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Mommessin M, Cutting-Decelle A F, Dubois A M, Dubois J E

SYDOX/MATCOMP/XI: an information system adapted to the needs of construction actors

Abstract: This paper presents the SYDOX/MATCOMP/Xi French project, whose goal is to provide the construction actors with an IT-based, on-line aid for component specification and selection at different levels of the construction life cycle. We will describe the main features of the information systems (IS), then specific aspects addressed by the project. SYDOX is aimed at defining and demonstrating a prototype to access information about MATerials and COMPonents used in construction, implemented on a WWW server and focused on a restricted sub-part of construction products. We will present the work done: methodology for data structuring, structure of the IS, database structuring, user interface, use of scenarios (enabling a selection and an adaptation of the information retrieved, on the basis of a set of criteria commonly used by professionals), hypertext links towards a taxonomic structuring of the information, application to window and floor, and some perspectives for the IS.

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Full text: content.pdf (62,027 bytes) (available to registered users only)

Series: w78:1999 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.man-software (0.082411) class.retrieve (0.025832) class.represent (0.015533)
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Permission to reproduce these papers has been graciously provided by the Research Press of the National Research Council of Canada. The support of the editors, particularly Dr. Dana Vanier, is gratefully appreciated.


Obonyo E A, Anumba C J, Thorpe A

Specification and procurement of construction products: the case for an agent-based system

Abstract: This paper presents a justification for APRON (Agent-based Specification and Procurement of Construction Products). This is an ongoing research project aimed at developing an agent-based prototype system for the specification and procurement of construction products. The resulting prototype system will reduce the excessive amount of time spent acquiring information and gaining knowledge about various artifacts. This paper presents a case for deploying agents to assist specifiers and procurers of construction products. It introduces the subject of specification and procurement, highlighting the problems encountered in executing these two tasks. It also described what software agents are and distinguishes them from other closely related paradigms. The paper then presents a case for agents in the selected domain of specification and procurement of construction products. This is followed by a discussion on the features of APRON system. The paper concludes that the specification and procurements of construction products is an appropriate domain for the deployment of software agents.

Keywords: software agents, construction products, specification, procurement, Internet

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Series: itaec:2004 (browse)
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Price C

Selected features of object-oriented database technologies for static-typed building product model development

Abstract: This paper presents a methodology comprising a selection of established and new object-oriented database technologies. This methodology is presented in the context of the development of static-typed class libraries for Building Product Model (BPM) development and delivery. Having established the environment in which to develop BPMs, some important issues are discussed: the importance of correct object identification in terns of the possibilities for concurrent and distributed computing; how inter-object relationships can be safely and efficiently implemented and finally, the ways that object databases or persistency mechanisms relate to the application portability and the operating system.

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Full text: content.pdf (1,837,350 bytes) (available to registered users only)

Series: w78:1994 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.software development (0.039902) class.environment (0.011102) class.store (0.011013)
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Permission to reproduce these papers has been graciously provided by VTT, Espoo, Finland.


Q Sun, S Wu

A crowd movement and behaviour observe tool with configurable individual agents to support building layout design and event plan

Abstract: This paper presents a configurable simulation tool that can simulate crowd movement and behaviour in real time. The tool has three main features: (1) demonstrate the impact of altering building layout (e.g. size of gates, positions of corridors); (2) highlight the effects on crowd behaviour and movement by varying the crowd composition; (3) demonstrate the influence of different external factors (e.g. signs, guide people) on crowd behaviour. The simulation results can be used to help improve building layout design or optimise navigation plans. This tool takes the multi-agent system approach to build a crowd model. Each agent represents an intelligent individual in the crowd and has a unique set of parameters to distinguish it from others. Agent conducts its behaviour by combining basic steering behaviours. Steering behaviours contain steering forces that are calculated by considering surroundings (including crowd and environment objects) as well as individual parameters. All of parameters and steering behaviours are configurable in order to fine-tune the crowd and environment to fit various scenarios. Crowd are formed through interaction and collaboration between agents and environment. Crowd movement and behaviour can be observed from the real time simulator. By altering building structure layout, composition of crowd and navigation plans, crowd movement and behaviour will change accordingly. Such observations and results will provide useful feedbacks to designers and planners.

