needed to develop the 3D model of structure, also all participants in ...
Abstract: Due to the nature of construction projects, construction workers are constantly exposed to severe weather conditions which affect individual performance while performing duties. In addition, they are exposed to potential work hazards such as vibration, noise, fumes/odors, dust, mists, heavy lifting, working around power tools, or climbing of ladders. This ...
Abstract: This paper describes the development of an accurate long-distance position measurement system for construction pile using Laser Range Finders (LRF). The pile positioning and driving is the first work that is one of the important works to request the attentions in the building construction. In general, though the position of ...
Abstract: We investigate the feasibility and performance of the acoustic localization system using the acoustic fingerprint for asynchronous wireless sensor network (WSN) in urban environments and construction sites. The location estimation is calculated by comparing the acoustic fingerprint obtained from multiple sensors with those pre-computed in the database. To calculate the ...
Abstract: Current building climate control systems often rely on predetermined maximum occupancy numbers coupled with temperature sensor data to regulate heating, ventilation, and air conditioning (HVAC). However, rooms and zones in a building are not always fully occupied. Real-time occupancy information can potentially be used to reduce energy consumption. The paper ...
Abstract: The construction of box culvert for electric power transmission is increasing more and more, and the life extension of it is very important. The development of structural maintenance system in view of structural integrity evaluation is needed and widely discussed. Therefore, Laser Scanning System is developed for the inspection of ...
Abstract: Recently, novel methods using piezoelectric materials to monitor the strength development of concrete during curing process have been reported. However, these methods showed some limitations to obtain an absolute concrete strength in real-world. In order to estimate the absolute strength of the concrete, the concrete strength monitoring method using guided- ...
Abstract: This paper explores future requirements of project management information systems (PMIS) for professional construction management (CM) firms. Current constituents and effectiveness of CM-PMIS were analyzed first by surveying ten CM firms in South Korea. The composition of PMIS was quantitatively investigated by two dimensions; system configuration (e.g. in-house developed, ERP/ASP, ...
Abstract: This paper proposes more accurate methods for estimating the quality of service (QOS) in the pedestrian movement space by developing composite indicators that integrate both quantitative and qualitative factors affecting pedestrian satisfaction, rather than simply relying on quantitative measures like pedestrian flow rate and pedestrian delay, which has been a ...
Abstract: Urban renewal requirements have been important issues for local governments in Taiwan and therefore many urban renewal projects were initiated in the past few years and such demands will be increased in the future. According to past performance of urban renewal projects, projects suffered tons of problems, such as project ...
Abstract: In highway construction, Incentive/Disincentive (I/D) contracting provisions have been widely used to motivate the contractor for early completion of roadway construction in the United States. Although I/D provisions are one of the owners useful management tools, there is no systematic decision support system for the selection of I/D projects. This ...
Abstract: The construction industry has had considerable criticisms on inefficiencies in the quality and outcomes of professional services in project delivery. These criticisms have spanned design, estimating, procurement and construction, whilst a range of manifestations of inefficiencies have been reported in forms of errors, conflicts, omissions, mistakes and descriptive ambiguities. Although, ...
Abstract: Maintenance of subway tunnels and stations is one of the most difficult areas because of limited allowed inspection time and complex environment surrounding the infrastructures. Congested urban buildings and underground facilities make the construction and renovation of subway infrastructures more troublesome. In this paper, 3D information models including geometry models ...
Abstract: Assembly task is an activity of collecting parts/components and bringing them together through assembly operations to perform one or more of several primary functions. As an emerging and powerful technology, Augmented Reality (AR) integrates images of virtual objects into a real world. Due to its self-characteristic features, AR is envisaged ...
Abstract: Virtual Reality (VR) technology can facilitate training in construction equipment operations, as the cost for virtual training is lower and the practical hazard is eliminated. This paper presents a virtual training system (VTS) for construction excavator operators based on a game engine tool. The focus of this paper is not ...
Abstract: Nowadays, excavators play an important role in construction machinery. Among them, pneumatic excavators are suitable selections for some specific applications, because of their advantages. As a new trend, automation of excavation helps improving productivity, safety, and reducing of operation costs, consequently, making construction works become feasible even in hostile environment. ...
Abstract: With the increasing complexity of modern construction projects, maintaining operational safety while increasing the erection speeds of cranes has become an important issue. There are four major problems in current crane operations: (1) dynamically changing working environments, (2) limited viewsfor operators, (3) unclear communication between operators and other crew, and ...
Abstract: Data fusion can be defined as a process for integrating information from multiple and heterogeneous sources to obtain a composite and augmented inference about the state of an entity. Data fusion has been successfully applied in several fields. Its usefulness is becoming evident for the enhancement of automated and remote ...
Abstract: In this paper, we show that automated con -and deconstruction systems often are complex combinations of horizontal and vertical process, assembly and logistics sequences. The combinations of those horizontal and vertical sequences are exactly what characterize todays ship production. Shipyard technology is highly advanced and individual, customized ships are built ...
Abstract: In this paper we present a systematic method for the development of assistive environments based on geriatric assessment. The method is based on the assumption, that geriatric assessment can be used to describe scenarios and peoples individual skills and disabilities. To counterbalance disabilities and disorders and to bring people back ...
Abstract: A novel Concrete Printing process has been developed, inspired and informed by advances in 3D printing, which has the potential to produce highly customised building components. Whilst still in their infancy, these technologies could create a new era of architecture that is better adapted to the environment and integrated with ...
Abstract: In this paper, we address a new technique for automatic construction of steel structure in high-rise buildings termed RCA system (Robotics & Crane based Automated Construction System). RCA system can be divided into four core systems: 1) Monitoring and control system, 2) Material assembly system, 3) Beam assembly system, 4) ...
Abstract: The implementation of changes in construction projects often causes deviations from the objectives of the project client. One of the causes of this problem is that the tools currently used in projects do not support the identification of the consequences of a change before it is implemented in the project. ...
Abstract: Novel rock breakage techniques are becoming more viable. According to a major research report on explosive free rock breakage (EFRB) completed by the authors and others, the use of microwave energy was highlighted as a high potential technique in assisting the breaking of hard rocks. Microwave energy, as a thermal ...
