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Annie Boucher, Edmond T. Miresco

Framework Of A Virtual Laboratory For Construction Project Management

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Full text: content.pdf (473,374 bytes) (available to registered users only)

Series: w78:2006 (browse)
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Chassin D P

Computer software architecture to support automated building diagnostics

Abstract: Developed by Pacific Northwest National Laboratory's Building Sciences Group, Honeywell Technology Center, and the University of Colorado Joint Center for Energy Management with support from the U.S. Department of Energy, the Whole Building Diagnostician is a Windows-based application that provides building operators with easy access to system diagnostic information. The architecture of the software infrastructure presented provides essential data collection, validation, integration, analysis, and management functions for the large sets of discontinuous asynchronous time-series data used by all the modules in the application. The proposed architecture uses a central database to store both the data and the diagnostic results from the various modules. Although the use of a centralized database has many advantages, it has several shortcomings. This paper will discuss the advantages and shortcomings of such an approach when deployed on a large scale.

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Full text: content.pdf (413,036 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 (0.033279) class.impact (0.013789) class.software development (0.011533)
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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.


Fahim Al-Neshawy, Jukka Piironen, Jari Puttonen, Tomi Laurila, Vesa Vuorinen, Mika Makitalo

The Use of ICT for Monitoring the Hygrothermal Behaviour of Building Structures

Abstract: Temperature and moisture are two of the main factors in physical, chemical and biological deterioration of building materials. Thermal gradients and movement of moisture in materials used in buildings typically cause deterioration of structures. The continuous monitoring of temperature and relative humidity provides valuable information about the long-term performance and deterioration of building structures. Documenting performance through monitoring can greatly enhance the understanding of the long-term degradation of building materials and the deterioration of the constructions due aging.The aim of this study is to develop a computerized monitoring system for building structures and test the reliability of the monitoring sensors. The study is focused on concrete building structures and consists of laboratory work and field measurements. The laboratory work focuses on designing a monitoring network system, developing a monitoring software application, assessing the reliability of the monitoring sensors, and testing of the moisture and thermally induced deterioration of concrete. The field measurements are carried out by monitoring the temperature and relative humidity of three repaired concrete facades as well as selected structures of a new school construction.The deliverable of the study will consist of two applications: (i) collecting of the moisture and thermal monitoring data and (ii) assessing the performance of building structures based on the acquired information. The results of the research will provide feasible methodologies and systems for monitoring and assessing the performance of building constructions, thus improving the quality of the final product. The scientific relevance of this research will be the improved correspondence between laboratory studies and observations of deterioration in practice.

Keywords: thermal, moisture, monitoring, assessment, building materials, sensor technology

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Full text: content.pdf (1,001,273 bytes) (available to registered users only)

Series: w78:2010 (browse)
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Ge X J, Lam K C, Cheung S O

Virtual soil laboratory: an exemplar of e-learning in construction

Abstract: Web-based teaching and learning have become increasingly popular, both for institutional and personal lifelong learning. Learning through the web enables students to structure their pace of study. In addition, the demand on resources such as educators? time and space can be reduced. The objective of the paper is to describe learning theory and how people learn through a constructivist approach. The paper also describes the development of a web based virtual soil laboratory and its realization, followed by highlighting the benefits of the system. It is concluded that the virtual laboratory is a supportive teaching aid and students have benefit from "learn how to learn" through constructivist approach of learning.

Keywords: virtual soil laboratory, constructivist approach, simulation, web-based teaching and learning

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Full text: content.pdf (495,699 bytes) (available to registered users only)

Series: itaec:2004 (browse)
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Issa, Mohamed; Rankin, Jeff; Christian, John; and Pemberton, Evan