Keywords: Crowd simulation, Multi-agent system, Crowd behaviour, Decision support

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Series: w78:2011 (browse)
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Rashidi A,Brilakis I,Vela P

Built infrastructure point cloud data cleaning: an overview of gap filling algorithms

Abstract: Video captured from infrastructure scenes can be used to generate point cloud data (PCD) as a potential solution for acquiring spatial information of built infrastructure - however, video based PCD is incomplete and includes gaps, outliers and poor/non-reconstructed areas. This phenomenon has a negative impact on both visualization and measurement practices and is mainly caused by a number of reasons including insufficient coverage of all views while videotaping the scene, lack of sufficient features on uniform surfaces and possible errors in calibration, matching and optimization algorithms. To tackle this issue, researchers suggested various post processing algorithms for reconstructing missing surfaces and filling gaps/holes. This paper provides an overview on these algorithms summarize their properties in terms of efficiency, ability to work in complex geometry settings and running time. As the comparison study, three most common hole filling algorithms: MSL, GG and RFR were implemented and tested on a number of real built infrastructure scenes as the case studies. Number of generated 3D points for filling the gaps, proper distribution of points on covered surfaces and running time are three major comparison metrics has been taken into account. Results indicate that in general PML outperforms other algorithms on both flat and curved surfaces.

Keywords: Built infrastructure,triangulation,gap,Point Cloud Data,surface reconstruction

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Series: convr:2013 (browse)
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Ravi M, Bédard C

Expert validation of tall-d: a KBS for tall buildings design

Abstract: A brief overview of validation of the Tall-D knowledge-based system is presented. The objective of the validation process was to have industry experts participate and to compare the tall building design alternatives generated by Tall-D to those designed in actual projects. Two experts compared test-cases with the designs produced by Tall-D system. These design sessions also enabled the experts to critique the individual cases as well as the overall performance of Tall-D. The overall performance was evaluated through a comprehensive questionnaire on the different features of Tall-D as an automated design tool. The multi-storey test-cases used are actual buildings: Place du Canada, IBM-Marathon and 1000 de La Gauchetière, all located in Montreal. One of the test-cases and the results of the questionnaire-based validation of Tall-D are presented.

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Full text: content.pdf (182,063 bytes) (available to registered users only)

Series: w78:1999 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.synthesis (0.017653) class.analysis (0.015633) class.impact (0.013474)
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Permission to reproduce these papers has been graciously provided by the Research Press of the National Research Council of Canada. The support of the editors, particularly Dr. Dana Vanier, is gratefully appreciated.


Ruggiero Lovreglio, Vicente Gonzalez, Robert Amor, Michael Spearpoint, Jared Thomas, Margaret Trotter and Rafael Sacks

The Need for Enhancing Earthquake Evacuee Safety by Using Virtual Reality Serious Games

Abstract: Enhancing evacuee safety is a key factor in reducing the number of injuries and deaths that result from earthquakes. This can be achieved by designing safer buildings taking into account behavioral factors and by training occupants. However, traditional approaches such as evacuation drills cannot be used in buildings in which occupants cannot easily leave the building (e.g. hospitals). In addition, these traditional approaches may not provide the intended learning outcomes and do not allow for the investigation of the impact of multiple evacuation factors on behavior. Virtual Reality (VR) and Serious Games (SG), i.e. games having education (in its various forms) as the primary goal, represent novel and effective alternatives to overcome the limitations of traditional approaches.We discuss the advantages and limitations of using VR SGs to investigate how building occupants behave during earthquake evacuations and to train building occupants to cope with such emergencies. We explore the key design components to develop the VR SG framework namely (a) what features constitute an earthquake event; (b) which types of buildings can be selected and how they should be represented within the VR environment; (c) how damage to the building is to be determined and represented; (d) what factors need to be included for agent behavior in earthquakes; and (e) what level of interaction should there be between agents and the human players. We highlight the important aspects that need to be addressed in further research to effectively develop VR SG tools for earthquake evacuation training.