Abstract: In the construction field, the bolting robot provides convenience and reduces a process time of assembling steel frames. When assembling steel frames, the bolting robot finds a bolt hole with the help of camera. If the light conditions are either too bright or too dark, however, it is hard to ...
Abstract: This paper highlights the limitations of the current applications of EVM method in forecasting project durations and introduces a novel concept, embedded in an integrated method, in lieu of those currently in use. The proposed method is designed to improve the accuracy of forecasting, and can be used as an ...
Abstract: This paper presents a novel framework for the integration and development of multi-agent based computation techniques to bridge the cyber/physical divide to enhance early stage design decision-making. Through the development of feedback loops of simulated occupancy behavior with design process, the framework presents a new paradigm for the integration of ...
Abstract: Construction accidents that involve cranes often relate to struck-by incidents, when the crane or its load is in too close contact with personnel, objects, and/or other equipment. In these incidents, limited or poor visibility of resources in the surrounding work space is often the cause of the problem. The result ...
Abstract: Lane closures during paving operation on roads usually restrict the continuity of paving operations and traffic flow, causing delay in paving time and delay of traffic flow time. This paper studies the resurfacing operation of highways using computer simulation. It describes the different types of traffic control devices. It also ...
Abstract: Construction estimates are a product of rigorous data analysis involving sophisticated data from a diverse range of multi-disciplinary sources. These data, often voluminous, are of different quality and are set to achieve slightly different goals which are not necessarily identical to the goal of the estimator. They are also engineered ...
Abstract: Maintenance strategies are typically implemented by optimizing only the cost whilst the reliability of facility performance is neglected. This study proposes a novel algorithm using multi-objective particle swarm optimization (MOPSO) technique to evaluate the cost-reliability tradeoff in a flexible maintenance strategy based on non-dominant solutions. Moreover, a probabilistic model for ...
Abstract: UbiConsEye a "construction site automatic control system" as a more convenient and construction of the surrounding terrain and varied spatial object features and locations to investigate and measure the actual construction work on site is in progress the field situation, the desired time and field installation of terrain and facilities ...
Abstract: The essential role of design process visualization is to capture and represent design information as well as the change of design objects to keep track of reasons behind decision-making activities. The most prominent benefit of BIM, among its wide-spectrum potentials, would be that it made possible to consider simulated building ...
Abstract: A large research program of digital product process has been active (2008-2012) in Finland. The goal of the program has been to increase customer orientation and productivity in company networks that design and deliver products, systems and services to global markets. For small and medium sized companies the developing of ...
Abstract: In the current way for construction cost estimating by using application software in China, the generation of bill of quantity usually needs plenty of manual work, because the design results cannot be used directly. BIM (Building Information Modeling) technology has provided a potential approach to generating bill of quantity more ...
Abstract: Climate changing has been a debated issue during the last few years. Some institutes in different countries have worked on this subject. Several future climate predictions have been generated. Each future climate is based on some assumptions and consequently has some uncertainties. These uncertainties are dragged to the building simulation ...
Abstract: Facilities management (FM) usually is difficult and complicated work. The facility staffs usually use paper or information system to record the facilities maintenance work. However, it is not easy for facility staffs to refer the traditional 2D CAD-based information illustration in the facility maintenance. Moreover, the information of same facilities ...
Abstract: In Taiwan, government procurement still relies on the traditional paper-based approach. Much information is mis-carried and then mis-interpreted when procurement information is transferred from that of paper to digital form. This creates design negligence, conflicts, mis-calculations, and inconsistencies among drawings, specifications, etc, which often cause change orders and contract disputes. ...
Abstract: As the IFC (Industry Foundation Classes) was introduced to exchange data between different BIM (Building Information Modeling) applications, construction professionals speculated how effectively it would solve the interoperability issues between these applications. Although previous investigations have demonstrated some limitations of the IFC in terms of exchanging the geometry of the ...
Abstract: The earthwork is essential procedure for all construction projects. Because of its importance in terms of cost and time, it should be managed effectively. In light of this, an automated excavation system is being developed by a research consortium formed in Korea to improve productivity, quality, and safety of the ...
Abstract: In recent years, global warming leads rainfall intensity stronger than before. Therefore, bridge management requires a reliable monitoring platform in current, to monitoring of bridge piers based on the variations of safety and river erosion, can be timely warming of the bridge damage, achieving the maintenance of bridges safety in ...
Abstract: This paper presents an innovative motion synthesis method for a quadruped robot, which involves a simultaneous transfer of two of the robot's legs, along with its body. Motion synthesis is carried out for straight-line and rotational motion. The solution to the inverse kinematics problem of the robot's legs is given, ...
Abstract: Recently, the construction industry beyond the traditional construction has increased automatic construction system because it is necessary to development for skilled labor shortage, productivity improvement, cost saving, quality improvement, safety concerns. However, current line stripe removing process both labor intensive and time consuming, employing a conventional grinding type manual machine. ...
Abstract: Large productivity drawbacks have been historically related to the inefficient flow of site resources. Increments in accrued costs and time and safety incidents result from the flow or movement of resources across the job sites. Even though the importance of this problem, there is not data to characterize the unnecessary ...
Abstract: This work is concerned on sensitivity analysis of semiautonomy algorithm of mobile robot to environmental sensors failures. The construction of the robot, semiautonomy algorithm and used sensors have been described. The algorithm bases on a reactive hybrid approach that merges data from different types of sensors and calculates resulting velocities. ...
Abstract: As the need to develop semiautomated and automated construction equipment increases in the construction industry, 3D work environment representation becomes increasingly important. Accurate, realistic, and rapid 3D representation of the work environment can be utilized for obstacle detection and collision avoidance by providing information about the state of the work ...
Abstract: This paper suggests advanced video processing methods for monitoring temporary structures to detect possible structural failures. The causes of failures are mainly related to human error, but the imposed loads of structural failures can also be caused by complicated events such as accumulated stress, deflection, wind, vibration, and lateral forces. ...
Abstract: Visual inspection is currently the major approach to evaluate the structural condition of a bridge. Some researchers have done good work on applying special inspection vehicles and robot arms to increase the efficiency and reachability of inspection process. However, such heavy equipment is highly restricted in working space and is ...
