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2000 Proceedings of the 17th ISARC, Taipei, Taiwan

How to Establish Environment in Construction-An Illustration of Taiwan High Speed Rail Project

Ching-Lung Liao


Keywords: No keywords
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Opportunities and challenges in the implementation of Taiwan high speed rail project: a private sector perspective

Nita Ing


Keywords: No keywords
Fulltext not available (yet)

Automated Rebar Constructibility Problems Diagnosis: A Concept-Proving Prototype

Ronie Navon, Aviad Shapira
Pages 1-6

Abstract: The paper describes a rebar constructibility model, which was developed in an object-oriented graphic environment. The model is intended to be used during the design phase to automatically diagnose potential rebar-related constructibility problems (the Diagnosis Module), as well as to offer solutions and implement them (the Correction Module). The Diagnosis Module was implemented first ...

Keywords: automation, constructibility, construction, design coordination, reinforcement, reinforced concrete

Generation and Optimization Method for the Assembly Order of Members in Wood Structure

Masao Nakajima
Pages 1-10

Abstract: To evaluate how the detail design of the building construction system influences the outputs of the system such as the construction steps and the construction period, it is necessary to know the order in which building members are assembled. This paper presents a method for generating and optimizing the assembly order of building ...

Keywords: building construction system, assembly order, CAD, knowledge-based system, Genetic Algorithms, wood structure

Simulating Equipment-Based Construction Operations Using Virtual Environments

Khalid Naji
Pages 1-7

Abstract: Construction simulation using virtual environments is a hot topic that gained attention during the last ten years. Although there is an ongoing research investigating the effectiveness and usefulness of virtual environments in construction simulation, this technique never reached the general construction industry. This is mainly due to two reasons: the lack of knowledge ...

Keywords: virtual reality, virtual environment, construction simulation, computer aided design

Automatic Control System of the Degree of Compaction of a High Lifted Decomposed Granite Soil for a Vertically Vibrating and Jumping Tracked Vehicle

Tatsuro Muro, Dang Thai Tran
Pages 1-6

Abstract: The purpose of this paper is to establish a new automatic control system of the degree of compaction of a high lifted decomposed granite soil i.e. the accurate controlling method of the number of dynamic compacting passes of a vertically vibrating and jumping tracked vehicle mounted with a vertical oscillator. In these tests, ...

Keywords: degree of compaction, soil, vibration, jumping, tracked vehicle

A Database for Selection of Rehabilitation Techniques of Sewer Pipes

Tariq Shehab-Eldeen, Osama Moselhi
Pages 1-6

Abstract: Automation in construction gained sizable momentum during the last decade and considerable efforts have been made to benefit from this emerging technology in reducing cost and improving quality of work performed in this industry. This is particularly true in inspection and maintenance tasks of infrastructure facilities. This paper presents an automated system for inspection ...

Keywords: Rehabilitation, Sewers, Automation, Defect detection, Trenchless technology

Automated System for Cost Estimating of Earthmoving Operations

Osama Moselhi, Mohamed Marzouk
Pages 1-6

Abstract: This paper presents an automated system, designed to assist contractors in estimating time and cost of earthmoving operations utilizing object oriented simulation. The proposed system consists of two main modules (simulation/optimization, and reporting), equipment database, and equipment cost application (ECA). The system is developed in Microsoft environment and its components are integrated through a ...

Keywords: earthmoving operations, object-oriented simulation, equipment hourly cost, optimization, equipment database.

Influence Flexibility Technologies Construction on Process Indutrialization and Robotics in Construction

Ratko Mitrovic
Pages 1-5

Abstract: In this work, we will present an original classification of building technologies being used for high-rise building facilities. For suchlike building technology presentation, we will define flexibility of technology as a substantial criterion for application of industrialization and robotics to them and present process optimization for difference kind construction technologies with use in south-east ...

Keywords: No keywords

Force Sensor for Construction Machines by They Hydraulic Driving Cylinders

Fiorenzo Malaguti
Pages 1-5

Abstract: The paper considers force sensor based on the hydraulic cylinders used to powered the arms of construction machines from dynamics point of view, to the aim to sense interaction between the tool of machine and operating environment, in particular between soil and excavator robot. The regression matrix method is used to identify static dynamic ...

Keywords: interaction force sensor, hydraulic cylinders, weighting system, machine dynamics

Development of Virtual and Real-Field Construction Management System in Innovative, Intelligent Field Factory. Part 2: Development of Virtual Construction Field

Yoshio Maruyama, Junichi Yagi, Hiroo Takada, Kinya Tamaki
Pages 1-6

Abstract: Prototype system of virtual construction field was developed in this study. Making the production plan of architectural construction was attempted by using the system. As a result, it was confirmed that the virtual construction field was effective to the making of the production plan.

Keywords: construction management, planning, construction simulation, virtual reality

Fuzzy Neural Network Model for Mark-Up Estimation

Li-Chung Chao, Min Liu
Pages 1-6

Abstract: Mark-up estimation involves many uncertain and complex factors making it difficult to model them using conventional mathematical methods. Artificial neural networks (ANNs), which can adapt themselves to training data, have recently been applied to mark-up estimation. However, there are two major drawbacks of this application; firstly, an ANN system is unable to explain why ...

Keywords: mark-up, neural network, fuzzy logic, fuzzy neural network, construction management.

Automated Design of Wastewater Collection Systems Using Genetic Algorithms

Lou Y. Liang, Russell G. Thompson, David M. Young
Pages 1-5

Abstract: The size, shape and slope of pipes are major components of the overall cost of wastewater collection systems. In the past, designers have used charts and specialized rules to determine the size, slopes and materials when designing wastewater collection networks. However, genetic algorithms (GA) provide powerful technique for automating the design and minimizing the ...

Keywords: genetic algorithms, constraints and wastewater collection system design

Integrating the Efforts of Off-Site Production with On-Site Construction

Roine Leiringer
Pages 1-6

Abstract: A study for the Swedish government on a ?design and build? project has examined the underlying process and has found a series of inconsistencies between what is claimed and what appears to have happened. The project could not regarded as having been especially complex. Even so, detailed analysis using computer modelling techniques has shown ...

Keywords: Project planning, computer-based modelling, off-site production, workflow.

IT System for Electronic Building Plan Checking

Yue Choong Kog
Pages 1-6

Abstract: An integrated network is being developed over the next few years for the construction and real estate sector in Singapore to improve its productivity and competitiveness. Electronic plan checking system is one of the IT system of this integrated network. Its aim is to automate the process of checking of building plans for ...

Keywords: Information technology, integrated network, electronic plan checking, Product Modelling technology, Artificial Intelligence, Feature-Based Computer Aided Design, collaborative design, project website, electronic procurement

Development of an Open and Modular Control System for Autonomous Mobile Building Robots with Flexible Manipulators

Klaus Feldmann, Markus Koch
Pages 1-6

Abstract: Rationalisation efforts in the construction industry are more and more affiliated with the attempt to automate the building processes. This requires mobile systems, which can move themselves independently to their place of work and execute their job there. Apart from the development of suitable planning tools for the application of these systems, their control ...

Keywords: mobile construction robot, mobile robot, open control system, modular control system, flexible manipulator, parallel manipulator

Chances, Obstacles and a Possible Trend of Automation in Construction from the Point of View of the German Construction Industry

Klaus Feldmann, Markus Koch
Pages 1-6

Abstract: In this article the results of an opinion poll analysing the basic attitude of the German building industry towards automation in construction are presented. Based on general fields of applications for automatic control engineering in building industry, chances and obstacles are pointed out and a possible trend of future building automation is investigated. It ...

Keywords: trend of automation in construction, chances of automation in construction, obstacles of automation in construction, assembly of suspended ceilings

Development and Application of Column-Field-Welding Robot

Kiwamu Nisita, Motoaki Itou, Satoshi Miyaki
Pages 1-7

Abstract: Column-field-welding robots are generally used in disarranged circumstance of the building site and have to be transferred horizontally and/or vertically within the site. Column-to-column welding joints are full penetration single bevel grooves, which require a high level of welding techniques and need an operation software with huge data. Under these strict conditions, welding works ...

Keywords: column-field-welding robot, full penetration single bevel grooves, man-machine system

Agent-Based Approach for Intelligent Automated Landfill Operation System

Sung-Keun Kim, Kyo-Jin Koo, Jeffrey S. Russell
Pages 1-6

Abstract: Workers and operators in sanitary landfill sites face the health risk due to the constant exposure to the toxic solid, liquid, and gaseous by-products of the waste materials. One solution to this problem is automation technology that can increase productivity and quality as well as safety. But, developing an automated system for landfill ...

Keywords: Automation system, Landfill operation, Multi-Agent, Task allocation

Innovative Testing System of Construction Aggregate Using Laser Profiling

Hyoungkwan Kim, Carl T. Haas, Alan F. Rauch, Craig Browne
Pages 1-5

Abstract: A Laser-based Aggregate Scanning System (LASS) is being developed at The University of Texas at Austin. Using a computer-controlled linear motion slide, a laser line scanner is moved over aggregates spread out on a scanning bed to rapidly gather accurate, three-dimensional data. To analyze the raw data effectively, morphological methods and a group texture ...

Keywords: aggregate, automation, group texture analysis, laser profiling, LASS, morphological method, neural network.

Man-in-the-Loop Training Simulator for Hydraulic Elevating Platforms

Erno Keskinen, Mika Iltanen, Teemu Salonen, Sirpa Launis, Michel Cotsaftis, Jorma Pispala
Pages 1-8

Abstract: Hydraulic elevating platforms are commonly used machinery in assembling outside covers to buildings, washing windows etc. Evacuation of people from high places as well as fire-fighting are also well known service areas of elevating platforms. A team of researchers, designers, and end-users has introduced a concept of a man-in-the-loop simulator to be used ...

Keywords: Hydraulic booms, elevating platforms, training simulators, virtual environments

Computer-Aided Planning in Construction Evaluations of Alternatives in Construction Planning

Naruo Kano
Pages 1-8

Abstract: In this paper, the author developed five evaluation models for selecting among alternate construction methods based on past construction records and studied the reliability of the models by applying each to excavation retaining wall construction. The author also proposed the Majority Evaluation Method to improve the reliability of these evaluation models and employed computers ...

Keywords: Construction Planning, Computer-Aided Planning, Construction Methods, Excavation Retaining Wall, Majority Evaluation Methods

Radio Frequency Identification Application for Constructors

Edward J. Jaselskis, Tarek El-Misalami
Pages 1-4

Abstract: This paper describes the use of radio frequency identification (RFID) for use by constructors as a way to improve the efficiency of construction site operations. An overview of the technology is initially provided. Next, a pilot test related to jobsite material receiving was conducted as part of a Construction Industry Institute research project to ...

Keywords: Radio Frequency Identification, Tags, Transponders, Material Receiving

Accountability of Japanese Construction Industry

Takashi Kaneta, Masaaki Kanoh, Shuzo Furusaka, Kouji Ichikawa, Toshimasa Okuma, Kenji Kimoto, Shigehide Sakurai, Ichiro Nakaoka, Jea Sauk Lee
Pages 1-6

Abstract: This research aims to promote accountability in Japanese system of project management including the phases of architectural design and building construction. In introducing automation or robotics into construction industry, Japanese system is often regarded as characteristic one that cannot be accommodated to the systems of foreign countries. It is sometimes taken up as the ...

Keywords: accountability, construction industry, building system, procurement, general contractor, contract.

Construction Site Work Environment

Fuziah Ibrahim
Pages 1-5

Abstract: "To err is Human" . The basis of the discussion of the Man-machine Interface is due to imperfection of the human. Any human being make mistakes. Mistakes make at construction sites could be fatal. The management of the safety of the sites is important aspect in the construction industry in ensuring the safety ...

Keywords: No keywords

Information Technology in the Construction Industry: Managing Projects in the Age of the Internet

Scott Hudgins, King-Le Chang
Pages 1-5

Abstract: Information technology in the construction industry opens new frontiers redefining an internet approach to communication and project coordination. The ongoing exploration of such technologies confirms the techniques of transforming the current process of project procurement, design and construction to enable multiple benefits. An internet-based, collaborative information system can offer benefits such as: · Improved communication · ...

Keywords: Project Extranets, Information Technology (IT), New Economy, Communication, Collaboration and Integration

Valuation and Strategies for Investment on Automation and Robotics

Shih-Ping Ho, Liang Y. Liu
Pages 1-6

Abstract: This paper presents a quantitative valuation method for automation/robotics investments based on modern option pricing theory in finance. This framework explicitly considers the investments? uncertainty/risk and embedded managerial options. It further aligns the valuation of the investments with the market opinions. The analysis may help construction firms more accurately compute the value of automation/robotics ...

