A Fuzzy-QFD Approach to the Assessment of Green Construction Alternatives Based on Value Engineering

With the progress of science and technology, the concept of sustainable development is increasingly prevalent in the contemporary world. Under this circumstance, the green buildings, which play a crucial role in achieving the goal of sustainability, have become more in demand in the construction industry. Although the duration of the construction process is comparatively short in the life cycle of a project, the impact of the process on the surroundings is profound and lasting. In addition, a mass of resources and energy is consumed during the construction phase. Therefore, green construction programs should be applied and evaluated in order to reduce the environmental problems and resources consumption to achieve the goal of green building. Firstly, this study proposes an approach combining fuzzy set theory and quality function deployment (QFD) method to establish an evaluation model of the green construction program. Then value engineering method is introduced to solve the problem of the green construction alternatives optimization by the function-cost analysis. Finally, a case study is given to illustrate the evaluation process of the proposed methods.