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Y Deshpande, H Leslie

ONTOLOGY-BASED SOFTWARE ENGINEERING AND DISTRIBUTED INFORMATION MANAGEMENT IN THE AEC-FM INDUSTRY

Abstract: Decision-making in the Architecture, Engineering and Construction and Facility Management (AEC-FM) industry is highly distributed across individuals, organizations, national economies, and over a full facility lifecycle measured in decades. Information management in this environment presents problems to all concerned - the practitioners themselves, manufacturers and suppliers, regulators and even clients and users. For the AEC-FM industry, given its size, information management needs to be tackled through an orchestrated set of modest initiatives leading to a distributed set of interactive components– each able to function independently while serving the larger needs of the industry. A companion paper identifies and deals with three major levels at which the problems have to be solved. The top level is ontological and looks at how the industry might develop and maintain an agreed way of identifying and describing the entities about which data are accessed, processed and exchanged by its decision-makers. The second level is concerned with how this controlled vocabulary can be used to identify and make application specific resources (information, products, materials, and ICT tools) available to the project decision maker. The third level is concerned with making the resources from the other two levels available to support distributed decision-making. Ontology-based Software Engineering is a recent phenomenon wherein the development approach varies from creating more general tools to domain specific solution strategies. This paper reports on a prototype software package applicable at the top, industry-wide level, which demonstrates the feasibility and the desirability of ontological solutions specifically for the AEC-FM sector. The outcome could become part of infrastructure for sector-wide application development.

Keywords: Performance-based project data, Product/Process data management, Ontologies, Ontology-based Software Engineering, ICT, BIM

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Full text: content.pdf (189,151 bytes) (available to registered users only)

Series: w78:2011 (browse)
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Yaman H, Tas E, Tancan L

The content of an ideal web site for building materials nformation on the world wide web: a turkish perspective

Abstract: In this paper, authors tried to determine the content that should be taken into consideration in the planning phase of a web site, which would be used as an online information source in the field of building materials. The content of similar web sites is examined on the World Wide Web and findings evaluated in the Turkish perspective according to the characteristics of Turkish construction industry. The content of an ideal web site for building materials information in Turkish construction industry is defined and differences from that in other countries are discussed.

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Full text: content.pdf (243,106 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.collaboration (0.048366) class.communication (0.014798) class.strategies (0.004917)
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Permission to reproduce these documents have been graciously provided by Icelandic Building Research Institute. The assistance of the editor, Mr. Gudni Gudnason, is gratefully appreciated


Yang J, Edwards D, Nicholas J

A fuzzy logic decision support system for routing materials on construction sites

Abstract: The ability to accurately plan and visualise routes for materials movement on complex construction sites is a major determinate of project success (or conversely failure). However, materials routing design complexity and the bespoke nature of individual projects places a unique burden upon project planners and site managers. This paper presents a software tool, called Virtual Construction Material Router (VCMR) that can generate materials routing scenarios sequences based on: i) site layout; ii) delivery routes; iii) construction activity schedules; and iv) temporary accommodation location. The heart of the VCMR is a Geographic Information System (GIS), fuzzy logic based decision-support system, which enables planners to determine the most appropriate route for material deployment. The system also has the inherent ability to enable planners to select and visualise the most suitable material movement routes. Validity of the developed VCMR system was achieved by observing model accuracy when employed on two complex construction sites.

Keywords: materials route, decision support systems, visualisation, fuzzy logic, GIS

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Full text: content.pdf (1,238,456 bytes) (available to registered users only)

Series: itaec:2003 (browse)
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Yazdani S, Schreyer H L

Nonlinear response of plain concrete shear walls with damage

Abstract: During earthquakes, the natural frequencies of concrete structures are often significantly lower than those predicted by conventional linear elasticity. This can cause severe motion of piping systems because the design of support structures utilizes values of predicted natural frequencies. In an experimental program to investigate the problem, a further decrease in stiffness was noted for model concrete structures. In this study continuum damage mechanics is proposed as a constitutive model for describing both the changes in natural frequencies, and the reduction in initial stiffness of small concrete structures. Structural members made with brittle materials such as concrete experience damage under seismic excitation, which is reflected through altered natural frequencies for the structure. With regard to scale models, it is suggested that micro cracking as a result of shrinkage may be the source of the loss in initial stiffness. Shrinkage cracks are easily reflected in the constitutive equation as initial isotropic damage. Finite element predictions based on anisotropic damage mechanics indicate that the proposed approach may be practicable for routine engineering analyses.

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Full text: content.pdf (339,877 bytes) (available to registered users only)

Series: itaec:2003 (browse)
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Yong Cho, George Morcous, Koudous Kabassi, Jill Neal

BIM-Driven Economic Analysis for Zero Net Energy Test Home

Abstract: This paper presents a case study that utilized a Building Information Model (BIM) for 5D cost estimation and theoretical energy analysis to support economic study of a research test bed called the Zero Net Energy Test House (ZNETH). The ZNETH project is being designed and built with the goal of consuming a negligible amount of energy by offsetting usage through energy conservation and residential energy generation. To offset the consumed energy of the household occupants, a wind turbine and solar panels were selected as the energy production resources for this project along with several sustainable materials and systems such as Insulated Concrete Foundation (ICF), Exterior Insulation Finishing System (EIFS), and a closed loop geothermal system. By integrating the highly graphical and intuitive analysis with a BIM of the house, this investigation introduces strategies to include such renewable energy options and sustainable building materials for the ZNETH to predict its economic benefits. The theoretically consumed and generated energy levels were analyzed. It was found that the current design of ZNETH does not have greater economic benefit than cost. In addition, this research conducted sensitive analyses for better design and construction material selection with various sustainable design alternatives. Finally, theoretical suggestions are presented to assist ZNETH in meeting its net zero energy goal and economic returns. Findings from this research will be used for designing ZNETH II which is currently under investigation.

Keywords: BIM, 5D cost estimation, zero net energy test house, energy analysis, economic analysis

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Full text: content.pdf (165,906 bytes) (available to registered users only)

Series: w78:2010 (browse)
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