Keywords: Automation investment, robotics investment, valuation, option pricing theory, real options, capital budgeting, investment timing, risk management, strategic investment.

Cost Analysis and Formulation of Cost Models for Two-Storey Buildings Construction in Malaysia

Ng C. Hock, Zakaria Harun, Hamzah Abdul-Rahman
Pages 1-7

Abstract: This paper will describe the ongoing research work which is aimed at producing a cost forecasting and planning model most representative of the building in Malaysia. Due to the limitation of data and time, the model is targeted for a particular type of building. Its techniques can however be expanded to other types ...

Keywords: Cost Modelling, Elemental Cost Analysis, Cost Planning, Cost Forecasting, Cost Control, Monte Carlo Simulation.

Web-Based Construction Project Document Information Center to Support Performance Impact Analyses

Mamoon M. Hammad, Sabah T. Alkass
Pages 1-8

Abstract: Contemporaneous documents are favored in claims litigation or arbitration over any after the-fact proofs like expert witnesses. Each contracting group in a project enterprise creates, manages, and stores its documents, using proprietary methods and systems. This has proven to be an expensive exercise when effecting court-ordered document exchanges during discovery periods. To solve this ...

Keywords: Computer Integrated Construction, Document Management, Impact Claims, Project Information Modeling, Information Systems, Web Databases, Document Workflow.

Study of Foreman-Level Task Automation in the US Construction Industry

Carl T. Haas, Christine Alemany, Hyoungkwan Kim
Pages 1-5

Abstract: Three aspects of the effects of computers on the work of construction foremen were investigated: time saved, foremen?s reactions to and experiences with task automation, and trends in foreman-level task automation. Over 179 foremen employed by six companies utilizing foreman-level task automation were surveyed as part of this research effort. Of the 179 foremen ...

Keywords: automation, computer, construction, foreman, productivity.

Automated Assessment Technologies for Renewal of Underground Pipeline Infrastructure

Sanjiv Gokhale, Makarand Hastak, Rong-Yau Huang
Pages 1-6

Abstract: As our drinking water and waste water infrastructure age, it is important to increase the knowledge about the actual status of the infrastructure. Assessment of pipeline condition is becoming a priority with municipal authorities worldwide. CCTV based assessment is the norm, however accurate assessment is difficult to achieve in practice as subtle defects are ...

Keywords: pipeline assessment, SSET, hydroscope, robotic repair

Case Study on a Building Construction Project Carried out Using a "Cooperative Ventures" Approach

Shuzo Furusaka, Tomoyuki Taira, Masayuki Matsumoto
Pages 1-6

Abstract: This paper reports on the use of a "Cooperative Ventures" approach to execute a construction project. As demonstrated in this case study, the proposed method is potentially a practical means for project implementation. The effectiveness of this method is examined through a case study in which the project planning and design phases are ...

Keywords: cooperative venture, decision making, simultaneous engineering, Fuzzy Interpretive Structural Modeling, FISM, Analytic Hierarchy Process, AHP, organization Design

Present Circumstances of an Automated Construction System for High-Rise Reinforced Concrete Buildings

Noriyuki Furuya, Takashi Shiokawa, Koji Hamada, Kohei Kurita, Isamu Kunimoto, Hiroshi Miyakawa
Pages 1-8

Abstract: An automated construction system has been developed to reduce the total cost of high-rise reinforced concrete building construction. It has been already applied to three condominium construction projects in Japan and one office building construction project in Singapore since 1995. Application of this system ensures good quality, improves the working and environmental conditions, reduces ...

Keywords: automated construction, all weather, industrialized construction method, parallel delivery, material management

A Remote-Control System in the Pneumatic Caisson Method

Koichi Fujita
Pages 1-5

Abstract: A remote-control system in the pneumatic caisson method has been developed to control from the ground surface all the operations related to excavation and caisson sinking, thus minimizing workers? exposure to compressed air environment. The entire system consists of a remote-control operation system and a centralized control system on the ground surface that enable ...

Keywords: Pneumatic caisson, caisson shovel, remote control, automation, shortening contruction period, working environment

Application of Simulation Tool for Strategic Decision Evaluation in Life Cycle Project Management

Hemanta Kumar Doloi, Ali Jaafari
Pages 1-6

Abstract: This paper focuses on a new application for simulation as a tool specifically designed for holistic evaluation of project functionality within a life cycle project management framework. The authors describe a methodology for development of the aforementioned simulation tool, dubbed as DSMS (Dynamic Simulation Modeling System), devoted to Project Management decision making. The ...

Keywords: dynamic simulation, optimization, life cycle project management.

Underwater Deployment Robots - From Amoebot to Roboglider

I-Ming Chen, Hsi-shang Li, F. M. J. Nickols, Xinggang Yan
Pages 1-6

Abstract: Two types of biologically-inspired underwater robotic systems are introduced for underwater deployment and inspection purpose: 1) Amoebot, a shape-changing robot that mimics the swimming action of microorganism; 2) RoboGlider, an under-actuated 1DOF robotic platform whose locomotion is inspired by the phenomenon of falling leaf or paper. The movement of those underwater systems can be ...

Keywords: Underwater robot. Underwater deployment. Biomimetic robot. Nonlinear dynamical systems.

Feasibility Analysis of Double-Hit Hammering for Pile Foundations

Michel Cotsaftis, Erno Keskinen, Sirpa Launis, Yrjo Raunisto
Pages 1-4

Abstract: The problem of the realization of a double hit hammer for inserting piles in the ground as needed in construction has been addressed. It is mainly shown that in parameter space of the mechanical system, there exists an operating window where the single cycle behavior corresponding to one stroke of the power system can ...

Keywords: No keywords

Fuzzy Logic Methodology for the Comparison of Construction Firms

Amaury A. Caballero, Jose D. Mitrani
Pages 1-5

Abstract: General contractors, private owners, and public agencies are often faced with a problem; how to evaluate bids from competing construction organizations with respect to important, but difficult to qualify variables other than the lowest price. The paper presents a methodology for comparing the qualifications and work capacity of construction firms using a fuzzy logic ...

Keywords: Construction Management, Fuzzy logic, Decision-making.

An Interactive Cost-Schedule/Payment-Schedule Prototype Integration Model for Cost-Flow Forecasting and Controlling

Hong Long Chen, Wei-Tong Chen
Pages 1-5

Abstract: One of the most important aspects of running a construction business is cash flow management. More and more construction companies collapse due to deficiency of liquidity to support their daily activities instead of the failure of the engineering knowledge and skills. Hence, the need for cash flow management has become the ...

Keywords: integration model, cost-flow, cash-flow, forecasting, controlling

A Hydraulic Open Loop System for Controlled Excavation along Prescribed Path

Eugeniusz Budny, Witold Gutkowski
Pages 1-6

Abstract: In this study, an open loop hydraulic system for controlled excavation is proposed. It is based on a kinematically induced motion of the excavator bucket. The three degrees of freedom of the latter are driven, in a unique way, by three independent hydraulic actuators. All of them are filled with the oil in ...

Keywords: excavation, controlled motion, hydraulic controller, automation, open loop system.

Planning Principles for Enhancing the Implementation of a Mobile Robot on the Construction Site

Thomas Bock, Klaus Kreupl, Jens Herbst
Pages 1-5

Abstract: The main difference between industrial robots which are applied to the prefabrication of building components and the construction robots which are mostly used for on-site work, is its mobility based on interaction with the environment through sensors and built-in intelligence, and the need to cope with the specific conditions on ...

Keywords: Planning Principles, On Site-Automation, Integration of Trades, Site Organization, Constant Data-Flow

Expert System for Special Construction Robots Development

Pavel Belohoubek, Zdenek Kolibal
Pages 1-5

Abstract: The article deal with systematic and system support of the special robots develoment at TU Brno. This approach is based on the robot expert system development. This expert system is developed based on the tradition of robot development at TU Brno, the analysis of robot technologies (for the machine industry, construction industry etc.), analysis ...

Keywords: robot, technology, construction, database, expert system, development.

The Systemic Analysis of the Instability Phenomenon of the Mining Constructions in the Coal Mining Exploitation Jiu Valley-Romania

Susana Arad, Victor Arad, Dana Cosma
Pages 1-6

Abstract: The paper?s aim is to reduce the instability risk for the mining works, which could affect the underground mining constructions or the related surface areas. The subsystem of ?rocks? resistance? is analysed using the mechanical proprieties of rocks?mechanical resistance. These proprieties were observed and measured both ?in situ? and in the laboratory. The ...

Keywords: networks, defect detection, image processing, pattern recognition.

Utilizing Neural Networks for Condition Assessment of Sanitary Sewer Infrastructure

Dulcy M. Abraham, Myung-Jin Chae, Sanjiv Gokhale
Pages 1-6

Abstract: This paper will describe the development of an improved methodology for accurately analyzing and interpreting data regarding the condition of sanitary sewer systems. The proposed methodology enables fast and accurate assessment, which is significant in building a sewer condition database for asset management. The inspection system obtains optical data from the ...

Keywords: Sewer system, SSET, condition assessment, inspection, artificial neural networks, defect detection, image processing, pattern recognition.

Factory Housing. Making the Connections

Robert Wing
Pages 1-6

Abstract: The global shortage of quality housing, with governments pushing expansion of their house-building programmes, points to an opportunity for the development of factory housing systems and the effective use of prefabrication. In recent years, numerous construction companies have experimented with the use of off-site production for housing, most of them resulting no significant cost-savings. ...

Keywords: Prefabrication, housing, steel framed, extrusions, automation, connectors

Emerging Information and Computing Technologies for Construction Automation

Hojjat Adeli
Pages 1-4

Abstract: Several new information and computing technologies in construction engineering and management are discussed. They include neural networks, object-oriented programming, concurrent engineering, Internet computing, and collaborative computing. Examples of research performed by the author and his associates in recent years are described briefly.

Keywords: automation, collaborative computing, concurrent engineering, CONSCOM, construction, design, Internet, Java, neural networks, object-orient programming

A New Wave of Construction Automation and Robotics in Japan

Yukio Hasegawa
Pages 1-5

Abstract: In Japanese manufacturing industry, research and introduction of automation and robotization was started in 1950?s. In 1970?s they were enjoying fruits of their efforts and labor productivity and labor conditions were much improved. Following that of manufacturing industry the research in construction industry was started around in 1980?s The nationwide research activities and the ...

Keywords: automation, robotics, construction, research projects, wireless control, new Concept, computer simulation

Open Issues and Future Possibilities in the EU Construction Automation

Carlos Balaguer
Pages 1-7

Abstract: The open issues and the main barriers to introducing automation in the construction industry are analyzed. Future possibilities of massive introduction of automation are also analyzed. These analysis are focusing in the house-building construction in the European Union (EU). The level of advances and comparative study with others industrial sectors show that more effort ...

Keywords: Construction automation, robots, bricklayer, assembly, comparative study

New Directions and Developments in Robotics and Site Automation in the U.S.A.

Miroslaw Skibniewski
Pages 1-13

Abstract: This paper discusses examples of the latest developments in robotics technologies in the United States that may be of interest to construction robot systems developers. Both theoretical, far reaching research such as collaborative robotics as well as hardware systems oriented R&D is included in the paper. Examples of the latest industry initiatives and consortia ...

Keywords: robotics, automation, information technology, construction

Navi-System: Automated Survey System for Marking Work in Construction Site

Jun Nishimura, Takahiro Azuchi, Humio Aita, Hideo Kobayashi, Hajime Nomura
Pages 1-5

Abstract: In construction of nuclear facility, there are metal works to secure and support these pipes to walls and floors. In addition, it is required to construct opening where these pipes pass through walls and floors. Metal plates are encased in and openings are installed at walls and floors while placing reinforcement. Current work ...

Keywords: nuclear facility, marking, total station, CAD, three-dimensional measurement

Benchmarking the U.S. Industry's Use of Automation and Integration Technologies on Projects

James O'Connor, Shane P. Hadeed, Kristen E. Braden, Mandar Deogaonkar
Pages 1-7

Abstract: There has never been an industry-wide benchmarking study of the levels of technology used across the various life-cycles or phases of projects. The primary objective of this study was to measure the extent to which task integration and task automation (IA) technologies are being used in executing capital facility projects, including those used ...

Keywords: No keywords

A Topology Deduction System for the Design and Construction of Buildings

Tang-Hung Nguyen, Amr A. Oloufa, Masaaki Ikeda
Pages 1-6

Abstract: Constructed facilities or buildings are comprised of many components, each of which is usually represented in product data models by their spatial information including three dimensional (3-D) geometry and topology. Geometrical data describes the facility components? dimensions and locations, whereas topological data represents information about spatial relationships (e.g. connectivity, adjacency, containment, etc.) between the facility ...

