A Strategic Assessment Model of Retrofitting for Buildings – A Triple-bottom Line Approach
Posted: 13 Aug 2019
Date Written: August 12, 2019
With the current emphasis on sustainable building development, many sustainable building assessment models and tools are emerging. They have different focuses, but most of them focus on assessing the environmental and economic performance of buildings with the absence of social aspect due to its “soft” characteristics and complex content. However, the social aspect is an indispensable dimension of sustainability. In fact, the three aspects – environmental, economic and social – are interdependent. Understanding how the interdependency plays when assessing the building performance can help to draw a holistic picture of sustainability. Moreover, new buildings have attracted more attention comparing with existing buildings, leading to the huge gap in the performance between new buildings and existing buildings.
This paper aims to develop a three-dimensional assessment model that can combine environmental, economic and social aspects to holistically evaluate the sustainable performance of exiting buildings. In the meanwhile, the developed model is also able to generate suitable retrofitting strategies based on the assessment outcome using the triple-bottom line approach. This model can contribute to diagnosing the problems of existing buildings and improving their performance. It provides an improved approach and perspective to the study of sustainable building assessment.
This research utilised both qualitative and quantitative methods: a questionnaire survey to gather the information from stakeholders, including building owners, tenants, project managers, facilities managers, architects and engineers, to confirm the assessment indicators. Based on the survey results, an assessment model has been established. In the end, multiple case studies have been adopted to verify the model.
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