| Summary: | 博士 === 國立成功大學 === 建築學系碩博士班 === 94 === From the year 1997, the work for the assessment methods of building environmental performance was prepared by Technical Committee ISO T59/ SC17 of ISO (the International Organization for Standardization) on the building construction field. It's definite that the international standard of building environmental performance is a current trend in the overall sustainable buildings. Besides, it provides a reference as a common basis between stakeholders; building owners, design teams, contractors and suppliers et cetera. Therefore, this study will utilize the AHP (Analytic Hierarchy Process) method to investigate the international demonstration sustainable building assessment tool, by compiling and completing an experts’ questionnaire of professionals, the Government, and professors, et cetera, in Taiwan, and explore the differences between ‘different professionals’ and ‘regional characteristics.’ Besides, through a test of case-study projects, this research hopes that results will be advantageously employed in sustainable building assessment studies in the future for Taiwan. Our major findings were as below:
1. Comparing the context, content, scope and showcase at the conferences between the assessment tools, GBTool2005 highlighted the ability of local users, the adaptability to suit regional issues and widespread use in the World Sustainable Building Conference. Thus, GBTool2005 was as a reference and basis for developing a domestic assessment framework. GBTool2005 consists of three levels of factors: the high-level ‘Issues’, the second-level ‘Categories’ and the third-level ‘Criteria.’ At the top level, there are 7 general performance issues. The second-level includes 28 categories, and the third-level covers 119 criteria.
2. From a pretest result, it shows that the issues of ‘A. Site Selection, Project Planning and Development,’ ‘E. Functionality and Controllability of Building Systems,’ ‘F. Long-Term Performance’ and ‘G. Social and Economic aspects’ can be “available” to assess. On the other hand, ‘B. Energy and Resource Consumption,’ ‘C. Environmental Loading,’ ‘D. Indoor Environmental Quality,’ and ‘G. Social and Economics’ have some “unavailable criteria” to assess. Therefore, this study carried out the 107 “available criteria” applied in case-study projects, and set the weighting value of the 12 “unavailable criteria” at 0, or set the ‘Acceptable performance’ of the Benchmark if the qualitative ‘criteria’.
3. The AHP result of experts’ opinions outlines the priority issues in Taiwan. There are: ‘C. Environmental Loadings,’ of which the weighting value is 21.1%, ‘B. Energy and Resource Consumption,’ of which the weighting value is 18.6%, and ‘D Indoor Environmental Quality,’ of which the weighting value is 16.2%.
4. Differentiating between the weighting value of Taiwan experts and Default weights (international experts) by the T-test, it shows that ‘regional characteristics’ is the critical factor to influence the weighting value of GBTool2005. Accordingly, this study was classified into three weighting value sets of ‘Issues’ by the North, the South and the whole Taiwan area. The second-level ‘Categories’ will be grouped into a weighting value set of the whole Taiwan area, by reason of no difference between ‘professionals’ and ‘regional characteristics’ in Taiwan area.
5. Based on the assessment framework of GBTool2005, the presented results can provide a regional customization of GBTool2005 in Taiwan, and furthermore be applied to evaluate the performance of buildings. The high-level ‘Issues’: ‘A. Site Selection, Project Planning and Development,’ ‘C. Environmental Loading’ and ‘D. Indoor Environmental Quality’ continue using the weighting value of GBTool2005; the weighting value of ‘B. Energy and Resource Consumption,’ ‘E. Functionality and Controllability of Building Systems,’ ‘F. Long-Term Performance’, and ‘G. Social and Economic aspects’ was adjusted to the experts’ questionnaire. These were classified into three weighting value sets of the North, the South and the whole Taiwan area by the demarcation of ‘the Tropic of Cancer.’ The second-level ‘Categories’ of ‘B. Energy and Resource Consumption,’ ‘C. Environmental Loading’ and ‘D. Indoor Environmental Quality’ select the average result of all experts’ questionnaire; others use the ‘Categories’ default value of GBTool2005.
6. Compared the assessed result of GBTool2005 with the classified result of the “Green Building Label” by the case study, the weighting value of the high-level ‘Issues’ of GBTool2005 could consists of ‘A. Site Selection, Project Planning and Development,’ ‘C. Environmental Loading’ and ‘D. Indoor Environmental Quality’ that used in Taiwan. Furthermore, using the adjusted weighting value that the assessed result of GBTool2005 to be close to the classified result of the “Green Building Label”.
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