Abstract: Infrared thermography has proved to be an adequate technique for building inspection, as it can be used to determine energy efficiency through the measurement of heat losses, air leaks and infiltrations, and also to detect humidity areas. These parameters have great influence in energy consumption of buildings and in their ...
Abstract: This paper describes the smart structural system using smart materials for real-time monitoring and active control of bolted joints in steel structures. The goal of research is to reduce the likelihood of failure and the cost of maintenance of the structures. This concept combines impedance based health monitoring techniques with ...
Abstract: Detecting the health status of buildings is critical to produce correct diagnoses that could prevent many pathologies, as well as driving maintenance interventions through timely and well targeted operations. The constant innovation in the development of low power wireless sensing devices provides an unparalleled chance to develop efficient monitoring system ...
Abstract: This paper will discuss research on ant locomotion, especially in climbing adaptability and transversing steel bridge configurations, for the design of a climbing robot for inspection and condition assessment of complex steel bridge structures. Experiments in ant locomotion were performed and captured using high-speed video equipment capable of recording at ...
Abstract: This work presents a method to develop a system diagnosis regarding to shaft in journal bearing. The timely righteous estimation and judgment of the states is very important for the safe operation in time domain system. The synthesis of this problem presumes that all state variables are observable for concerned ...
Abstract: Since the first ISARC conference in 1984 and the formation of IAARC in 1990 there has been much development of interest in and understanding of automation and robotics in construction. The intelligent building [1] [2] and the learning building [3] are conceptual examples. Yiu and Yau [4] have published a ...
Abstract: With continuous advancements in the performance and economics of mobile/remote technologies and computer-aided manufacturing (CAM) systems comes an increase in the plausibility of semi-autonomous construction devices for deployment in response to large-scale humanitarian disasters. Robotic building-making machines capable of continuously and safely erecting replacement housing, urbanistic architecture required for resettlement ...
Abstract: Site layout planning is the task of determining optimum location for construction facilities on the site in order to increase productivity and safety of the project. Most of the existing studies assume all facilities are required for the entire duration of the project which is not a realistic scenario. More ...
Abstract: Technological and conceptual advances in fields such as artificial intelligence, robotics, and material science have enabled robotic architectural environments to be implemented and tested in the last decade in virtual and physical prototypes. These prototypes are incorporating sensing-actuating mechanisms that enable interaction with their users and surroundings in real-time. While ...
Abstract: Burj Khalifa, a skyscraper in Dubai, UAE, is the tallest man-made structure in the world. Its height reaches 828m but the taller super skyscrapers over 1 km have already been proposed. Tower crane is the key member for building such skyscrapers, which hoists heavy materials from the ground to the ...
Abstract: Mass Rapid Transit (MRT) station is the transport node, with population concentrated, closed-space, more gates this type of space a high risk of accidents hidden. The study based multi-agent simulation (MAS) system to create wayfinding simulation in MRT station, to create an effective evacuation simulation model. It can use to ...
Abstract: In this paper we propose a method for evaluating the dynamic blind spot of an operator of a construction vehicle by integrating static blind spot map of a construction vehicle with the head orientation of the operator. By computing the position and orientation of the equipment operators head, the field-of-view ...
Abstract: The unique, complex and interdependent nature of modern construction operations means that the use of previous datasets in simulating a new project may raise validity issues. To address this problem, the use of real-time data in simulation studies has been introduced and practiced in recent years. However, little is known ...
Abstract: Time-cost tradeoff (TCT) problems have been studied extensively in construction management literatures. TCT decisions, as combinatorial optimization problems, are difficult to find out their optimal solutions. However, Genetic Algorithms (GA) coupled with chaos and K-means clustering approach, named KCGA, can tackle these problems effectively. KCGA has successfully incorporated two opposite ...
Abstract: The construction site layout (CSL) design presents a particularly interesting area of study because of its relatively high level of attention to usability qualities, in addition to common engineering objectives such as cost and performance. However, it is difficult combinatorial optimization problem for engineers. Swarm intelligence (SI) was very popular ...
Abstract: This paper presents a study conducted in collaboration with large Canadian engineering, procurement and construction management (EPCM) firm to identify areas of improvement in the current process of progress reporting and forecasting project status at different targeted future dates. The study focused mainly on trending and time/Cost control of engineering, ...
Abstract: Taiwan is an island exposed to various natural disasters. Currently inventory and inspection data of the existing 28,000 bridges in Taiwan are managed by the Taiwan Bridge Management System (T-BMS). Thus, this research aims at developing a mechanism for fast and automatic evaluation of bridges abilities to resist possible damages ...
Abstract: In construction automation applications, registration between the 3D computer-aided design (CAD) model and the point cloud obtained by remote sensing technology is an important process such as progress monitoring and as-built modeling. However, the registration method to align the 3D CAD model and point cloud in construction automation has limitations ...
Abstract: Surveys found that large contractors replace approximately 10% of their equipment fleet units annually in North America. Cost minimization model is a commonly accepted method for equipment replacement which helps to identify these equipment units whose total owning and operating cost reaches their minimum point as candidates for replacement. While ...
Abstract: Batching production is to process products in lots rather than by the piece and most activities in repetitive construction projects are performed by batching production. Batch size is a key factor which affects duration of construction project and it is recommended to use small batch size for early completion of ...
Abstract: A lot of construction residual soils are generated each year in major construction projects in Taiwan. Currently a Construction Residual Soil Report System (CRSRS) is implemented in Taiwan. It requires to report every month on the sources and destinations, as well as the amount of residual soils. The local government ...
Abstract: Engineering consultation is a knowledge intensive industry. It operates by providing design-related technical services. Although design cost is relatively far less than construction cost, the decisions made in the design phase have a significant impact on the project, especially for large public construction projects. Therefore, this research focuses on establishing ...
Abstract: The interfaces during the construction phase usually cause reworks and conflicts among different project participants. In order to improve construction management, it is necessary to track and solved interfaces when these interfaces will influence the construction works. In practice, the interface information is usually available in related participants and few ...