Using Interactive Workspaces for Team Design Project Meetings

Abstract: An Interactive Collaboration Laboratory (ICL) has been established at the University of New Brunswick (UNB) to research the application of interactive information and communication environments for the architectural, engineering, and construction (AEC) industry. This paper provides a quick overview of the laboratory within the wider context of interactive collaborative workspaces. It identifies opportunities to enhance information communication, and group decision-making offered by the laboratory, and focuses on lessons learned to date from its use. The paper reports on a survey conducted among final year undergraduate students who used the environment over the course of three months for their senior design project meetings. A questionnaire was distributed to those students to investigate the impact of the environment upon the effectiveness of their meetings and decisions, the issues and processes where the environment was more (or less) useful, and the context within which the environment and tools were used. The questionnaire also investigated the impact of the environment and its tools upon their project, the quality of their work, and their overall satisfaction. Students found the laboratory to be specifically useful at the preliminary design stage when designing, viewing, and analyzing the site and building layouts of their projects, and determining the project’s sustainability requirements, and targets. The laboratory enabled student groups to view information from different perspectives, access remote information, and save captured information instantaneously. It also enabled them to collaborate more effectively, make more educated decisions, make better use of their time, produce higher quality work, and develop among them a relationship of trust, respect and mutual understanding. Investigating how best to use the lab’s technology to serve their needs, occasionally slowed down their progress and distracted them at times from focusing on their work.

Keywords: Interactive Workspaces, Collaborative Environments, Information and Communication

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Full text: content.pdf (184,091 bytes) (available to registered users only)

Series: convr:2007 (browse)
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Liang Y L, Amette L S, Simon S K

Multimedia project control and documentation system

Abstract: Construction experience and knowledge are omnipresent yet difficult to capture at the project site. Many problems and innovative solutions can not be effectively documented because ofthe lack of proper tools to collect and organize the as-built iformation. In claims or disputes, mmy issues involving site conditions cannot be thoroughly analyzed because ofthe lack of information. This as-built information may exist in diverse formats such as text (reports, daily logs), sound (meeting recordings, discussions), and video (site walk through, inspection records). Using multimedia technology, these diverse formats of as-built information can be integrated with project scheduling and control systems to provide an environment not only to control and document project information but also to elicit and study construction experience and knowledge. Such information could also be very valuable for facility operator/maintainers in the later stage of the facility life cycle. This paper presents the design and the operatian of a multimedia project control and documentation system (M73LTROL) under development at the University of Illinois and Construction Engineering and Research Laboratory (CERL). This system allows the users to document and retrieve the as-built project information in the form of text, sound, image and video associated with construction activities. The current version of MULTROL is developed for the FC platform and runs under 'Microsoft WindowsTM operating environment. This system uses graphical user-interface for all operations, creating a user- friendly environment far construction personnel. The retrieval of the as-built information is further assisted by user definable queries to support different needs of construction management.

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Full text: content.pdf (1,897,657 bytes) (available to registered users only)

Series: w78:1993 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.man-software (0.041560) class.retrieve (0.016578) class.environment (0.015832)
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Permission to reproduce these papers has been graciously provided by the National University of Singapore. The assistance of the editors, particularly Prof. Martin Betts, is gratefully appreciated.


Muramoto, Katsuhiko; Jemtrud, Michael; Kumar, Sonali; Balakrishnan, Bimal; and Wiley, Danielle

Emerging Techologies in a Tele-Collaborative Design Studio between Pennsylvania State University And Carleton University

Abstract: The research project investigates the use of a network-enabled platform (NEP) involving a combination of technologies that include: high bandwidth network infrastructure; high-performance visualization and computer cluster solutions; standard and high definition tele-presence/communication infrastructure; co-located immersive environments; and a range of modeling and imaging applications. The NEP enabled student teams in multiple locations to collaborate via on-demand, synchronous access to project data, visualization, modeling, simulation and multimodal interpersonal communication tools through a web service based dashboard interface that hid the logistic and technical complexities to the user. As a preliminary report on a proof-of-concept design studio conducted during the spring semester of 2007 between the Carleton Immersive Media Studio (CIMS) at Carleton University in Ottawa and the Immersive Environment Laboratory (IEL) at Pennsylvania State University, the paper first describes the implementation of this networkcentric collaborative design platform. The report articulates the “staging” of the conditions of possibility for a dynamic interplay between technological mediation and the reality of making, then compares the use of high bandwidth technology with customized symmetrical toolsets in the tele-collaborative educational environment, versus commercial toolsets deployed over moderate bandwidth connections. In each setting, the collaborative environment is assessed according to issues encountered by students and design outcomes. The effectiveness of the digitally mediated collaborative studio is also gauged in terms of student reaction to the learning process via feedback surveys and questionnaires.