Keywords: topological relations, building design, information representation, product data models, solid modeling, computer-aided design.

Enterprise Modeling of A/E/C Firm

Ji Sang Park, Teresa M. Adams, Pisun Sirisuksakulchai
Pages 1-6

Abstract: Dynamic nature of the A/E/C industry, multiple project participant, and disconnected communication between project participants make it difficult to develop integrated information systems for the A/E/C industry. This paper focuses on defining of interrelationship between data model and process model for construction project management, as a step toward fully integrated project management. The paper ...

Keywords: Information Engineering, A/E/C, Enterprise Modeling, System Integration

The Achievements of the "Computer Integrated Road Construction" Project

Francois Peyret
Pages 1-6

Abstract: The CIRC project has been the first major European project aiming at introducing the benefits of new technologies into the road work sites. After having introduced the project and its functional objectives, the paper describes the two products that were developed, the one for the compactors and the one for the asphalt pavers. ...

Keywords: computer integrated construction, CAD, real-time positioning, work site

Canopen for Mobile Construction Machines - An Open Communication Network for Control and Automation

Wolfgang Poppy, Erik Unger
Pages 1-4

Abstract: Information technology and communication technology offer increasingly improved possibilities for automation and robotisation in mobile construction machines. Apart from the electronic systems the intelligent connection of subsystems by a network plays a crucial role. The preconditions for the connection within mobile construction machines were created with the research project "Standardisation of Open Communication in Mobile ...

Keywords: mobile construction machines; electronic systems; CANopen-network; automation; robotisation; management system

Position Modelling of Planar Two-Link Manipulator with Electrohydraulic Control System

Ryszard Dindorf
Pages 1-6

Abstract: The paper deals with the problems of kinematic and dynamic modelling, simulation and experimental test of the planar two-link manipulator with the electrohydraulic control. The kinematic model was constructed on the basis of the kinematic relations and the dynamic model by means of bond graphs. On the test stand the dynamic characterisation and identification ...

Keywords: planar manipulator, position modelling, electrohydraulic control system

Formulation of a Beta Probability Distribution Function for Construction Process Control

Kraig Knutson, Cliff Schexnayder, Javier Fente
Pages 1-7

Abstract: The lack of confidence in the selection of a Probability Distribution Function (PDF) to depict an activity duration has limited the use of simulation as a tool for constructors. The PDF used for a construction simulation should be continuous, limited between two positive time intercepts, and with a unique mode in its defined ...

Keywords: Simulation, Modeling, Probability Distribution Function, Beta Distribution, Fitting Beta Distributions, Beta Shape Parameters, Density Curves, Construction Activity Duration.

Integration of Rule Based and Sensor Based Control for a Six-Legged Insect-Like Robot

Pitikhate Sooraksa, Kangwan Saensawasd, Sorapon Bunjongsena Na Ayuttaya
Pages 1-4

Abstract: This paper proposes the rule based and sensor based control strategies for a six-legged insect-like robot. This control scheme emulates the well-known insect behavior called ?the reflex action.? Three types of sensors are embedded in the body of the robot, which are infrared sensors, ultrasonic sensors and limit switches for tracking performance, collision ...

Keywords: insect-like robot, reflex control, walking robot, rule based control, sensor based control

Phonon Mechanisms: A Know-Why for Vibration in Flexible-Link Robot Arms

Pitikhate Sooraksa
Pages 1-5

Abstract: Utilizing theory of the secondary quantization, a study of vibration behaviors in flexible-link robot arms is possible in microscopic viewpoints. This paper studies the relation of vibration related to phonon coupling interaction by means of Green?s function method beginning with energy model. Results confirm analytically the existence of the relationship between the macroscopic ...

Keywords: flexible arm, vibration theory, phonon mechanism, vibration behavior, flexiblelink robot

A Bicycle Robot: Part 1 Modeling and Control

Pitikhate Sooraksa, U. Sritheeerawirojana
Pages 1-5

Abstract: In this paper, a simple fuzzy logic based intelligent architecture is developed for controlling a bicycle robot. The approximated model for membership functions and control gains can be obtained by simply considering the robot as an inverted pendulum in 3-dimensional space. The obtained model is merely a conceptually estimating one because the mismatch ...

Keywords: bicycle robot, fuzzy logic control, modeling, intelligent control, two wheeled robot

A Bicycle Robot: Part 2 System Implementation

Pitikhate Sooraksa, T. Uthairat, S. Kaopratum, U. Sritheerawirojana, V. Monyakul
Pages 1-4

Abstract: This paper presents the realization and implementation of a bicycle robot using the control scheme designed in Part 1. The control hardware architecture of the robot consists of tilt sensors, a turning control unit, a driving unit and a microcontroller. In a control cycle, the functional mechanism can be described as follows: First, ...

Keywords: bicycle robot, fuzzy logic control, modeling, intelligent control, two wheeled robot

Study on Assembly Methods for Large-Scale Structure Using an Innovative and Intelligent Field Factory

Hiroo Takada
Pages 1-9

Abstract: The International IMS IF7 Project has developed a new type of the construction assembly methods for Large-scale Structure in view of the concept, an Innovative and Intelligent Field Factory for a large-scale building construction such as high-rise residences, ship building, etc. in order to improve productivity on construction site. Much smaller investment and earlier ...

Keywords: Field-factory, Parallel production, Constant production, Pre-assembly, Construction-term shorten, Cost saving, Partitioning, Modularization

Analysis of Risk in Construction Automation Investment

Mark Taylor, S. C. Wamuziri, I. G. N. Smith
Pages 1-6

Abstract: The decision to invest in construction automation rests upon the financial and intangible benefits. Although a selection of associated costs may be obtained from suppliers or estimated using managerial judgement there is an inherent level of uncertainty surrounding the annual cash flows. Analysis of investment risk may play an important ...

Keywords: Automated construction technology, financial risk, generic appraisal model

Prefabrication in the Singapore Construction Industry

Seng Kiong Ting, H. F. Jin
Pages 1-6

Abstract: Singapore?s limited resources have caused severe labor shortage and brought adverse impact on the construction industry. Prefabrication, the crucial part of the integrated construction automation processes, has appeared to be the ideal and most practical way to sustain the long-standing strategy of reducing the reliance on labor resource. In this paper, the potential of ...

Keywords: Labor shortage, Industrialization, Construction productivity, Prefabrication technology

Alternate Strategies in the Use of Information Technology in the Construction Industry of Different Countries

Seng Kiong Ting, F. Wang
Pages 1-7

Abstract: The effective application of Information Technology (IT) in construction requires a combination of strategic and tactical development. This paper adopted a simplified strategic IT planning framework of four levels---national and government level, professional and institution level, construction enterprise level and construction project level to review the alternative strategies in the use of IT in ...

Keywords: Information Technology, Strategic IT, construction IT and Framework

Prediction of Highway Bridge Performance by Artificial Neural Networks and Genetic Algorithms

Onur B. Tokdemir, Cemal Ayvalik, Jamshid Mohammadi
Pages 1-8

Abstract: Bridge management systems (BMS) comprise various techniques need to help make decisions on the type of works that need to be performed to maintain the serviceability of a bridge and to extend its useful life. These decisions rely on current and future bridge conditions therefore it is essential for a ...

Keywords: Bridge Management System, Artificial Neural Networks, Genetic Algorithms

Automatic Control System of the Eccentricity of Gravity for Optimum Turning Performance of a Tracked Vehicle on Soft Terrain

Thai Dang Tran, Tatsuro Muro
Pages 1-7

Abstract: The objective of the research is to develop an automatic control system of eccentricity of center of gravity of a bulldozer to achieve optimum running performance on soft terrain. For this purpose, a simulation analysis, which can predict turning characteristics of tracked vehicles on soft terrain with high accuracy in a short time, ...

Keywords: eccentricity of center of gravity, optimum criteria, turning performance, tracked vehicle, soft terrain.

Factors Influencing the Production of High Quality Aggregates for the Civil Construction Industry and the Essential Need for Crusher Automation

Eric Trueman
Pages 1-7

Abstract: Increasingly higher specifications for concrete and roadway structures required by the Construction Industry worldwide, demand the high volume production of aggregates with the highest possible cubicity. This paper looks at the use of advanced crushing technology, circuit design and importantly the need for crusher automation to achieve consistent quality at optimum cost. Reference is also ...

Keywords: No keywords

Evaluating Project Risks of Project Delivery Systems in Construction Projects

Tsung-Chieh Tsai, Shuzo Furusaka, Takashi Kaneta
Pages 1-6

Abstract: This paper investigates two different project delivery systems in Taiwan and Japan, and presents a pilot study to evaluate the effectiveness of risk reduction of these systems in construction projects. Basically, Fault Tree Analysis is used to assess the probability of risk occurrence and to identify the importance of risk factors contributing to risk ...

Keywords: project risk, risk factor, project delivery system, Fault Tree Analysis, Reliability Graph Analysis

Path Planning of Cooperative Construction Manipulators Using Genetic Algorithms

PL. Sivakumar, Koshy Varghese, N. Ramesh Babu
Pages 1-6

Abstract: This paper presents the work done to investigate the potential of applying Genetic Algorithms (GA?s) to automate the path planning of cooperative construction manipulators. Though there is potential to achieve economy by using cooperative manipulators, this method is not being commonly adopted in construction sites. A key barrier to the use of cooperative manipulators ...

Keywords: Cooperative Construction Manipulator, Path Planning, Genetic Algorithms

A Neural Networks Decision-Support System for Bidding in Construction

Mohammed Wanous, A. H. Boussabaine, J. Lewis
Pages 1-4

Abstract: One of the various strategic decisions that have to made by construction contractors is whether or not to submit a bid for a new project when an invitation has been received. An innovative neural network model is proposed in this paper to help contractors in making their bid/ no bid decisions. This model ...

Keywords: ANN, ANN Bidding Model, "Bid/ No bid" Criteria, Construction, Syria.

Work Force Characteristics in a Robot Driven Construction Industry

Rita A. Gregory, Terrance Ward
Pages 1-5

Abstract: The gradual arrival of robotics onto the construction scene in the past two decades has given rise to a whole new realm of mechanization and management. In order to decline which tasks are best suited for automated construction, the different levels of automation must first be defined. Theses are mechanization, robots, mechanized construction systems, ...

Keywords: No keywords

Vibration Suppression of a Two-Link Flexible Manipulator

Somchai Wiriyathornphan, Pitikhate Sooraksa
Pages 1-4

Abstract: Flexible-link robot arms have advantages over the conventional ones such as less weight, less energy consumption, and smaller actuators. However, a disadvantage of the manipulators is the vibration occurred inherently due to the flexible behavior of the arms during operation. This situation may effect control performance in some applications, for example, the use of ...

Keywords: bicycle robot, fuzzy logic control, modeling, intelligent control, two wheeled robot

High Productivity Continuous Concrete Mixing System

Tek Raj Gyawali, Kazuie Yamada, Matabee K. Maeda
Pages 1-6

Abstract: Newly developed continuous M-Y mixer has number of mixing units connected in series. When using it in the horizontal way, it fully complies the 2n mixing theory of kneading and lapping mechanism. When using it in the vertical way, mixing work can be done under gravity force only, with the new modified mechanism ...

Keywords: 2n mixing theory, kneading and lapping, M-Y mixer, inter-particle collision and impact, ESG mixer, new mixing system, real time monitoring system

Design and Development of a Planar Inchworm Robot

Song-Huat Yeo, I-Ming Chen, R S Senanayake, Peng Sin Wong
Pages 1-6

Abstract: An inchworm-like robot is a mobile robot that imitates the locomotion pattern of a natural inchworm. Inchworm or snake like robots can crawl or move in highly constrained environment such as maintenance conduit for buildings and factories, and human intestines and blood vessels. In this paper, the development a planar inchworm robot based on ...

Keywords: Inchworm robot. Gait generation.

Autmod3: An Automatic 3D Modularization System

Ramiro Diez, M. Abderrahim, V. M. Padron, L. Celorrio, J. M. Pastor, C. Balaguer
Pages 1-7

Abstract: This paper presents the new automatic system called AUTMOD3 for automatic design of modular buildings. The system permits to obtain in an automatic way, and with guided assistance the dimensions and position of the 3D and/or 2D modules that are needed to construct a building starting from the traditional architectural design. The system ...

Keywords: architectural design, modular design, design automation

Field Demonstration of Laser Scanning for Excavation Measurement

Geraldine S. Cheok, Robert R. Lipman, Christopher Witzgall, Javier Bernal, William C. Stone
Pages 1-6

Abstract: The use of a scanning laser to measure terrain changes due to excavation at a construction site is described. The objective at this phase of the project is to develop the tools necessary to measure terrain changes in real-time. This paper focuses on adaptations required to extend previously developed scanning procedures and post-processing ...