Abstract: Schedule delays commonly appear in construction projects and result in delay claim progressively. Several studies have proposed various schedule delay analysis methodologies. By using the as-planned and as-built schedules, most previous studies focus on the impact calculation of identified delay events on project duration. They consider the schedule variances between ...
Abstract: Currently, the construction industry, which is already both high-innovated and sophisticated, is searching for new solutions in accordance with the incorporation of information technology. The objective is to create a high value construction industry through convergence with IT technology. However, there is no business model which is practical, profitable and ...
Abstract: Tools like ROS and Gazebo have become more important in light of new building concepts with embedded robotic systems. Over centuries buildings have always been viewed as static structures resistant to changes. However, today they are also viewed as kinetic structures capable of change and adaptation. The concept of kinetic ...
Abstract: As a continuation of the authors research presented in previous years (ISARC), these authors focus on the processing aspect of the 3D terrain models acquired from heterogeneous 3D scan sources. This includes a revision of the authors ICP-based merging algorithm to achieve better accuracy in the ever-changing shape of an ...
Abstract: An excavator is a typical hydraulic heavy-duty human-operated machine used in general versatile construction operations, such as digging, carrying loads, grounding and dumping loads. However, operating excavators in the hazard environment such as earthquake, nuclear decomposition etc is not suitable for human to operate on site. Therefore, automation in excavator ...
Abstract: Concrete needs long time (28 day) for curing to reach enough strength in construction site. Also, it needs various materials. Thus, most of the construction sites in Extreme Environment select to deliver the prefabricated concrete modules. To construct structures on the Moon one has to select proper materials considering safety, ...
Abstract: In recent years, the world has seen many natural disasters such as earthquakes, floods, and tsunamis. In particular, Japan experienced a very bad flood that damaged many bridges in Sayo, Shiso and Mimasaka along several branched rivers of the Chigusa and Ibo rivers in 2009. We need to develop a ...
Abstract: In this research, the Intelligent Construction that minimizes the damage was suggested. In this case, stress for the remains and direct cutting for the remains should be avoided to preserve the underground remains. The influence of the stress for the underground remains by the execution machinery was estimated by Boussinesq ...
Abstract: Intelligent excavator has four sensors which can detect the length of each cylinder and electronic valves which are used to control flow rate of hydraulic oil electrically. Intelligent excavator is controlled by the information from these sensors and control signals. Using the position control, excavator can work on the programmed ...
Abstract: One of the traditional methods to assess the quality of the coating on the steel bridge surface is calculating the ratio of rust to the total area of coated surface. In North America, digital image processing has been applied on quality assessment of steel bridge coating since late 1990s due ...
Abstract: Maintenance measures at infrastructural buildings such as bridges or tunnels in urban areas always have influence on the traffic flow. Finding a schedule that keeps this impact as low as possible by considering the mutual interaction between several road closures is a highly complex optimization problem. In a current research ...
Abstract: Road signs appear as one of the most important elements for safety purposes and their inspection is typically included in the road management systems. Nowadays, it is becoming more common the use of high performance vehicles to improve the efficiency of the road inspection works. They include sensors as laser ...
Abstract: In tunnel construction, overcut along with undercut estimation is one of the most important factors to be considered before proceeding to the next operation. It is currently analyzed based on sparsely sampled points surveyed using a total station, but not much time is allowed for surveying and analyzing for economic ...
Abstract: This paper presents the study on the effect of view distance and movement scale on performance of haptic based teleoperation of a sandblasting robot in complex steel bridge maintenance environments. The operational performance, measured by the Index of Performance (IP), is defined based on the speed and the control accuracy ...
Abstract: Availability of accurate location information of components decreases the search time and increases the chance of using shared resources. In our previously proposed framework, RFID tags are attached to components at an early stage of the lifecycle and their memory is used for various purposes throughout the lifecycle. In this ...
Abstract: In a recent decade, the GPS has been introduced to directly measure the displacements of super long-span bridges. However, due to its high cost, it is not appropriate to apply a number of GPS receivers in a super-long span bridge in order to measure the displacements through the overall bridge. ...
Abstract: This manuscript reports the findings of a research endeavor that has characterized the process to deliver detailed workshop and erection design documents for steel structures when outsourced to offshore design service providers, and has assessed the influence of these design processes on construction operations. The study has considered all aspects ...
Abstract: Recently, the curtain wall systems are widely used for the exterior walls of the buildings. In this regard, many studies on their cleaning and maintenance methods are being carried out. Now in order to review on the possibility of the attachment of the cleaning robot to the existing buildings, it ...
Abstract: This study is aimed to evaluate the engineered properties of cement-based composites which comprise polyolefin fibers and silica fume in the mixes. Material variables include water-cementitious ratio, dosage of silica fume, polyolefin fiber length and dosage. Compressive strength, splitting tensile strength, direct tensile strength, resistivity, rapid chloride penetration test and ...
Abstract: Using wood in construction is one of the best way to reduce the emission of carbon dioxide, because wood is material that fixes carbon dioxide in the long term. Japanese cedar grows up quickly, with low price, but it has been used unpopular in construction in Japan. Because it is ...
Abstract: This paper presents an Internet-based design collaboration of multi-disciplinary teams for the development of a Building Information Modeling (BIM) model. The network allows geographically separated design teams to work simultaneously on a single shared BIM model, using a distributed system to achieve design integration and conflict resolution. A synchronous collaborative ...
Abstract: One of the economical ways of transporting crude oil or gas over long distances is through onshore pipelines. Construction of onshore pipelines, involves considerable repetitive activities at various stages of the project. Cost incurred in the construction of pipelines depends on the length of the pipeline, the route and the ...
Abstract: Building Information Modeling (BIM) is not a novel concept, but there is a growing interest in design collaboration using BIM for construction management in the AEC industry. Recently, mobile computing and augmented reality (AR) become new variations on desktop computers since the combination can create ubiquitous workspaces for practices by ...
Abstract: With the increased awareness of energy consumption as well as the environmental impact of building operations, architects, designers and planners are required to place more consideration on sustainability and energy performance of the building. To ensure most of those considerations are reflected in the building performance, critical design decisions should ...