Keywords: Serious Game, Virtual Reality, Earthquake Evacuation, Human Behavior, Occupant Training

DOI: https://doi.org/10.24928/JC3-2017/0058

Full text: content.pdf (527,958 bytes) (available to registered users only)

Series: jc3:2017 (browse)
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S Kärnä

Gathering End-user and Stakeholder Information in BIM-based Infrastructure Projects

Abstract: Improving customer orientation has been identified as one of the major challenges in the AEC industry. A number of reports have highlighted the need for a change, greater efficiency and stronger client focus on the construction industry. Customer orientation refers to the idea that a project is only successful if it meets the needs of its intended end-users. This could only happen if customer and end-user information is connected with the project for its whole lifecycle. In the house building, where the customer is usually known beforehand, service-related tools has been developed to capture end-users needs in the different phases of the project. However, Infrastructure projects differ from house building projects in the several ways, for example, end-users are presenting a big audience and the ownership of the projects are typically public authorities. These characteristics, together with the basic features of the project management, makes difficult to exploit past experiences to the future projects. One of the major strengths in the building information modeling (BIM) is that it enhances collaboration between the team members and allows the mutual channel for information exchange. However, there is lack of knowledge how end-user and stakeholder information and requirements can utilize and gather in the systematic manner from the design phase to the maintenance phase and for the infrastructure life cycle. In a present, it is widely noted that research system in this area has been found tangled and ineffective. In this sense, BIM could be also an effective tool for gathering, storing and utilizing end-user requirements, information, and knowledge.

Keywords: Infrastructure, transport, BIM, end-user, feedback

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Series: w78:2011 (browse)
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Scheer, Se_rgio; Ayres Filho, Cervantes; Azuma, Fabi_ola ;Beber, Michelle

CAD-BIM REQUERIMENTS FOR MASONRY DESIGN PROCESS OF CONCRETE BLOCKS

Abstract: The masonry constructive technique of concrete blocks is a practice that contributes for a high level of industrialization in construction in addition to achieve the rationalization in this sector. The achievement of these benefits demands some design features such as modular coordination, blocks rows details and well documented and precise specifications. One solution to meet these design features without causing agility reduction during the process is the use of CAD-BIM (Building Information Modeling), which applies modeling and visualization techniques already consolidated in other industry branches. Although the CAD- BIM brings improvements in the design process, it does not provide tools aimed directly to blocks masonry design, what can cause difficulties. The goal of this work is to identify these problems through a case study in a builder office sited in Curitiba, Parana state, Brazil, which is specialized in building design of concrete blocks masonry. Based on the results of data collected in the case study and in the literature available was possible to develop a list of CAD-BIM requirements more suitable for this kind of design.

Keywords: CAD, BIM, concrete blocks masonry

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Series: w78:2008 (browse)
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Skrinar M

Computer package 84 - advanced sofiware package for analysis of vertical stresses and settlements of the half-space loaded with vertical loads

Abstract: m e rapid and extensive development of computers allows wide development and upgrade of some classical computational approaches. As the computer programs have been replacing graphs and tables their popularity and credibility grow. The presented paper briefly discusses some main features of a computer package 64 - advanced software for analysis of vertical stresses and settlements of the half-space loaded with a vertical load. Besides computation of stresses and settlements the package yields support at the computation of consolidation using vertical drains. The package further allows the computation of consolidation or settlements of the soil, improved with slopes.

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Series: ecce:1997 (browse)
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