Farid Fouchal, Vanda Dimitriou, Tarek M Hassan, Steven Firth, Argyris Oraiopoulos, Jonathan Masior and Sven Schimpf
Decision Support Tool for Energy Efficient Building Retrofit Actions
Abstract: This paper shows a process of developing a decision support tool to automatically generate building retrofit alternatives and rank them using energy performance analysis, user requirements, relevant benchmarks and regulations. Refinement of the retrofit scenarios follows a set of steps from creation of a Building Information Model of a base-case representing the status of the building at the time of the analysis, then creation of combinations for the possible retrofit scenarios. TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution) based multi criteria approach is adopted as it relies on identified best alternatives using selected criteria. Ranking of alternatives follows their relative closeness to the identified ideal alternative. Best options are graphically presented.
Keywords: MCDM, Building Retrofit, BIM, Decision Support, Energy Performance
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Kaneta T, Furusaka S
Metagame analysis for determining construction methods
Abstract: This paper deals with the use of metagame analysis to help resolve
conflicting factors affecting the choice of a reinforced concrete structural
system. The most suitable construction method in a project varies in
accordance with several factors, but may be limited to: overall construction
cost, construction duration, quality of construction and effect of
environmental issues. A computer program was developed as a tool to
analyse the decision making process using an Analytical Hierarchy Process
and is used to decipher different preferences based on prioritised objectives.
The specific focus in this paper is resolving to choose pre-cast concrete in
comparison to cast-in-place technology in a project operated by a firm
including an owner, an architect and a construction manager. The results
derived from the metagame analysis shows that the priority afforded to the
various factors affecting a particular choice of building system is dependent
upon the preference given to these factors and this necessarily will have an
effect the manner in which the conflicting objectives are resolved.
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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.
Embedding optimization in the design process of buildings – a hall example
Abstract: Considering the economic effort and the ecologic impacts of the building industry, optimization embedded in the design process of buildings is desirable as a flexible tool. To apply Multidisciplinary Design Optimization (MDO) to building design, adaptations to the special needs of this field are required. In this paper, first, appropriate objectives are discussed, which distribute to three major groups: economic performance, ecologic performance, and preference accordance concerning aesthetics and functionality. Second, the decomposition by components specific for building-design, which link non-numerical qualities with physical, economic, and ecologic quantities, is discussed. The steps are illustrated by means of a demonstrational hall design. Finally, the results of a test run presented for this example reveal the nature of the design space. In conclusion, the specific objectives and components and the system-oriented decompo-sition provide the basis for a CAD-oriented usage of optimization during the design process.
Keywords: multidisciplinary optimization, building-design-specific decomposition, optimization model, computer-aided design
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Yewande Abraham, Zhidan Zhao, Chimay Anumba and Somayeh Asadi
Implementation of a Preference Monitoring Application for office Building Occupants
Abstract: Buildings should provide a level of comfort that is acceptable to majority of the occupants and enhance their health and productivity. When indoor environmental conditions are not as good as expected, occupants sometimes make adjustments. In order to capture and monitor occupant preferences and occupant behavior indoors, a feedback system- Preference Monitoring Application (PMA) was created. With the PMA, energy use behavior and occupant preference data are collected on a continuous basis while energy consumption and indoor environmental parameters are being monitored separately in a building. The PMA was developed by identifying the values that are important to building occupants and following recommendations from other indoor environmental quality surveys. It is a simple application that captures satisfaction with temperature, lighting, indoor air quality and other parameters that influence occupant comfort and behavior on a continuous basis by using human input. A comparison of the feedback from 10 occupants in an office building in Pennsylvania, USA and 14 occupants in an office building in Doha, Qatar over 7 months are presented in this paper. This can enable the use of actual data to develop occupant profiles to improve occupant satisfaction.
Keywords: Occupant Feedback, Occupant Behavior, Satisfaction, Values
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