Abstract: The development of prefabricated facades, using architectural concrete panels or GRC panels, starts by cutting facade maps included in the architectural project. The aim of the architectural department is creating a design of the panels, taking care about the viability in terms of dimensions, weight, location, etc, and also looking ...
Abstract: Although many efforts have been exerted to increase safety on construction sites, it has never been easy to run a construction project with zero accidents. Previous research indicated that lessons learned from previous projects could help construction professionals prevent repetitive mistakes, but those lessons are based on individual experience, and ...
Abstract: Problems-based learning (PBL) uniquely attempts to scaffold praxis from conventional pedagogical approaches to practice-based learning. With a particular focus on construction education, this paper reviews a range of perspectives on the applications of PBL in different disciplines where it has been applied. It also draws a line between assessing students ...
Abstract: This paper proposes a genetic programming system (GPS) to both predict and program deep beam strength. The soft prediction is to provide estimated results for problems and the soft programming is to represent problems with meaningful formulas. In proposed GPS, two models of genetic programming (GP) and weighted genetic programming ...
Abstract: Typical engineering design processes involve an initial design, followed by iterations of analyses, interpreting and evaluating analyses results, and proposing new design or modifying existing design. The final design often results from intuitions obtained during this iterative process. Most computer-aided engineering (CAE) software focuses on the computer-aided analysis by advancing capabilities in ...
Abstract: 3-dimensional CAD is known to be an effective and convenient method of designing roads. But road design in Japan makes little use of 3-dimensional CAD. This is due to the fact that Japanese topographical surveys provide 2- dimensional topographical map data, and height data have to be newly input at ...
Abstract: This paper presents an experimental case study for managerial process standardization that is supported by theoretical foundations that authorize, integrate, and optimize organizational decisions. The concept of Managerial Process Standardization improves the procedural ability of a business organization to efficiently process, exchange, measure and reason about management decision-making. This paper ...
Abstract: This research is to identify impact factors in both cost and benefit aspects using quantitative techniques and then to determine their corresponding weights for sustainable road engineering projects. The impact factors are initially gathered from literature review and expert interviews, resulting in a total of 10 factors for questionnaire development. ...
Abstract: Lean construction theory is universally being applied in many actual projects for productivity improvement and process innovation. Most of proposed lean approaches, however, could not guide an actual implementation to the level of expected improvement, largely due to their inapplicability under in-situ circumstances. To reduce the gap between the theoretical ...
Abstract: Owing to the characteristics of construction linear projects, work efficiency is always addressed by prior researchers. However, most studies only consider single-skilled crews for linear projects, and the flexibility of multiskilling in construction is neglected. Recently, researchers have reveals that multiskilling in construction can increase the productivity, flexibility, and continuity ...
Abstract: Conducting a design project of a high-tech facility requires various specialties and rigorous user needs provided from the facility client. Sometime, project client will form a matrix organization with several interrelated functional and projectized divisions to decide those requirements and needs. However, an ill-defined matrix organization very likely causes late ...
Abstract: Schedule delays commonly appear in construction projects and result in delay claim progressively. Several studies have proposed various schedule delay analysis methodologies; however, most of the studies focus on the analysis of surface data (as-planned and as-built schedules), few of them on evaluating the effects of root causes, such as ...
Abstract: The demand of Liquefied Natural Gas (LNG) is on a steady increase, and the estimation of world LNG consumption will be doubled by 2030 compared with 2005. In the wake of increasing demand, numerous LNG plant projects are under construction and many new projects are in the planning stage. However, ...
Abstract: Background ozone, known as the ozone that occurs in the troposphere as a result of biogenic emissions without photochemical influences, has a close relationship with human health risk. The prediction of the background ozone level by an air quality model could cover a wider region, whereas a measurement method can ...
Abstract: Ever improving smart phones and mobile computing technologies provide engineers unprecedented opportunities to innovate the existing processes of construction projects. Researchers in the construction industry tried to use mobile computing technologies for enhancing the management process of construction project on site. This study aims to present a location-based construction site ...
Abstract: So far, exploration rovers on moon and mars limited there traverses to mostly flat and easy surfaces. On the other hand, there is Opportunity or the Mars Exploration Rover-B (MER-B) getting stuck in a 30 cm sand-dune on April 26, 2005. It took until June 4, 2005 for the rover ...
Abstract: In order to maintain security of the bridge and prevent life and property losses caused by earthquakes, typhoons, erosion and other disasters, it is worthwhile to explore the installation of monitoring and management system for bridges. However, in the current bridge management process, most of the discussion is divided into ...
Abstract: In the area of Robotics, the micro-walking robots play a very important role as it is required to perform inspection and maintenance inside pipelines or narrow spaces where people cannot enter. Extensive research work is under way in the design and control of the micro-walking robot. An exhaustive survey of ...
Abstract: In this paper, we develop an algorithm for avoidance of earth obstacles using model-reference impedance control for autonomous excavator. There have been many research in the past regarding autonomous excavation, which were only concerned about position control, force control and path generation. However in order to apply the control system ...
Abstract: Bayesian network (BN) learning is difficult task due to the limitation of available data in most engineering fields. On the other hand, BN which constructed bases on experts judgments is hard to evaluate and often inaccurate. In this work we introduce a novel method called expert-based structural EM (Ex-SEM) for ...
Abstract: When human operator is in the control loop of a robotic system, which operates in unstructured, complex and dynamic environments such as those in construction and steel bridge maintenance, human factors will have significant effect on the operational performance and control of the robot. This paper aims to investigate this ...
Abstract: In Korea Water Resources Corporation (K-Water) has seen four problems rising in four aspects of property management of approximately 1,200 buildings scattered through put to country. To solve these, ground data for repair and replacement works to be conducted for prevention and will be prepared and building maintenance system (hereinafter ...
Abstract: Due to a lack of standard operation procedures for tile alignment acceptance in Taiwan, subjective visual inspection becomes the main quality measure. Without quantitative specifications for tile alignment, inspectors can easily manipulate the outcome so that fine craftsmanship is not valued, resulting in great quality variation in tile installation works. This ...
Abstract: Recently, the steel cable used infrastructures are improved with progress in construction technology. In particular, the steel cable in long span bridges such as cable stayed bridges and suspension bridges are critical members which suspend dead load due to the main girders and bridge floor slabs. Damage at cable members ...
