A FRAMEWORK FOR SUSTAINABLE RESILIENT HOUSES ON THE COASTAL AREAS OF KHANH HOA, VIETNAM

Vietnam is a developing country and a storm-prone country in Asia. The impacts of tropical storms on Vietnam‟s residences are the main focus of study in this research. The lack of knowledge and storm-proofing techniques for improving resilient houses are unresolved issues in this place. The consequences of this limitation were demonstrated through 55% of collapsed houses and 10% of flooded areas in Nha Trang city after the storm 2017. This research was based on the community's needs to develop a set of guidance for improving stability of domestic buildings in storm-prone areas. The aim of the research is to produce a framework for designing sustainable resilient houses in Vietnam‟s coastal areas. That framework will solve a part of building problems from hurricane impacts with the resilient designs in terms of floodproofing and wind mitigation. This research also promotes the application and development of sustainable dwellings in Vietnam. Sustainable development in residences will increase building performance in two areas: energy and resource efficiency. The quantitative and qualitative data in the study were collected by the use of mixed-method approaches. Those approaches included observation, questionnaire, interview, and simulation. The observation gathered evidence of storm impacts on Nha Trang city in recent years. The community's needs were obtained with 50 responses to the questionnaire. To understand the depth of local problems, interviews with 5 local professionals and 3 householders were conducted. The main findings involved the solutions, techniques, benefits, and challenges of sustainable resilience in coastal residences. Besides, the weaknesses of existing buildings were defined through the wind simulation of Design-Builder and Autodesk CFD. The framework has three main stages for designing sustainable resilient houses in Vietnam's coastal areas. Those stages are data collection, design specifications, and product design. In particular, the framework was validated by a prototype design. The simulation results were evidence to define building performance in terms of storm resilience and sustainability. Hence, the framework and the prototype confirmed the effects of the research on society and people's awareness.