Keywords: Construction, excavation, LADAR, laser sensor, terrain mapping, volume Calculations

Methodological Analysis of Automation and Robotization for the Process of Placing and Consolidation of a Concrete Mixture

Thomas Bock, Serguei Voltchkov
Pages 1-3

Abstract: Transportation, distribution and consolidation of a concrete mixture demands use of technical resources, able to supply and to place a concrete mixture into large structures, erected at determined height under zero level, allowing the concrete to keep its required properties. Using of robots in construction promotes a heightening of work's productivity, improvement of quality ...

Keywords: automation, robot, construction, conctere, placing, consolidation

Automated Control Systems for On-Site Concrete Distribution by Robotic Manipulators

Thomas Bock, Serguei Voltchkov
Pages 1-4

Abstract: Using boom-manipulators for raising high-altitude monolithic buildings with the help of sliding shutterings provides high economic indexes. Using boom-allocators in a combination with the detailed logistics at a building platform causes essential savings of time, that is one of the basic factors both in monolithic construction, and in economy generally. The significant effect brings ...

Keywords: robot, manipulator, automation, control, construction, concrete

Environmental Care Execution Operation of GRB System

Kazuo Wako, Takehiko Iizuka
Pages 1-6

Abstract: In 1997, the semi-automatic unified system for piling work was developed and introduced to the market as the 'GRB SYSTEM'. This system is comprised of four distinct machines; the ?Silent Piler?, the ?Unit Runner?, the ?Clamp Crane?, and the ?Pile Runner?. The 'Press-In' method, with its silent and vibration-free driving process, ...

Keywords: GRB SYSTEM, Silent Piler, Clamp Crane, Unit Runner, Pile Runner, Press-In

A Framework for Integration of Supply Chain Management Applications Based on the IAI/IFC Model

R. Jardim-Goncalves, R. Tavares, A. Grilo, A. Steiger-Garcao
Pages 1-7

Abstract: At the present time, electronic data exchange in construction industry is mainly used for the exchange of information related to technical design, most of the time using proprietary data formats from the CAD systems in use. Planning, control and management activities are very often not supported automatically, and standard models to enable their automatic ...

Keywords: Integration, Interoperability, Standards, IAI/IFC, Supply Chain Management

Development of Auto-Conveying System for Dam Concrete

Misao Baba, Mitsuo Takeda, Takashi Nogiwa
Pages 1-9

Abstract: In the conventional method of dam construction work, dam concrete is transported from batching plant and then placing work is usually done using bucket moved by cable or jib cranes. This paper reports about the newly developed automatic conveying and transportation system of dam concrete directly from batcher plant to the concrete placing point ...

Keywords: concrete dam, concrete, transportation, placing, automation, belt conveyor

Application of Automated Building Construction System for High-Rise Office Building

Hiroshi Miyakawa, Jyunichi Ochiai, Katsuyuki Oohata, Takashi Shiokawa
Pages 1-6

Abstract: High-rise steel structure buildings are generally constructed using tower cranes. But in this conventional method, quality and work schedules are easily affected by wind or rainfall, and there are many dangerous working conditions. The automated building construction system, called ABCS, is new construction method which integrates all-weather warehouse facilities, automated conveyor equipment and centralized ...

Keywords: automated construction, all weather, factory automation, parallel delivery, construction management system

On the Design of a Large Scale Redundant Parallel Manipulator

Huapeng Wu, Heikki Handroos, Juha Kilkki
Pages 1-7

Abstract: This paper presents a large scale redundant parallel manipulator. To design the manipulator some preliminary considerations are given. The manipulator is built based on two 3DOF parallel mechanisms. Hydraulic cylinders are employed as actuators to achieve linear motion and offer great force. The kinematics analysis is given for the manipulator. The control schemes are ...

Keywords: No keywords

Automatic Controlled Vibratory Pile Driving with Shock-Stress Limitation

Dirk Reusch
Pages 1-6

Abstract: For several decades vibratory pile driving has been extensively applied in civil engineering, e.g. in the construction of bulkheads. On urban construction sites shock waves occur which could damage nearby building structures and annoy humans. State-of-the-art machinery provides three control inputs (frequency, excitation force and surcharge force) to achieve two ...

Keywords: vibratory pile driving; shock-stress limitation; nonlinear oscillation; fuzzy control

Virtual Visualization for the Mechanical Trade

Phillip S. Dunston, Mark Billinghurst, Yihong Luo, Ben Hampson
Pages 1-6

Abstract: 3D CAD visualization tools provide a limited sense of the merging between design and real space and are still constrained by flat media. Furthermore, new computer interface metaphors will emerge that the construction industry should prepare to embrace. An outside-the-computer paradigm is the next step in visualization. Virtual reality and positioning technologies are converging ...

Keywords: 3D CAD, augmented reality, computer-aided drawing, detailing, mechanical, piping, virtual reality, visualization

Selecting Technology Projects Based on an Information Economics Approach: A Step Towards Integrating Innovation into Business Strategy

Rodney Stewart, Sherif Mohamed
Pages 1-9

Abstract: The diffusion of technology utilisation in the construction industry has not progressed according to expectations; there are many examples of innovative technology (e.g. construction automation, field robotics, video conferencing, web and multimedia technology etc.) failing to achieve satisfactory levels of adoption, practical application and usage if adopted. Many technology projects commenced in the construction ...

Keywords: Technology Projects, Information Economics, Construction Organisation; Risk

Material Classification By Drilling

Diana LaBelle, John Bares, Illah Nourbakhsh
Pages 1-6

Abstract: Underground coal mining is one of the most dangerous occupations. Years of effort have been dedicated to researching methods of characterizing mine roof and floor for improving the mining environment. This research investigates using a neural network to classify rock strata based on the physical parameters of a roof bolting drill. This paper ...

Keywords: mining automation, rock classification, neural networks, drilling, coal interface detection

Toward a Supply Chain Collaboration in the e-Business Era for the Construction Industry

Chian-Hsueng Chao, Ahmad Hadavi, Raymond J. Krizek
Pages 1-6

Abstract: Traditional business partnerships are changing in response to technology advancements and business innovations. Many companies have already reengineered their internal processes, and now the focus has shifted to their trading partners. With network connectivity, supply chain integration is the core strategic competence that enables many companies to act as one. A supply chain represents ...

Keywords: IT(Information Technology) , BPR (Business Process Reengineering), SCM (Supply Chain Management), CM (Construction Management)

Construction Industry Business Processes Modeled with Object-Oriented Approach

Chian-Hsueng Chao, Ahmad Hadavi, Wei Lo, Raymond J. Krizek,
Pages 1-6

Abstract: For the construction industry, the demands for optimization and greater efficiency become particularly urgent when the flow of project information extends beyond the borders of organizations. Driven by the need to attain even greater corporate competitive advantages, many business philosophies advocate the use of ?the power of information technology to radically redesign business processes.? ...

Keywords: IT (Information Technology), BPR (Business Process Reengineering), OMT (Object Modeling Technique), UML (Unified Modeling Language), CORBA (Common Object Request Broker Architecture)

XML Application in AEC Industry

Ray Weng, Luh-Maan Chang, Larry Chen
Pages 1-7

Abstract: The exchange and reuse of the information have become a much more critical issue for the success of the project management in the Architecture, Engineering and Construction (AEC) industry. The appearance of Extensible Markup Language (XML) provides a potentially well-adopted solution to alleviate the pain of data exchange. Based on XML, this research proposes ...

Keywords: XML, aecXML, Estimating, Construction Automation, Project Management

An Internet-Based Communication Model for A/E/C Industry

Manar Shami, Hazem Elzarka
Pages 1-6

Abstract: Among the most significant factors contributing to projects? success in the A/E/C industry is effective communication. One shortcoming of current project websites is that the published information may be static and does not enable professionals to take advantage of the wide range of functionality available through the Internet. This has generally led to ...

Keywords: Smart Document, Communication Channel, Project Website, Collaboration

Web-Based Virtual Reality Facility Representation and Simulation in Construction Pre-Planning

Shih-Ping Ho, Liang Y. Liu
Pages 1-5

Abstract: This paper presents a prototype VR (virtual reality) system that allows participants of a construction project to immerse in a vivid 3-D environment via the Internet and effectively review alternative building models. Using the system, engineers, architects and other participants of a construction project can exchange project information. Construction sequences and schedules can be ...

Keywords: Pre-planning, facility representation, facility simulation, information technology, virtual reality, VRML, web-based virtual reality, World Wide Web.

The Development of an Automated Cost Estimating System Using 3D CAD and Relational Database

Young-Suk Kim, Se-Wook Oh, Jung-Ryul Kim, Beak-Joon Sung
Pages 1-9

Abstract: The successful construction of a facility highly depends on adequate planning, design, and control of the construction process. In an effort to better monitor and control the construction project, the construction industry has been engaged extensively in the development of a new computerized design and management system applying the concept of Computer Integrated Construction ...

Keywords: CIC, Information Technology, Cost estimating, 3D CAD, Relational database

Intelligent Infrastructure Health Monitoring Based On Fuzzy Analysis

Nicholas Chileshe, Henry Nyongesa, Paul Watson
Pages 1-5

Abstract: This paper presents evaluation of BART - Bridge Assessment and Rating Tool, an intelligent decision support tool for analysis of reinforced concrete, pre-stressed concrete and steel/concrete composition type of bridges based on fuzzy arithmetic and fuzzy reasoning. BART relies on data obtained from field measurements and observations on bridges to predict a "safe" window ...

Keywords: Intelligent Systems, Intelligent Structures, Fuzzy Systems, Infrastructure Monitoring, Bridge Assessments, Bridge Maintenance.

Development of Automatic Loading System for Crushed Stone Industry

Yoshiyuki Nagano, Toru Kurenuma, Hideto Ishibashi, Akira Hashimoto
Pages 1-5

Abstract: In reply to the desire to automate one process in the work of crushing stones, an Automatic Loading System on the basis of a hydraulic excavator was developed. The system is constituted so as to execute automatic operation relying on a Teaching Playback function. The teaching positions are only the start position for ...

Keywords: Automatic Loading, Hydraulic Excavator, Teaching, Playback, Trajectory Control, Crushed Stone

Integration of Measurement Systems by Using GPS

Jan J. Uwland, Rob Suers, Peer Goudswaard
Pages 1-4

Abstract: In the framework of Halftime a research program of HBG and TNO tests were carried out with GPS measurement systems on different machinery. On two building sites in the Netherlands the GPS measurements were performed with a paver and a piling rig. In the horizontal plane the accuracy of RTK GPS was sufficient ...

Keywords: GPS, Paving, Piling, HALF TIME

Application of Neuro-Fuzzy Thresholding to Bridge Painting Defects Recognition

Po-Han Chen, Luh-Maan Chang
Pages 1-6

Abstract: The neuro-fuzzy thresholding method segments a grayscale image into three areas in accordance with the illumination values of the pixels in the image. The three average illumination values of the three areas are then sent to a pre-trained neural network to obtain the three corresponding threshold values. Fuzzy theory is used to adjust ...

Keywords: neural networks, fuzzy adjustment, image thresholding, k-means algorithm, neurofuzzy thresholding.

Design of a Gripping System for the Automated Assembly of Large Building Modules

Thomas Bock, Jens Herbst, Carlos Balaguer, Mohamed Abderrahim
Pages 1-8

Abstract: A substantial part of automated material handling and assembly is the interface between machine and work piece. These end-effectors may be gripping devices which actually hold the object for moving or placing it within the working range of the machine. But the mere holding of an object while transfering it from one point ...

Keywords: gripper, end-effector, prefabricated building elements, sensors, material handling, assembly

Home 24* - 24 Hours to Build a House

Thomas Bock, Frank O. Prochiner
Pages 1-4

Abstract: Home 24 - this could be the future name of buildings which can be moved into only 24 hours after the beginning of their construction. Time is money, all the more as about 2/3 of the total costs of a building are apportioned to the costs of construction. Consequently, the most promising way to reduce these costs ...

Keywords: No keywords

Automated Tracking of Structural Steel Members at the Construction Site

Karen M. Furlani, Lawrence E. Pfeffer
Pages 1-6

Abstract: This paper presents further development and experimental testing of Comp- TRAK, a prototype system for identification and spatial tracking of structural steel components on a live construction site. Comp-TRAK is a web-based system for rapid tracking of construction components with compact, field-rugged sensors and computers, interoperability protocols for data transmission, and a 3-D site ...

Keywords: bar code, component tracking, construction, laser positioning system, metrology, real-time tracking, RFID, wireless data transfer.