Abstract: There are a large number of high-rise buildings equipped with facades (curtain-walls) in modern cities. These facades must be periodically maintained with manual procedures that are costly and risky. For this reason, the interest in developing and employing service robots for the building maintenance has been increased. Automation and robotics ...
Abstract: The current ways to determine construction material quantities: calculating manually or using evaluation computer software, are time consuming and lack of accuracy. This study proposes an automatic calculation system to compute construction material quantities using a three dimensional architecture model based on CAD image files. The proposed system reduces the ...
Abstract: High-rise apartment projects in Korea have been built up to twenty stories with three to fifteen hundred multi-family units. When these projects are under construction, operation of lifting equipment such as tower cranes substantially influences project costs and scheduling. In other words, the operation of an appropriate crane based on ...
Abstract: Up to now there are robots specializing in stationary industrial operations. The building industry is a highly diversified and dynamic branch and, therefore, robotic systems are not used on the construction site during the building process at all or in a very limited way to handle loads. There exist robotic ...
Abstract: A manipulator for remote duplication of an operators arm motion is presented. The focus of design is on the economic efficiency with limited payload, speed and accuracy ranges for a given application. The arm has eight degrees of freedom with upper arm, elbow, lower arm, wrist and end effector. The ...
Abstract: Construction workers are usually engaged in performing simple, repetitive motions using heavy material and tools in an uncomfortable posture and an unstable environment. These characteristics of construction work cause too much load to be placed on specific parts of the bodies of construction workers. Recently, the rapid pace of work ...
Abstract: There are two essential management objectives in the construction industry: improvement of construction speed and reduction of materials used. A representative attempt to achieve these objectives, modular housing technologies have been actively applied in many developed countries, including Japan. Modular housing is a method by which a house is assembled ...
Abstract: The construction of high-rise buildings is currently on the rise worldwide, and with 5 construction projects currently being promoted in Seoul to build higher than 100 stories, Korea is no exception. However, there are different considerations for the maintenance of such high-rise buildings, not to mention the construction process, than ...
Abstract: This study presents the power assistance system of working suit type for heavy worker in construction site of steel bridge and high building. The heavy worker carrying several tools such as hammer, grinder, window frame and window glass should be stayed to do handling work in closed working space or ...
Abstract: This paper deals with robust position control of electro-hydrostatic actuator (EHA) systems with system uncertainties. EHA systems compared with conventional hydraulic actuator (CHA) systems are controlled by electric motor directly connected to bidirectional pump and its size is much smaller due to the component integration such as a pump, a ...
Abstract: To develop an unmanned automatic excavator system the control performance of hydraulic actuators should be guaranteed. However, hydraulic actuators with single rod cylinder have inherently severe nonlinearities that significantly affect to the command following performance of end-effect. PID control system widely used in industries is not proper to compensate the ...
Abstract: Time-varying sliding mode controller(TVSMC) with fuzzy algorithm for an unmanned automatic excavator system is proposed in this paper. Proposed control system is induced from dynamics of 3-link excavator that is boom, arm and bucket. To design the proposed control system, the main structure of controller is based on sliding mode ...
Abstract: In order to perform maintenance on the outer walls of a high-rise building, including sweeping, painting and repairs, a device that enables the easy attachment/detachment of working equipment such as a gondola to the outer wall of a building is necessary. Though vacuum suction pads can be used to fasten ...
Abstract: Though vacuum suction pads are able to fasten items of working equipment such as gondolas easily and without causing damage to a buildings outer wall, their necessary suction force should be designed by considering various conditions such as wind force, the loads of each item of working equipment, and suction ...
Abstract: The research of automation and robotics in building construction industry could improve working conditions through applications which create safety hazards for humans. In this paper, we propose an approach to sense a gondola robot system using a vision camera. To control a gondola safely and accurately, some parameters should be ...
Abstract: Current construction project planning tends to be made based on a planners experience, opinion, or equipment suppliers technical support. Furthermore, there is inefficiency and error occurring due to lack of materials for project planning, easy-to-use guidelines or tools. Construction planning needs to accommodate predicted scheduling and be regularly modified to economically ...
Abstract: The Honam High-Speed Railway Lot No.4-2 consisting of 6 bridges including the arch bridge, the extra- dosed bridge and 2 tunnels with a total length of 9.38km and the whole construction work should be completed within 31 months only. In order to control the detailed cost and the construction process ...
Abstract: The construction industry consists of various and massive architectural information as an architectural process includes a variety of design stages with cooperation of many disciplines. A Building Information Modeling (BIM) serves as a shared knowledge resource for information about a facility forming a reliable basis for decisions during its life- ...
Abstract: Overseas construction markets reignited since 2003 overcoming the global economic crisis, while construction markets are growing in Asian developing countries such as Middle Eastern region, China, Philippine, etc. Many of Korean builders operating in such countries are carrying on abroad with around half the total construction orders. Most construction works ...
Abstract: The study proposed a maintenance rating program (MRP) in Taiwan which combines the methods of DEcision MAking Trial and Evaluation Laboratory (DEMATEL) and Analytic Network Process (ANP) to evaluate maintenance activities accurately. In the view of the provincial and county roads in Taiwan, DEMATEL was employed to compute the effects ...
Abstract: Compared with the method of predicting the detailed construction cost based on the information of the detailed quantities derived from the completed work drawings and specifications, the method of predicting the approximate estimate based on facility specification or approximate design information, etc. at the stage before the drawings and specifications ...
Abstract: The repetitive occurrence of similar accidents is one of the most prevalent features of construction disasters. Similar accident cases provide direct information for determining the risks of scheduled activities and planning safety countermeasures. Researchers have developed many systems to retrieve and use past accident cases. However, this research has ...
Abstract: In this paper, the crash analysis was performed of upper body and sub frame for NEV electric car. NEV vehicles front platform assembly behavior when subjected to a frontal crash is described in this article. The frontal crash of the integrated car system is successfully simulated in LS-DYNA. According to ...
Abstract: The safety diagnosis of buildings is very important for continuous maintenance of them. However, the current safety and precision safety diagnosis in maintenance have focused on inspecting the first and second grade facilities. Considering that middle and small-size buildings except for the first and second account for 99.2% of whole ...