Keywords: design, collaboration, tele-presence, visualization, broadband

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Full text: content.pdf (197,864 bytes) (available to registered users only)

Series: convr:2007 (browse)
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Panu Vahala

A prototype user interface for a building product model in renovation design

Abstract: Despite the fact that several sophisticated building product data model proposals and working prototype applications have been developed, actual practical use of product model applications does not, however, seem a viable prospect for the near future. In our view, the key problem impeding a more widespread use of product model applications is that the user has been neglected. The laboratory of Construction Economics and Management at the Helsinki University of Technology has developed a prototype application for renovation architectural design. The approach taken to this work was to design intelligent user interfaces, the use of which resembles as closely as possible traditional and manual document-oriented design methods. The application consists of four elements: the user interface, a building product model database, library database and tools for producing output documents. The application is developed on an AutoCAD system integrated with a relational database management system, Paradox for Windows. The user interfaces were designed using AutoLisp, DCL and ObjectPAL. The extensive use of actual case studies in the development of this prototype application has provided valuable input in that it has allowed continuous testing of the system and further refinements based on real-life experience.

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Full text: content.pdf (650,761 bytes) (available to registered users only)

Series: w78:1994 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.man-software (0.080015) class.software development (0.019652) class.represent (0.016717)
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Permission to reproduce these papers has been graciously provided by VTT, Espoo, Finland.


Peter Podbreznik, Danijel Rebolj

Real-time activity tracking system – the development process

Abstract: The paper describes the development process of the 4D-ACT (Automated construction tracking) system. The paper also discusses new potentials of the system regarding real-time information flow in a construction process. The 4D-ACT automatically recognizes the building elements from the building site and searches for matches between planed and performed activities. Building elements are recognized automatically from images, created with cameras installed on the building site. The 4D model is needed as the knowledge base of relations between the designed geome-try elements and activities in the process model, which ensures identification of activities on the basis of the recognized building elements. During the recognition process, the algorithm uses the 4D model for additional information, to be more successful. The concepts of the system and the algorithm have been tested in laboratory experiments and are pre-sented in the paper.

Keywords: 4D model, computer vision, pattern recognition, 3D reconstruction, activity tracking

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Full text: content.pdf (357,042 bytes) (available to registered users only)

Series: w78:2007 (browse)
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Quadrel R, Brambley M R, Stratton R

An automated tool for evaluating compliance and providing assistance with building energy standards during design,

Abstract: In an effort to encourage the maximum cost-effective level of energy efficiency in new building design, energy-efficiency standards have become more location-specific and performance-based. As a result, standards often provide more than one path for ensuring and demonstrating that a design complies, but at the cost of increased complexity. Inaddition, the burden of remedying a noncompliant design rests on the designers' knowledge and experience, with only general guidance provided by the standards. As part of efforts in the U.S. Department of Energy's (DOE's) Advanced Energy Design and Operation Technologies (AEDOT)project, a team at DOE's Pacific Northwest Laboratory is developing acomputer program known as the Energy Standards Intelligent Design Tool (ES-IDT). The ES-IDT is one component of a prototype computer-based building design environment. It performs automatic compliance checkingfor parts of ASHRAE/IES Standard 90.1-1989 and provides designers assistance in bringing noncomplying designs into compliance. This paper describes the ES-IDT, the functions it provides, and how it is integrated into the design process via the AEDOT prototype building design environment.

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Full text: content.pdf (1,286,873 bytes) (available to registered users only)

Series: w78:1992 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.environment (0.026117) class.economic (0.022725) class.software development (0.012229)
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Permission to reproduce these papers has been graciously provided by Research Press of the National Research Council of Canada. The support of the editor, Dr. Dana Vanier, is gratefully appreciated.


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