Automatic Detection of Significant Variation from Designed Intent Utilizing Survey Data. CIAMS: Construction Information and Management System

DeWitt T. Latimer, Ogbemi Hammond, Richard Hallon, Christian T Stidsen, Sze-Lok Lam
Pages 1-5

Abstract: Current practice of providing an ?As-built? survey as the completion of work should not be the only mechanism for observation of problems in the construction process. In many cases, survey data is available early in a project, but may not yet have been reconciled against the engineering intent. CIAMS (Construction Information And Management ...

Keywords: Construction Automation, Construction Metrology, Information Management System, Construction Assessment, Decision Support System.

Safety Control Mechanism for Construction Working Robots in Collaboration with Human Workers

Hiroyasu Ikeda, Noboru Sugimoto, Tsuyoshi Saito, Masanori Onishi
Pages 1-8

Abstract: The principle of safe working based on the safe confirmation is clarified in order to realize such a robot for construction work that can share the working space with human workers. For this purpose, a monitoring system and an intrinsically safe actuator using sensor are prepared for the constructing robot, and a safety ...

Keywords: Safety Control, Human-robot Collaboration, Ultrasonic Radar Sensor, Bumper Switch, Fail-safe, Intrinsically Safety, Actuator, MR Fluid

OASIS: A Real-Time Structural Monitoring System

Robert Nigbor, Outhay Viengkhou
Pages 1-5

Abstract: This paper presents a commercially available real-time monitoring system using dynamic measurements for continuous evaluation of the integrity of critical civil structures. OASIS - On-Line Alerting of Structural Integrity and Safety - utilizes a variety of sensors and a unique set of parameters derived by the responsible engineer to continuously monitor structures for critical ...

Keywords: structural monitoring, structural health, vibration, wind, earthquake, damage, safety

Steel Bridge Rust Identification Using Multi-Resolution Pattern Classification

Po-Han Chen, Yuh-Chin Chang, Luh-Maan Chang
Pages 1-6

Abstract: Multi-resolution pattern classification (MPC) is an image segmentation technique that extracts features from an image and segments the image into several featured areas. Two resolution levels are contained in the MPC approach, the fine resolution level and the coarse resolution level. Pre-selected features, such as means and variances, will be computed, and then clustered ...

Keywords: multi-resolution pattern classification (MPC), spatial gray level dependence method (SGLDM), gray level difference method (GLDM), clustering, homomorphic filtering

Kinematic Control for Navigation of Mobile Parallel Robots Applied to Large Structures

Rafael Aracil, Miguel Almonacid, Roque J. Saltaren, Jose Ma Sabater, Jose Ma Azorin
Pages 1-7

Abstract: In this article we propose a path planning strategy for a parallel climbing robot. The robot must be capable of displacing along an ?a priori? unknown trajectory, i.e. tubes or beams. Firstly we show the characteristics of the proposed robot. Next we briefly review the theoretic tools of parallel platforms, the inverse and ...

Keywords: Robotics, construction robots, path planning, navigation, control

Genetic Solution of Building Design

S. Balasubramaniam, C. Kalairaja, S. Karthikeyan, N. Venkateswaran
Pages 1-7

Abstract: This paper proposes a novel genetic programming based technique for automatic development of planning, design and construction of a basic building. The problem uses certain predefined methods or algorithms to get a good and proper building plan. Our design takes care of the main problems such as ventilation, sunlight and air. Our plan is ...

Keywords: Genetic algorithms, Building design, Automatic programming, Windows, Plan.

Global Control for Robotic Excavation Using Fuzzy Logic and Statecharts

M. Santos, Q. P. Ha, D. C. Rye, H. F. Durrant-Whyte
Pages 1-7

Abstract: This paper presents global strategies for the computer control of autonomous backhoe-type excavators. The control structure is divided into low and high levels. The low level control utilises fuzzy logic to encapsulate expert experience for capturing soil in many excavation scenarios. UML statecharts are used at the higher level for mapping environment and machine ...

Keywords: robotic excavation, global control, fuzzy logic, UML, statecharts

Study on the Overall System Architecture of Construction Equipment Support Information System

Yasushi Nitta, Hiroshi Hirashita, Masataka Ebara, Taira Emoto
Pages 1-6

Abstract: The construction industry has made active efforts, such as CALS/EC, to realize seamless and smooth data integration during a whole project lifecycle. In the construction stage of a project, an automatic control equipment, which needs only to input design data, would be desirable. Utilization of construction records for quality control and inspection is ...

Keywords: No keywords

Super Dense Real-Time Monitoring of Earthquakes for a City Gas Network in Japan

Fumio Yamazaki, Yoshihisa Shimizu
Pages 1-6

Abstract: To cope with earthquake-related secondary disasters, city gas utilities in Japan have promoted several countermeasures in the last two decades. Tokyo Gas Co. introduced an earthquake monitoring and rapid damage assessment system, SIGNAL, with 331 SIsensors in 1994, as well as installing automated shutoff valves and intelligent meters. After the 1995 Kobe Earthquake, the ...

Keywords: city gas network, earthquake, SI sensor, seismic monitoring, damage assessment, GIS, supply shutoff, secondary disaster.

Integrating Design and Construction: A New Approach

Che Wan Fadhil Che Wan Putra, Mustafa Alshawi
Pages 1-5

Abstract: This paper presents the issue of integrating design and construction in the context of Computer Integrated Construction (CIC). A new approach of a proposed strategic framework using the Modularised Approach is highlighted to overcome the complexity of integrating design and construction whereby such integrated environment need to share data via a central core. Such ...

Keywords: Integration, Design, Construction, Modularised, Integrated Environment

Using Actual Industrial Robot Manipulators with Construction Tasks

J. Norberto Pires
Pages 1-5

Abstract: Actual industrial robot manipulators are sophisticated machines that work essentially as position and motion controllers. They have sufficiently powerful programming environments and good communication devices that, considering also their ability to perform human-like tasks, make them a typical case of flexible manufacturing equipment. Force control can also be used if no more than passive ...

Keywords: Industrial Robotics, Robots for construction, software, man-machine interfaces.

A Control System of the Tire Inflation Pressure for Running of a Wheel System Vehicle on Soft Terrain

Tadaomi Eguchi, Tatsuro Muro
Pages 1-6

Abstract: The purpose of this study is to inquire into the primary factor closely for running of a wheel system vehicle on soft terrain. So far the inflation pressure of an off-the-road tire was used as in constant under operation, and when the equivalent elastic modulus of a tire was higher than that of ...

Keywords: inflation pressure, elastic wheel, sinkage

A Virtual Environment for Building Construction

Norman Murray, Terrence Fernando, Ghassan Aouad
Pages 1-6

Abstract: The construction industry has acknowledged that its current working practices are in need of substantial improvements in quality and efficiency and has identified that computer modeling techniques and the use of prefabricated components can help reduce times, costs, and minimise defects and problems of on-site construction. This paper describes a virtual environment to ...

Keywords: modular construction, prefabricated components, virtual construction environment

An Approach to Safety for a Robotic Excavator

Conrad J. Pace, Derek W. Seward
Pages 1-7

Abstract: Safety is a critical control issue for any system interacting with its environment. This paper presents an overview of such safety concerns for a robotic excavator, and how such considerations may be integrated within the system?s control framework. The provision of this integration allows the handling of safety issues at different control levels and ...

Keywords: Safety, Hazard and Risk Assessment, Hybrid Control Architectures

The Development of a Robotic System for Tool Deployment in Hazardous Environments

Khaled Zied, Derek W. Seward, John Rhiel, Anthony Dolman
Pages 1-6

Abstract: The factors that need to be present in order to justify the economic use of robotics in construction are listed. A particular prototype robotic device, StarlifterÒ, is described in some detail. A case study is then presented in which a contract to drill over a thousand holes into the underside of a motorway ...

Keywords: Construction Robotics, Kinematics, Simulation, Sensors, Tool deployment, Economics

On Site Pile Instrumentation and its Integration into the Management Process

Derek W. Seward, Stephen Quayle, Norman Mure, Jason Scott
Pages 1-6

Abstract: The paper describes how modern computer and telecommunications technology has enabled the creation of a piling instrumentation system that integrates seamlessly with the rest of the site and project management processes. The system, called SIRIS, consists of an industrial computer and sensors on the piling rig, a notebook computer used by the site foreman ...

Keywords: Pile foundations, instrumentation, automation, sensors, GSM modem, user interface, site information control

Construction of Three-Dimensional Models for Structural Objects from Tomographic Images

Kevin Kuang-Hui Tseng, Ping Lu
Pages 1-7

Abstract: In this paper, a new surface-based modeling algorithm is presented to construct 3D models of structural objects from 2D slices, which contain contours obtained from tomographic images. The main objective of this method is to produce the most precise possible model for branching bodies taking into consideration that the slices might be far apart ...

Keywords: Solid Modeling, Geometric Modeling, B-rep, Boolean Operations, CAD, CAE

Application of Expert System for Bridge Management in Papua New Guinea

K. M. Anwar Hossain
Pages 1-5

Abstract: This paper presents a computer aided bridge management system (CADBMS) and its implementation in the context of Papua New Guinea. The expert system includes a bridge management information system database (BMISD) and knowledge based database (KBD) logically linking all bridge parameters to the repair, maintenance and rehabilitation (RMR) options. The KBD is written ...

Keywords: Bridge, Computer aided, Economic, Expert System, Knowledge based, Implementation, Maintenance, Management, Programming

Automation of Bridge Construction by Precast Span Method in Korea High Speed Railway Project

Sung-Il Kim, Young-Nam Lee, In-Sup Kim, Won-Pyo Lee
Pages 1-4

Abstract: Large portion of Kyung-bu high-speed railway in Korea was constructed in the form of bridges or tunnels. Most of bridges were designed to be prestressed continuous concrete box girder type. The precast span method was selected for the construction of prestressed concrete box girder bridges for its merits of good quality, fast construction speed, ...

Keywords: High Speed Railway, Automation, Continuous Bridge, Precast Span Method

VHBuild:Transferring Project Management into Knowledge Management

Conrad Wong, Heng Li
Pages 1-5

Abstract: The construction industry is an information rich industry, both in terms of the information generated and exchanged amongst its participants, as well as the information it absorbs from outside sources. The effective management and delivery of information is crucial to the successful completion of a construction project life cycle. Although ...

Keywords: No keywords

The Systematic Construction Method of Kao Ping His Cable-Stayed Bridge

Chien-Chou Chen, Hui-Hsiung Chuang, Ming-Chia Ko, Tung-Hung Tsai
Pages 1-7

Abstract: Kao Ping Hsi cable-stayed bridge, which is purposely designed to be the landmark in the southern Taiwan after completion, is a single plane and single pylon cable-stayed bridge with an asymmetrical hybrid girder system composed of a 330m steel-girder main span and a 180m PC-girder side span. The construction of the bridge was ...

Keywords: Kao Ping Hsi, Cable-Stayed Bridge, Construction Method, Construction Plan, Construction Schedule.

Taiwan Trackwork Development - Nonballast Track System

Relon J. T. Chen, Tzu-Wei Wang, Kuan-Yung Chang, Sy Chang
Pages 1-7

Abstract: The railway system with its high capacity, low energy consumption, comfort and punctuality now is the main stream of the inland transportation system around the world. The high cost and heavy load of the maintenance work of the traditional ballast track system have attracting the attention of the recent studies. The results of ...

Keywords: No keywords

The Technological Innovations of the Disaster Command Center Based on the Experience of the Ji-Ji Earthquake

Tsung-Hsien Chen, Ban-Jwu Shih
Pages 1-4

Abstract: To orchestrate future disaster relief operations, the authors had learned from their experience of the Ji-Ji Earthquake that both the equipment and the staffs need to be modernized. Also, to have a better chance to fight disasters, it is obvious that a state-of-art command center built upon the most current technologies is desired. ...

Keywords: Ji-Ji earthquake, command center, geographical information system

Worker Hazard Management of Building Demotition

Shu-Chuan Chang, Yi-Chih Chen, Kuan-Yung Chang, Walter Chen
Pages 1-5

Abstract: The Ji-Ji earthquake was the most damaging earthquake that Taiwan has ever suffered over the past century. In addition to mountain collapses, landslides, fault slippage, bridge ruptures, and roadway buckling, tens of thousands of buildings were also crushed by the powerful force of the earthquake. In the Ji-Ji earthquake, the most serious damaged infrastructures ...

Keywords: earthquakes, occupational injuries, workplace safety, building demolition

Computer-Aided Decision Support System for Safety Monitoring of Geotechnical Construction

Min-Yuan Cheng, Amos Chien-Ho Ko, C. H. Chang
Pages 1-7

Abstract: This study endeavor focuses on developing a decision support system for safety monitoring of foundation constructions. According to statistical investigations, foundation excavation is the most construction activity apt to causing construction accidents. In all geotechnical engineering work, it is clear that there will be discrepancy between prediction and performance. Consequently ...