Abstract: An earthwork for land development projects, which possesses around 20% of the total project cost, consists mainly of simply repetitive tasks such as loading, hauling, dumping, and returning and depends largely on heavy construction machines. The goal of earthwork planning is to minimize the project cost and duration by determining ...
Abstract: The recent development of ubiquitous computing has resulted in an improvement of management performance through real-time monitoring and control. Especially, in high-rise building construction with reinforced concrete structures, form work requires effective management systems to reduce the duration and cost of structural frame work and subsequent activities. Recently, a concrete ...
Abstract: Air springs are prevalently used as suspension in train. However, air springs are seldom used in automobiles where they improve stability and comfort by enhancing the impact-relief, breaking, and cornering performance. Thus, this study proposed a new method to analyze air springs and obtained some reliable design parameter which can ...
Abstract: Hoisting planning for systematic and efficient vertical transportation is one of the key factors for successful completion in high-rise building construction. However, despite this importance, minimal research has been carried out for predicting hoist time, which is a key player in hoisting planning. Therefore, this study proposed a prediction model ...
Abstract: From the end of 20th century, developed countries are making efforts to regenerate old downtown areas of their cities. Urban regeneration program can be simplified as the demolition of existing deteriorated buildings and the construction of multiple new facilities. To maximize the benefit of the construction program within the restricted ...
Abstract: Though remodeling and new construction of college facility are increasing in private colleges as a way to improve educational environment and to secure financial resources, operational soundness and financial stability of college facilities are relatively low in comparison to increase in facility investment because of frequent design changes caused by ...
Abstract: In the 21st century, knowledge has become one of the management paradigms which determines the organization competitiveness. Therefore, construction companies strive to strengthen the capacity of organization by introducing the knowledge management. However, the current knowledge management system applied in the construction industry is operated without a business process. Hence ...
Abstract: Recently, the abnormal climatic changes have been frequently occurred all over world. Construction work is heavily affected by weather because it is mostly performed outdoors unlike other industries. But construction schedule management is not considered by weather in many construction sites and construction work relied on the experience and subjective ...
Abstract: In Japan, over the last 50 years, quality management of construction projects has come to involve many important issues. Moreover, it is now emphasized in all area of manufacturing. However, it may prove difficult or impossible to assure satisfactory quality, relying only upon laws and regulations concerned with quality measurement. ...
Abstract: This paper describes a method for the localization of wireless mobile clients in multistory buildings using a wireless LAN system. The method uses public wireless LAN access points for users and robots that are settled at many places in a multistory building. Data on the physical position of personal electronic ...
Abstract: The Wireless Sensor Network (WSN) technology has been employed in the field of civil engineering especially in structural monitoring and construction safety. To be used in construction safety, the time-synchronization within the sensor network is required to obtain important correlations between events, such as the prevention of equipment collisions. In this work, ...
Abstract: In recent years there has been increasing interest in innovative design and construction of sustainable high- performance buildings. Among the innovative techniques proposed to increase building performance is to dynamically sense, control and manage the ambient building environment, such as temperature, humidity, air quality, artificial lighting, etc. through the installation ...
Abstract: Transportation infrastructure plays an important role in national development. With such unique geographic environment, bridges become the majority of transportation infrastructure and building the bridges is regarded as one of the most important public construction projects in Taiwan. However, Taiwan is also known as its natural disasters such as earthquakes ...
Abstract: The objective of an urban regeneration project is recovery of urban utilities through a physical, environmental, cultural, industrial and economic regeneration. The current paradigm of urban regeneration is not a simple redevelopment as physical redevelopment or improvement. Urban Regeneration is an overall development including a central commercial capacity and business ...
Abstract: Construction process is divided into pre-design and planning, design, construction, management. Pre-design stage is very important considering the influence on other subsequent works. Recently, it is being increased that the importance of information management and decision-making support at the pre-design stage, and related researches are being conducted. As part of ...
Abstract: This study is to find out residential satisfaction, moreover, the effect in corporation performance based on a previous research of the influence on consumers behavior by consumers recognition of the quality of residential environment of apartment house. Further, the empirical study provides a theoretical model comprised of 10 research hypotheses of ...
Abstract: New smartphones generation provided with webcams, tactile screen and internet connection allow adaptation of new technologies and computer applications to this kind of devices. Augmented reality technology becomes widespread and more used each time by everyone. Augmented reality (AR) seeks creating virtual objects in user interface which superimpose over the ...
Abstract: It is almost impossible for road engineers to monitor every road and to successfully and promptly maintain and rehabilitate any defects that have been identified. Therefore, the monitoring and reporting of defects in road systems contributed from the public are indispensable. Location-based service (LBS) has been applied to mobile devices ...
Abstract: At this time in Japan, buildings built about 40 to 50 years ago are aging, and demands for demolition or re- newal are increasing. Asbestos materials were used in many parts, and for many purposes in these buildings. But now, us- ing asbestos and asbestos containing materials is prohibited by ...
Abstract: Recently, an increase in the number of construction of long span bridges like a cable-stayed bridge has necessitated the development of technologies for long-term maintenance works and safety of vehicles using such bridges. A lot of researches on application of cutting-edge IT technologies and robotics in the civil engineering field ...
Abstract: In this paper, we present a legged field robot with a biologically inspired concept like the leg structure. The robot has a feature of only hip-joint actuators for the simplicity of mechanism and control. One of the robot's objectives is to achieve the ability to travel quickly for the reconnaissance ...
Abstract: This research is a part of Intelligent Excavation System (IES) Development Project which aims the autonomous excavator for earthwork. The developed module focuses on measuring real-time productivity for Task Planning System(TPS) of the IES. This module merges 3D data obtained using two different 3D imaging systems : The 3D laser ...
Abstract: In this paper, we propose a wheel-based cable climbing robotic system which can climb up and down the vertical cylindrical cables in the suspension bridges. Firstly, we develop climbing mechanism which includes wheels driven by motors and adhesion system.In addition,we propose a special design of adhesion mechanism which can maintain ...