Keywords: geotechnical construction, foundation excavation, safety monitoring, decision support system, instrumentation program, fuzzy sets theory.

Construction Operation Simulation Tool - Cost

Tao-ming Cheng, Shien-Tang Wu, Yi-Wei Tseng
Pages 1-4

Abstract: As a simulation methodology, CYCLONE has been widely used in the design and analysis of construction operation for over the last 20 years. MicroCYCLONE, as the implementation computer program of CYCLONE, had a great contribution in the promotion of CYCLONE. However, MicroCYCLONE is a DOS-based program and has not been improved since the existence ...

Keywords: Construction Operation Simulation, CYCLONE Methodology, Fuzzy Set Theory, Fuzzy Data.

The Application of Geographical Information System on Disaster Mitigation and Management

Tsung-Min Cheng, Shih-Chung Huang, Shih-Hsin Zeng
Pages 1-4

Abstract: In recent years it has become a trend to use the Geographical Information System (GIS) for disaster mitigation and hazard prevention. The GIS can quickly and efficiently process large amount of spatial data and their attributes. When deployed, it is a valuable tool for decision supports and in-disaster responses, and it can facilitate ...

Keywords: disaster mitigation, geographical information system

Facility Risk Management of Common Conduits

Wend-der Yu, Yi-Meng Cheng, Cho-fu Wu, Shih-shiuh Wang
Pages 1-6

Abstract: Common conduits are indispensable for the populous metropolitans and the advanced industrial parks, such as the Hsinchu Science-Based Industrial Park. The various pipelines in the common conduits serve not only as the nerve system but also the circulating system of the industrial parks. The maltiple functions of the common conduits may affect not only ...

Keywords: Common conduits; Risk management; Risk quantification

Global Non-Ballasted Rail Fastener Development Base on Taiwan Experience

Yao-Chung Chiang, Kuo-Hsiung Cheng, Sy Chang
Pages 1-7

Abstract: Taiwan has been active in construction new railway system in recent years and, furthermore, several old railway systems are undergoing overhaul. The trackwork engineering will be one of the major key to decide whether the railway was successful or not, Now-a-day, All the railway systems in the world are concentrating on improving the trackwork ...

Keywords: non-ballasted track, ballasted track, direct fixation rail fastener (DFF), insert loss, fail-safe

A Virtual Reality Environment for Construction Simulation

Mao-Lin Chiu
Pages 1-6

Abstract: This paper depicts the approach of constructing a virtual reality environment for simulating building construction operations. The virtual environment is established to demonstrate the constructability of building during the building delivery process. Particularly, the functions such as navigation of construction sites, simulation of construction operations, and evaluation of construction details will be critical to construction ...

Keywords: Virtual reality, computer simulation, office buildings, construction operations

Insights of FPLM for Long-Viaduct Construction in Taiwan High-Speed Railway Project: Overcoming the Interfaces

Sou-Laung Chiu, Wen-Bin Kang, Jerry Chou, Pi-Chu Chiu
Pages 1-6

Abstract: The FPLM, Full-span Precast and Launching Method, is selected as the main construction method for the long viaducts in the Taiwan High-Speed Railway (THSR) project. In order to maximize the advantage of this method, ?design for construction? should be emphasized. It means that construction knowledge and experience should be taken into consideration among ...

Keywords: FPLM, viaduct, high-speed railway, interface, time and cost effectiveness, constructability, box-girder, precast, MSS

Automated Schedule Advisory System

Ren-Jye Dzeng, Hsin-Yun Lee
Pages 1-6

Abstract: Planning and scheduling is one of the key factors to the success of a construction project. Because of the increasing complexity and size of construction projects nowadays, preconstruction schedules tend to comprise a large number of activities. These schedules often contain unintentional errors and conflicts, and those due to the lack of experience. ...

Keywords: Planning, Scheduling, Case-Based Reasoning, Expert System, Critique

Using Genetic Algorithms to Optimize the Dispatching Schedule of RMC Cars

Chung-Wei Feng, Hsien-Tang Wu
Pages 1-6

Abstract: Effective and efficient dispatch of Ready Mixed Concrete (RMC) cars to construction sites is an important issue for both RMC plant and construction site managers because of the timeliness requirement of RMC. To develop an efficient utilization plan for dispatching RMC cars, RMC plant manager must consider both timeliness and flexibility while meeting the ...

Keywords: Optimization, Genetic Algorithms, RMC Cars Dispatching

A Decision Support System for Space Conflict Resolution in Building Construction

Sy-Jye Guo, Chun-Ta Wu
Pages 1-7

Abstract: Numerous workers, equipment, material, temporary facilities and permanent structures share or interfere with the limited space during the construction period. The site layout and space planning has been a significant and complex problem for construction engineers. This research established a set of procedure and criteria for identifying and resolving space conflicts. A computer-based decision ...

Keywords: Space, planning, conflict, resolution, DSS

Optical Technology for Pipeline Condition Assessment

Chiwan Hsieh, Tsung-Shen Liao, Tom Iseley, Hiromasa Shima, Ming-Wen Hsieh
Pages 1-6

Abstract: This paper discusses how optical imaging technology has transferred from the oil and gas industry to the sewer pipe inspection industry to become known as the Sewer Scanner and Evaluation Technology (SSET). The first generation of the innovation system was developed in 1996, and the system was expanded and advanced to the second-generation system ...

Keywords: No keywords

PIAS : A Citis-Based Information Sharing System

Tsung-Heng Liu, Shang-Hsien Hsieh, Yie-Ting Chen, Choung-Houng Wu
Pages 1-7

Abstract: CITIS (Contractor Integrated Technical Information Service) is a standard originated from the U.S. Department of Defense. It defines a set of functions for sharing contractually required digital information between the owner and contractors. This research develops a project-oriented information sharing system, named PIAS (Project Information Acquisition Service), which supports not only CITIS functions for ...

Keywords: CITIS, Workflow, Information Sharing, Object-Oriented, Distributed System

Construction Planning for Gang Formwork Reuse Using Simulation

Rong-Yau Huang, Kuo-Shun Sun, Jeam-Jei Chen
Pages 1-9

Abstract: Concrete formwork is a labor-intensive and time-consuming operation. Many modular formwork systems have been developed to automate the formwork construction and to improve its productivity and cost effectiveness. Usually, proper planning in architechtual design of building, form reuse scheme, resource allocation (modular form sets, cranes, workers, etc.), and construction sequence is required to ensure ...

Keywords: Construction, Planning, Formwork, Simulation

Monitoring and Supporting System for Hazard Mitigation

Shih-Chung Huang, Tsung-Min Cheng, Shih-Hsin Zeng
Pages 1-3

Abstract: Information, communication and controlling technology play important roles in disaster rescues. Referring to the needs of a disaster rescue, this article outlines the structure needed for a Monitoring and Supporting System. It is hoped that such a system will improve the efficiency of the Disaster Command Center and the management of field rescue operations.

Keywords: monitoring and supporting system, hazard mitigation, rescue operation

Augmented Integrated Fuzzy Neural Network Learning Model in Structural Engineering

Shih-Lin Hung, C. C. Jan
Pages 1-6

Abstract: Solving engineering problems is a creative, experiential process. An experienced engineer generally solves a new problem by recalling some similar instances examined before and applying what he learned from the present problem, through adaptation or synthesis. According to such a method, the IFN learning model was developed and implemented as a computational model for ...

Keywords: Neural Networks, Supervised Learning Models, Unsupervised Fuzzy Learning Model, Structural Design

Emergency Roadworks and Suggestions to Improve the Occupational Safety after the Ji-Ji Earthquake

Chung-Wei Chen, Jui-Huang Hung, Walter Chen, Kuan-Yung Chang
Pages 1-6

Abstract: It is found that most road damages triggered by the Ji-Ji earthquake occurred in the Taichung City, the Taichung County, and the Nantou County. The main causes for these road damages are landslides and rockfalls. Therefore, in the emergency roadwork to repair these roads it is not only necessary to remove the debris ...

Keywords: slope failures, Ji-Ji earthquake, monitoring systems, labor safety

Scaffolding System for Construction of Elevated Water Towers

Chyuan-Hwan Jeng, S. H. Ju, Y. L. Mo, I. K. Fang
Pages 1-6

Abstract: There will be four elevated water towers in Tainan Science-based Industrial Park (TSIP) in southern Taiwan, as this project is totally completed. During the construction of one of the four elevated water towers, it was found that the cost of the scaffolding system could be as high as one fifth of the total ...

Keywords: Scaffolding system, elevated water tower, construction, FEM, user interface

Computer-Aided Decision Support System for Disaster Prevention of Hillside Residents

Min-Yuan Cheng, Amos Chien-Ho Ko
Pages 1-7

Abstract: This study endeavor focuses on developing a computer-aided decision support system for hillside residents to prevent the occurrence of hillside disaster. Living safety is an essential consideration for the hillside residents. Within this system, the checklist used by personnel or instrument monitoring is adapted for collecting hillside data. Applying fuzzy sets theory, the ...

Keywords: disaster prevention, fuzzy sets theory, safety monitoring, causes diagnosis

Optimum Construction Resource in Space, Time and Cost

Chin-Chih Kuo, Ren-Jye Dzeng
Pages 1-6

Abstract: The article summarizes the overall idea of the study and presented the results of the first stage -- "simulation visualized of construction schedule". At present, we have corresponded and combined the CPM network diagram and the 3D object model for dynamic presentation. This kind of 4D dynamic diagram always simulates the 3D outlook ...

Keywords: spatial resource, time-cost trade off, geographic information system (GIS), genetic algorithms (GA), 4D dynamic diagram, 3D object model

The Characteristics of Surface Ruptures and Landslides in the Chi-Chi Earthquake of September 21th, 1999

Wen-chi Lai, Yen-Chiu Liu, Miing-Lang Huang, Ching-Weei Lin, Chjeng-Lun Shieh
Pages 1-5

Abstract: The Chi-Chi, Taiwan Earthquake provides an exceptional opportunity to study surface rupture of an earthquake fault. Detailed maps of the lateral distribution of fracturing adjacent to main traces show the different amount of offset and the slip rational in vertical to lateral. The maximum value of offset is up to 10 meters and ...

Keywords: The Chi Chi Earthquake, Surface Rupture, Landslide

The Searching Mechanism of Artificial Neural Networks in Case-Based Building Design

Ju-Hung Lan, Mao-Lin Chiu, Chien-Hung Wei
Pages 1-6

Abstract: A Case-based reasoning (CBR) system generally includes three parts: case recall, case adaptation, and a case library. The objective of this research is to develop a searching mechanism for the case recall of a CBR system in the context of building design. Our work focuses on developing the similarity relationship among building design ...

Keywords: Artificial Neural Network, Case-based Reasoning, Building Design

An Integrated System for Automatic Bridge Planning

Jean-Shiann Lee, Nie-Jia Yau, Aviad Shapira
Pages 1-8

Abstract: At the early stage of bridge design, many factors are considered before determining the bridge's geometrical alignment and length of spans, which have great influence on the construction method and costs. Traditionally, the alignment and spans are determined based on the design engineer's experience. However, the resulting design, though feasible, may not necessarily be ...

Keywords: automatic system, bridge planning, expert system, object-oriented programming, spatial analysis

Automatic Management of the Widening Project of the Chungshan Freeway

Shoei-Lian Fang, Pin-Song Lin, Thay-Ming Lee
Pages 1-7

Abstract: Besides introducing every kind of implementation of quality control institution leading to automatic management implemented by this Bureau in recent years, the management system also leads in the widening project of the Chungshan ( NH1 ) Freeway executed by stages. By the performance of the standard and systematic quality management institution, we can keep ...

Keywords: quality control; standardization;s ystematization; three grades quality Control; three steps and four grades quality control

A Planning Multi-Level Bridge Management System for Taiwan

Yeou-Fong Li, Shang-Hsien Hsieh, Chi-Chang Chan
Pages 1-5

Abstract: Bridges are the most important components in expansive transportation networks. And bridge management systems (BMS) have been developed to help government agencies maintain the bridges in their districts. However, bridge management systems vary with the different bridge types and the different management requirements for each maintenance level. The multi-level framework of a set of ...

Keywords: Bridge management system, Information system

A Management Information System for the Supervision of Highway Construction Projects

Yueh Liang, Fu-Yih Shih, Chih-Hsiung Wu
Pages 1-6

Abstract: A management information system for the supervision of highway construction projects has been designed and implemented by using the Microsoft Visual FoxPro. The implemented system is so helpful that the top management officials of the Highway Bureau can fully have all the construction projects under control.