Abstract: Efforts to improve building construction speed have led to a new construction type, called the modular housing. Designs and construction technologies for the modular house have been actively studied in several countries including Japan, and the technologies have also spread. A relative newcomer to this field, Korea intends to develop ...
Abstract: In this paper, we discuss an intelligent bridge inspection system by using a Robot and IT technology which enables acquiring images of the bridge condition for managing the safety of its structure. The purpose of this study is composed of two parts: 1) the image acquisition of a bridge structure ...
Abstract: The robotic high-rise building maintenance system is an automated system of performing maintenance works on the outer walls of high-rise buildings, including cleaning, coating, and inspection. This study, a robotic high-rise building maintenance system is proposed that overcomes the conventional limitations and introduces an algorithm for contamination measurement that uses ...
Abstract: The controllability of active suspension system in automotive vehicle is strongly affected by the performance of pressure control valve. In this study, a new mathematical model and simulation model of the hydraulic pressure control valve of automotive is proposed. And proposed model of the hydraulic pressure control valve are analyzed. ...
Abstract: With the recent development of information technology (IT), automation is being introduced in the construction sites as well as in plants. This study was conducted to address autonomous driving in the outside environment as part of the construction automation task in the advanced fusion construction research project of the Ministry ...
Abstract: Nowadays, many safety accidents are occurring at construction sites. Excavation accidents that concern construction machines are among the leading safety hazards in construction accidents. Therefore, the need for excavation experts is increasing. In this paper, an excavator simulator is presented for training human operators and for tasking in virtual earthworks. ...
Abstract: The intelligent excavating system (IES) aims for the full-scale automation of the excavation process that includes a series of tasks such as movement, excavation, and loading. The core elements of the IES include excavating robots, 3D modeling of surrounding terrains, and the technology for detecting objects accurately (i.e., for detecting ...
Abstract: Due to the development of construction technology, there is a considerable increase in the number of skyscrapers in the world. Accordingly, there are rapid growing requests about maintenance systems such as cleaning, painting, and monitoring the processes of facade in high-rise buildings. However, it is extremely dangerous working the walls ...
Abstract: As residents and building owners demand maintenance that is required to achieve sustainable building performance, efficient building management methods are required. Even though the demand for maintenance systems is increasing, current maintenance work for high-rise buildings mostly uses conventional ropes and gondolas that pose a high risk of accidents and ...
Abstract: Safety inspection of concrete structures should be strictly carried out since it is closely related with the structural health and reliability. However, it is difficult to find cracks by a visual check for the extremely large structures. So, the development of crack detecting systems has been a significant issue. Final ...
Abstract: Owing to the increasing number of high-rise buildings and large glass facades and the resulting problem of safe and effective maintenance, many trials have taken place in the last few years to develop automated cleaning systems. So as to guide the robots movement on the facade, this study proposes the ...
Abstract: As technology progresses and software developers increasing effort, we can foresee that the bi-directional procedures between design/analysis platforms will be shorten dramatically over time to improve the efficiency of building model analysis. But how about the decision-making phase that even before models been built for analysis? By adopting the Space ...
Abstract: A large variety of metal forming processes is required in manufacturing for automotive applications. Traditionally the design process for metal forming tools is based on trial-and-error and on the skill of experienced die- makers. This approach results in high development cost and long lead-times. Especially spline of drum clutch hub ...
Abstract: The design engineers for harbor structures normally learned the trades from their company or self-educated at the beginning of their career. Due to this unsystematic education approach, each design company has its own design format and accumulated design databases. Therefore, the objective of this study is to develop a design ...
Abstract: Mooring and Towing Fittings mean various devices and fittings to safely fasten vessels to quays, jetties, sea- floating buoys. etc. They include devices such as mooing winches and capstans, fitting such as chocks, fairleads, guide rollers, bollards, and bitts, and the seats and reinforced parts of vessels such fittings are ...
Abstract: This paper presents the energy saving methods and energy storage system to be required for the highly efficient cargo system in container terminal. The best proper method of energy saving is decided by the operation method of cargo handling system and the saving effect of this method is studied. The ...
Abstract: Great efforts have been made worldwide to reduce the Green House Gas (GHG) emission following the "Kyoto Protocol" declared during the United Nations Framework Convention on Climate Change in 1997. Many industries have restructured to meet the standard set by the Protocol. In construction industry, however, no clear guidance has ...
Abstract: Major sources of CO2 release caused by anthropogenic activities include fossil fuel combustion, cement production, and forest clear cut. The first two sources have been recognized as important in the construction industry; efforts have been made to find the causes of and the solutions to the emissions in the fuel ...
Abstract: The unsold new housing stock is an important phenomenon that affects the financial status of construction companies in the housing market. It gets impacts from various variables constituting the housing market. This study identified the causes of 'unsold new housing stock' by analyzing the correlation between unsold new housing stock ...
Abstract: This study was carried out being focused on formworks in order to provide a way to estimate reasonable cost of construction works in Korea. The scope of the study was set to the period after 2004 when actual cost estimating system was introduced and a survey of specialists was conducted. ...
Abstract: There are many variations and risks in construction work and the risk is getting increased in accordance of big scale, variation and complexity for the construction work. If the process management is not planned thoroughly, it affects the construction period. . The delay of construction period causes the increase of ...
Abstract: Construction-IT convergence is necessary considering the challenges faced with the construction industry such as reduction of carbon bi-products and energy saving. To promote the convergence, having a proper business model for bringing the best services to its clients is very important. This study aims to present an Evaluation Index, as ...
Abstract: The objective of this study provide a conceptualization for the automation of lift car operations on high-rise building construction sites, in order to build high-rise building effectively and make a proper lifting plan. We got the week point of a hand-operated lift car, and got problems of an automatic lift ...
Abstract: The u-City project proceeds through combining urban development with IT technology. The u-City project has more risks because it has more complexity and diversity compared with normal urban development. Therefore, the u- City project needs a comprehensive risk management system which can control risk factors quantitatively. The current study proposes ...
Abstract: Recently, CBD(Central Business District) mixed-used regeneration programs(mega-projects) composing various types of residential, commercial, office, and cultural facilities are being promoted to maximize land and space utilization in the inside and outside of the country. It has advantages that meet the functions and the needs of each facility and create new ...