Keywords: management information system, database management

Integrated Information Systems for Highway Management

Yueh Liang, Tsai-chu Wang
Pages 1-6

Abstract: The twenty-first century is a century that combines information and communication technology. Through upgrading information and communication technology, messages will be conveyed easily and, thus, affect road-user?s life directly. The Taiwan Highway Bureau engaged in general censorship operation by combing GPS and GIS, and based on geograph information system of highway engineering facilities to ...

Keywords: censorship operation, global positioning system (GPS), geographic information system (GIS).

Electronization of Government Procurement System - Tendering via Internet

Tsung-Shen Liao, Chih-Ming Huang, H. Ping Tserng
Pages 1-9

Abstract: In order to make the government procurement efficient, transparent, nondiscriminating, and accountable, the electronic government procurement system is the solution. Accordingly, the Article 33 of Government Procurement Law (GPL) provides that the suppliers may use electronic devices to send the tender. This paper demonstrates how the electronic government procurement system works and how it can ...

Keywords: Certification Authority, Payment Gateway , Government Electric Procurement System CA, Government CA, Public Key Infrastructure.

Observation and Assessment of Failure Reasons of Earthquake Damage to Buildings

Cheng-Ping Lin
Pages 1-7

Abstract: Because many people are killed by the collapse of buildings in great earthquakes such as the Chi-Chi earthquake in Taiwan, a very important issue in reducing the total death toll in earthquakes is building safety. The period of these collected earthquakes is from 1906 to 1999 and the areas cover all over the ...

Keywords: Earthquake, Collapse of buildings

A Total Solution for Disaster Prevention in the Internet Era

Cheng-Ping Lin
Pages 1-6

Abstract: To prevent disaster, security staffs shall ensure the safety of everyone in the buildings through monitoring and controlling important facilities properly from the security control room. However, most of them could not perform their duty during tragic disasters such as a great earthquake or conflagration. There?s every reason to believe that they did not ...

Keywords: A total solution, Internet era, Disaster prevention

A Computerized Substructure Construction Planning Approach

Kuo-Liang Lin, Kuei-Yen Chen
Pages 1-7

Abstract: This paper presents a computerized planning approach to optimize substructure construction sequence for medium to high rise buildings in restricted urban areas. Common substructure construction alternatives include traditional excavation and strutting method, top/down method, and ?go over next slab? method. Since different alternative may result in different construction cost and duration, the best alternative ...

Keywords: computerized planning, construction method, substructure construction, excavation, top/down construction

The Research of Automatic Concrete Placing

Lee-Kuo Lin
Pages 1-5

Abstract: Construction is a dynamic process that is becoming increasingly complex. Today?s construction industry is a highly diversified operating in a complex society. Concrete placing is one the most laboring activities in each construction job-site. How to improve the placing productivity with automatic technique will be an effective study. This paper is trying to present ...

Keywords: Concrete placing, Construction job-site, Placing productivity, Automatic concrete placing, Construction automation

Automatic Hazard Inspection Management System of RC Building

Lee-kuo Lin, Chen-You Jian, Jinn-Ting Huang
Pages 1-6

Abstract: There are lots of potential hazardous areas in Taiwan due to high-density land-use and construction building. Up to today, every city area in Taiwan is still continuously expending. Natural disasters such as earthquake, typhoon, flood etc. are happened from time to time within all year long. In addition, based on the high density ...

Keywords: Hazard inspection, Hazard prevention, Inspection management system, RC building, Database

Construction of GIS and Database for Debris Flow Potential Study of Chen-You-Lan River Watershed

Meei-Ling Lin, Yen-Hsu Lu
Pages 1-6

Abstract: The problems caused by debris flows are becoming more and more serious in Taiwan. In order to perform the risk assessment for hazard mitigation, the database of debris flow rivers of Chen-You-Lan Watershed was constructed. The potential factors as well as the natural environmental data of debris flow river and basin were built ...

Keywords: debris flows, the potential factors, GIS, database

Applying Genetic Algorithm on Selecting Emergent Medical Station before Disasters

Ming-Der May
Pages 1-8

Abstract: This study applying a mathematical approach to select facilities for the emergent rescue plan before the natural disasters, such as earthquakes, typhoons and floods. The hazardous area is divided into sub-area by the capacity of medical treatments and the distance between the habitants, and the emergent medical station is located at the position ...

Keywords: capacitated clustering problem, genetic algorithms, binary coding, adaptive penalty function, medical station location

A Study of GIS Based Decision Support System on Prioritizing Yearly Planning of Drainage Engineering in Taichung County

Nai-Hsin Pan, Wen-Zon Chang
Pages 1-6

Abstract: Due to financial constraints of local governments, budgeting public work projects can be highly politicized affairs. But as the economy grows, people are demanding higher standards of government service and want public works projects performed using only objective and scientific methods. This study uses overall evaluation and Delphi methods as well as non-probability questionnaires ...

Keywords: Multicriteria evaluation, management information system, geographic information system

Safety Performance of One-Layer Shoring Systems Used in Construction

J. L. Peng, I. M. Shih
Pages 1-7

Abstract: This paper presents the safety performance of one-layer shoring systems of wood and metal post-shores. The test results indicate that the base stiffness to ground of shores is 50 tonnes-cm/rad for wood post-shores and 70 tonnes-cm/rad for metal post-shores. The system critical loads increase with the numbers of strong shores, but are not ...

Keywords: Falsework, Construction, Leaning column, Post-shore, Shoring

The Search and Rescue Operation in Collapsed Buildings Caused by Earthquakes - A Case Study

Lih-Ren Sheu, Ban-Jwu Shih, Chuan-Wei Wu
Pages 1-4

Abstract: This paper uses the experience from the search and rescue operation at the Dong- Xing Building, which collapsed in the Ji-Ji Earthquake, as a real example to study the risk factors that contributed to the deaths of the residents of the collapsed building. This paper also examines a possible strategic plan to rescue ...

Keywords: search and rescue, building collapse rescue, Ji-Ji earthquake

The Application of Computer in Construction Contract Management Automation

Yan-Chyuan Shiau
Pages 1-5

Abstract: Contract Management is an important issue in Construction Industries. We need to exactly discuss every detail, agreement and write them precisely on paper to ensure subcontractors can construct project correctly. In CCMS (Construction Contract Management System), when we key in some necessary information, it can automatically generate the whole contract document. This system can ...

Keywords: Contract Management, Automation, and Construction Management

The Disaster Mitigation and Management Strategy for Bridges

Ban-jwu Shih, Kun-Chung Wu
Pages 1-4

Abstract: This article aims at the needs for bridge disaster-prevention and repairs in Taiwan. It discusses disaster-prevention planning and establishes a Geographical Information System (GIS) database which has the capability of spatial analysis and visual display to form a dynamic real-time disaster-prevention management system. The GIS database contains the bridge inventory data module, the periodical ...

Keywords: disaster mitigation, geographical information system, GIS, bridge disasters, emergency repairs

An Application of Virtual Reality Formats in Managing Visual Information of Earthquake Damaged Sites

Naai-Jung Shih
Pages 1-6

Abstract: The purpose of this paper is to present an application of virtual reality (VR) formats in environmental information management which could have facilitated the retrieval and illustration of damaged site information during Taiwan 921 earthquake. Disadvantages in data collection are listed. The comparison of data types lead to the demand for the collection of ...

Keywords: 921 earthquake, virtual reality, visualization

Evaluating High-Speed Rail System in BOT Scheme by Economic Status in Taiwan ROC

Chi-Lyang Shing, Yu-Min You
Pages 1-5

Abstract: This is a research funded by National Science Foundation NSC 89-2815-C-032- 012-E The Build ? Operate - Government largely emphasizes Transfer strategy. Officials and academicians. Yet, no successful examples can be found in Taiwan until year 2000.The High ? Speed - Rail. BOT system could be number one case on this island.This paper will investigate ...

Keywords: Build-Operate-Transfer, High-Speed-Rail, Cost Overrun, Schedule delay Taiwan HSR and its Costs

Application of Image Analysis on Tunnelling in Gravel Formations

Keh-Jian Shou, Chia-Tsung Wu
Pages 1-5

Abstract: Gravel formations are widely distributed in Taiwan area, especially at the western terraces and foothills of the Central Ridge. The gravel formations are composed of a composite geomaterial which is mainly consisted of different sized gravels and different types of soils. Their engineering properties are quite different not only with each other but ...

Keywords: gravel formations, tunnelling, image analysis

Study of Emergency Communication System

Chin-En Su, Ban-Jwu Shih, Kai-Wen Luo
Pages 1-8

Abstract: After the Ji-Ji earthquake, almost all communications were paralyzed. Therefore, the damage reports could not be collected quickly, and the rescue effort could not be initiated responsively. This clearly demonstrated the urgent needs to establish a disaster communication system that serves as the nerve center of disaster mitigation. It requires the design and incorporation ...

Keywords: Ji-Ji earthquake, emergency communication system, disaster mitigation

Demolition of Abandoned Basement in Congested Urban Area

Jiin-Song Tsai, Lee-Der Jou, Fu-Chen Liu
Pages 1-6

Abstract: This paper presents two cases of basement demolition in built-up urban area. Micropiles in conjunction with proper groundwater drawdown using well points are adopted in the first case as temporary retaining during the period of basement demolition and removal. Watertight sheet piles with internal bracing struts are used in the second case to resist ...

Keywords: basement demolition, deep excavation, congested urban area, displacement method, replacement method, micropile, sheet pile, diaphragm wall.

Establishment of Network Infrastructure for Public Construction Purchase Electronization in Taiwan

Sherman Li, Ho-Hsiung Yang, Hsueh-Wen Chiang, Hui-Ping Tserng
Pages 1-10

Abstract: Reasonable and up-to-date construction cost data is essential for budget making, bidding, and auditing in the construction industry. Generating a construction budget is a highly professional task and usually takes substantial time and man-hours to collect project cost data. Hence, it is always a critical point for the construction industry to set up ...

Keywords: PCC, TCRI, Construction Cost Survey, Survey Mechanism, Public Construction Technical Database, Construction Cost Database, Dynamic Web Page, XML

3D-Optical Deformation Measurement and its Automation Application in Tunneling

I-Te Wang, Sung-Mau Lin, Jing-Wen Chen
Pages 1-4

Abstract: The New Austrian Tunneling Method (NATM) is spreading out fast over Taiwan to tunneling, the measurements of deformations are an integral part of NATM. The paper will discuss the 3-Dimensional optical measuring system developing by Europe used in Chung-Liao Tunnel, the first soft rock tunnel of Taiwan Second Southern Freeway in southern Taiwan, to ...

Keywords: 3D-optical deformation measurement, NATM, tunneling, convergence, monitoring

Study on Urban Rail Rapid Transit Accidents Prevention and Hazards Identification

Lung-Chuang Wang
Pages 1-10

Abstract: In comparison with the other transportation modes, rail rapid transit already enjoys a higher degree of safety as it is designed with the exclusive right of way and the automatic train control and monitoring systems. Nevertheless, rail rapid transit systems are not free from serious accidents, which often led to human injuries and ...

Keywords: Rail Rapid transit, Accidents analysis, Hazard identification, Accident causation, Case study

Performance Evaluation of Automation Development of Construction Sector in Taiwan

Ming-Teh Wang, Chen-Kang Su
Pages 1-5

Abstract: Since 1990, the ROC government has promoted a 10-year plan of Industry Automation to provide guidance for the automation development of various industries. The construction industry is one of them. According to this plan, in the last decade, the government has invested more than US$15 million and adopted tax reduction, interest subsidy of loan ...

Keywords: Automation, Production function, Technological progress

Object-Oriented Construction Scheduling

Su-Ling Fan, M.T. Wang
Pages 1-7

Abstract: Current network techniques presume that there is only one logical sequence of the activities in a project, therefore planners need to choose one particular logical sequence of the activities even if there is more than one possible sequence. This may request engineers expend many work hours to update the variable relationships between activities ...

Keywords: logic changes, scheduling, object-oriented

Simulation of Structural Steel Erection Operations - A Case Study

Ming-Cong Li, Yu-Ting Lai, Shu-Pin Chang, Yu-Lin Huang, Wei-Chih Wang
Pages 1-10

Abstract: In the past decades, several simulation models have been developed to analyze the performance of construction projects and site operations that are fraught with uncertainty. Due the lack of successful practical examples being report, however, the construction industry still has a doubt in using simulation techniques. For this reason, this paper presents a simulation-based ...

Keywords: simulation, structural steel erection, construction operations

Representations of Building Design Process with Iterations

Tzong-Shiun Liau, Wei-Chih Wang
Pages 1-6

Abstract: Design has an inherently iterative nature, especially for multi-disciplinary building design projects. Managing the design process with the consideration of this iterative nature needs to cluster the complex dependencies between design tasks and information delivered between design disciplines and to represent it in a communicable way. This paper uses modified IDEF0v notations to capture ...

Keywords: design management, multi-disciplinary design task, design iteration, delivery system, and iterative design cycle

Automatic Representation of Construction Interfaces

Yu-Ting Lai, Wei-Chih Wang
Pages 1-7

Abstract: The interface problems are usually not resolved or even detected until the construction activities proceed to their execution stage. Some interface problems may be resolved by just rearranging the locations of work elements, some may degrade the designed function of elements, and others may not be resolvable. To overcome the difficulty of discovering ...

Keywords: interface elements, interface links, interactions, construction schedules

A Study of 3D Spatial Model of Urban Mixed-Use Visual Simulation in Taipei City

Kuo-Chung Wen, Tsung-Hsing Huang
Pages 1-5

Abstract: In the past years, computer visual simulation is more important in many research domains. Architect and developer can easy estimate architectural design in specialized field with tools of computer-aided design (CAD). But it is not enough for urban planning and design. Because a real urban environment must links to other spatial information. Besides, the ...

Keywords: Spatial Data Model?Computer Visual Simulation?Urban Simulation

A Study of Automatic Layout Design by Genetic Algorithm Approach

Kuo-Chung Wen
Pages 1-4

Abstract: This research has shown the difficulties associated with the design information and the search through the huge design space generated during the design process. This research presents an approach to these problems by utilizing a search process whose concept is derived from natural genetics. Genetic algorithms (GAs) have been introduced in the optimization problem ...

Keywords: Computer Aided Architecture Design (CAAD), Genetic Algorithms (GAs), Layout Design.

A Study of Computer Aided Layout Design in Taipei Primary School by Hierarchical Artificial Neural Network Approach

Kuo-Chung Wen, Hsiung-Leng Chen
Pages 1-6

Abstract: Architecture layout design is diversified and complex problem. But designers usually can find out the answer with hierarchical and sequence schema effectively. However, earlier computer-aided architecture design, which problem solving only by binary-logic thinking is very different from human being. The pass decade Artificial Neural Network (ANN) is one of methods that process data ...

Keywords: Layout Design, ANN, CAAD, Hierarchy

The Behavior of Ultrasonic Waves Propagating in Concrete Using the Ultrasonic-Pulse Methods to Measure the Depths of Cracks in Concrete

Chi-Hsing Wu, Jiung-Yuan Wang
Pages 1-6

Abstract: With a system of two sensitive accelerometers connected to a high-resolution of oscilloscope, the paper proposed an arrangement of accelerometers to monitor the pulse waves generated by an ultrasonic transducer when performing a surface measurement on concrete. The velocities of the logitudinal wave (the P-wave) and the Rayleigh wave (the Rwave) were estimated by ...

Keywords: Ultrasonic, Nondestructive, Cracks, Elastic Wave, Rayleigh Wave

The Study of Using Self-Learning Neural Network in Automatic Construction-Site layout

Ping-Tsang Yang, Shu-Ling Lu
Pages 1-7

Abstract: A good construction-site layout plan could directly or indirectly save construction cost and improve on construction efficiency; the larger of construction project or higher of construction overlapping is, the more important of construction-site layout is plan. Moreover, today?s constructive automatic technique reaches a specific degree; the application of automatic technique in construction-site layout plan ...

Keywords: Construction-Site Layout Plan, Scientific Management, Artificial Neural Network, Self-Learning Neural Network

The Automatic Layout Model in the Sequencing of Construction Activities of Multi-Objective Diaphragm Wall Unit by Using Self-Learning Neural Network

Ping-Tsang Yang, Shu-Ling Lu
Pages 1-8

Abstract: Foundation construction process has been an important key point in a successful construction engineering. The frequency of using diaphragm wall construction method among many deep excavation construction methods in Taiwan is the highest in the world. The traditional view of managing diaphragm wall unit in the sequencing of construction activities is to establish each ...

Keywords: Diaphragm wall, Layout problem, Optimal combination, Artificial Neural Network, Self-Learning Neural Network

Fire Prevention Strategy for Buildings in Construction

Chunshing Yeh, Ban-Jwu Shih, Chuan-Wei Wu
Pages 1-5

Abstract: The purpose of this paper is to raise the standards of construction quality and to promote a safer construction environment for the working labor. So far, very little work has been done in this field in Taiwan. Therefore, this research will focus on case studies to determine the most likely factors that give ...

Keywords: fire hazard, construction, case studies, risk factors, construction fires

Continuous Constructability Knowledge Acquisition with Fuzzy Knowledge-Based Failure Mode and Effects Analysis

Wen-der Yu, Miroslaw J. Skibniewski
Pages 1-6

Abstract: Constructability analysis and the resulting adjustments in facility design have a significant potential in improving cost effectiveness of construction projects. However, traditional constructability knowledge acquisition techniques are the key barrier to successful constructability improvement. A new approach to automated constructability lessons-learned documentation and constructability analysis is presented, building upon elements of constructability analysis and improvement ...

Keywords: Constructability; FMEA; ISO; Fuzzy Knowledge-Based Systems

The Study of Safety Survey Expert System for Reinforced Concrete Structure

Chun-Hsiung Huang, Lee-Kuo Lin
Pages 1-5

Abstract: Under the island-type climate in Taiwan, reinforced concrete (RC) structures grow old with time and develop symptoms of cracking and peeling off. Therefore the survey and evaluation of the durability of such structures has become an indispensable concern. Factors that influence the durability of reinforced concrete include the materials used, there relative proportion of ...

Keywords: Concrete, Durability, Corrosion, Carbonattion, Safety survey, Expert System

Logic-Based Approach for Evaluating Change Impacts

Wei-Chih Wang, Ya-Ling Chiu
Pages 1-6

Abstract: As the complexity of a construction project increases, the occurrence of changes becomes unavoidable. In addition to the direct impact, a change may also have consequential impact (ripple effect) on the performance of project duration and cost. Built on a schedule network, this paper proposes a model, called LOGIC that uses a logic-based (including ...

Keywords: changes, hard logic, soft logic, causal logic, consequential impact

Applying Radio Direction Finding System for Improvement of Horizontal Directional Drilling Method

Ting-ya Hsieh, Aviad Shapira, Ming-Chang Wu
Pages 1-6

Abstract: This study improves the horizontal directional drilling method (HDD) by using an autonomous land vehicle (ALV) with a radio directional finding (RDF) system. The ALV with an RDF system carrying a digital positioning device can locate a moving or static underground drill bit and track it. Not limited to a pre-determined track or ...

Keywords: ALV, HDD, Trenchless, Construction Automation

The Integrated Construction Management Information System Application for Construction Supervision Projects

Kwo-Jen Liao
Pages 1-6

Abstract: The purpose of this paper is to introduce the Integrated Construction Management Information System (CMIS) application to typical construction supervision projects. Even though some of the engineers working at the job site have computers to compile their data or handle their documents, it is still not easy for them to transmit their engineering ...

Keywords: No keywords

Automatic Supervision and Management of Construction Schedule for BOT Project

Cheng-Dao Kuo, Wen-Chia Wu, Jiunn-Jyi Chen, Cheng-Yu Chang
Pages 1-6

Abstract: This paper introduces how an automatic system for supervision and management of construction schedule was established to monitor the High Speed Rail BOT Project in Taiwan. With the application of P3 and PDA through e-mail, field sites, field offices and headquarters can be linked together so that information can be transferred, shared and updated ...

Keywords: No keywords

Development of Computerized Maintenance Management System for Rail Transportation System

Chun Sheng Hsu, Roger L. Sun, Konrad S. T. Tzeng
Pages 1-4

Abstract: Applying a computerized on-line maintenance effort to decrease maintenance cost and increase maintenance quality is the pursuing objective of modern rail transportation (MRT) corporations. This report aims to introduce the approaches that merges together the MRT operational strategy and the integrated logistics support (ILS) concept into a computerized maintenance management system (CMMS). By effectively using ...

Keywords: No keywords

An Accelerated Subcontracting and Purchasing (ASAP) Model for Construction Projects Unsing XML/XSL Standards

Pao H. Lin, H. Ping Tserng
Pages 1-8

Abstract: Based on the characteristics of highly specialized corporation in construction industry, it's a very crucial and important practice to select appropriate subcontractors to implement specific subprojects. In this research, the overall subcontracting supply chain of a construction project is considered as a global procurement system and an optimal combination of subcontractors can be obtained ...

Keywords: E-Commerce (EC), Subcontracting, XML, XSL, Quick Response, Supply Chain Management (SCM)

The Promotion and Development of Construction Automation Technology in Taiwan

Yen Wei, Jenn-Chuan Chern
Pages 1-7

Abstract: For the past decade, Taiwan?s construction industry has faced several challenges. The shortage of labor, increasing environmental consciousness, the competition of foreign construction firms, and the necessity to increase productivity are among the major concerns. In response to these problems, construction industry was included as one of the many industries targeted to promote and practice automation under the ten ...

Keywords: No keywords

Automatic Construction Site Management with Aerial and Close Range Photogrammetry

Ching-Lung Liao
Pages 1-4

Abstract: Aerial photos and engineering blueprints developed in a related database can be used for facilitating construction site management by their distinct contrast features. The contrast would be much more distinguishing through the 3D spatial factors. The 3D spatial factors are mostly from the aerial photos and close range image by means of image ...

Keywords: No keywords

Application of Integrated Programme/Resource Management Systems for Major Construction Projects

Zhang Wei
Pages 1-9

Abstract: Programme and resource management are two important factors to the successful implementation of projects in the construction industry. Historically, however, project resources are managed in isolation from the project programme, typically by accounting means. The shortcoming of this approach is they are not ?activity based? and therefore only record the past performance and do ...

Keywords: No keywords

Information System for the Safety of Construction of Rapid Transit Systems

Gwan-Shyong Wang, Der-Cherng Tang, Richard N. Hwang, I-Chou Hu, Fuh Gwo Wang,
Pages 1-3

Abstract: It is vitally important to maintain the safety of construction of rapid transit systems which usually call for deep excavations in densely populated areas with very poor ground conditions. It is equally important to protect adjacent structures and properties along the routes during construction and instrumentation and monitoring are routinely carried out to achieve ...

Keywords: instrumentation, Rapid Transit, MRT, construction, alert, database, monitoring, computer, safety

GPS Application on Huge Construction Project- A Feasibility Investigation for Taipei MRT Long-Term Network

P.Y. Chang, C.J. Chang, Martin W.Pei
Pages 1-3

Abstract: With numerous large-scale underground construction projects continuously carried out in Taiwan in recent years, a huge amount of excavated soil has been produced. However, legal dumpsites are scarce and the cost of dumping is relatively high. In order to save money, unethical contractors dumped the spoil maliciously into rivers and valleys, resulting in water ...

Keywords: Excavated soil, Dumpsite, Global positioning system (GPS)

A Bidding Model Combined Game Theory and AI Paradigms

Tao-Sheng Wu, Ming-Teh Wang
Pages 1-5

Abstract: There are many similar attributes in the behaviors of auction and construction bidding. As studied in economics, it has been widely discussed in game theory. However, game theorists may not be familiar with the subtle differences between auction and construction bidding. As an analytical framework, game theory has the merits of reducing the complication ...

Keywords: completive bidding model, neural network, fuzzy sets, game theory

Site Engineer Digital Assistant-----The Integration of Information Technology in Order to Assist Site Engineers in Processing Information at All Times and Places

Chung-Ham Yang, Yen-Hui Hsu, Chia-Li Lin
Pages 1-3

Abstract: This paper describes the ineffectiveness of current methods adopted by site engineers in processing information referred to or generated during construction. The authors propose a system-- Site Engineer Digital Assistant?that integrates promising information technology (IT) to improve current ways of data processing at construction site. This promising information technology is specified and the structure ...

Keywords: IT, Information Technology, PDA

Safety Control Mechanism for Construction Working Robots Working in Collaboration with Human Workers

Hiroyasu Ikeda, Noboru Sugimoto, Tsuyoshi Saito, Masanori Onishi
Pages 1-7

Abstract: The principle of safe working based on the safe confirmation is clarified in order to realize such a robot for construction work that can share the working space with human workers. For this purpose, a monitoring system and an intrinsically safe actuator using sensor are prepared for the constructing robot, and a safety ...

Keywords: Safety Control, Human-robot Collaboration, Ultrasonic Radar Sensor, Bumper Switch, Fail-safe, Intrinsically Safety, Actuator, MR Fluid