Abstract
1. Origin of the study Due to the improvement of living standard and the convenience of transportation in Taiwan, petition cases on noise problems due to the urbanization phenomena like intense population and traffic jam are increasing year by year, where, most of the cases relate to life noise and floor impact sound in residential complexes, which impact the normal work and rest of the people, therefore, the demand for improved residential sound environment quality and healthful living conditions become more and more eager. According to the results of the research of the Architecture and Building Research Institute, Ministry of the Interior, on acoustic standards and regulations of buildings as well as relevant amendments, in existing building technique specifications of Taiwan, sound insulation adopts the standards of partition materials and thickness, which cannot be sued to evaluate whether the proper sound insulation effect is achieved. According to the demand for the amendment of domestic building sound insulation regulations, the Architecture and Building Research Institute, Ministry of the Interior and the Bureau of Standards Metrology and Inspection, Ministry of Economic Affairs have jointly completed and promulgate successively relevant CNS Acoustic standards of building as basis for future amendment of building sound insulation regulations. This stage of study has carried out field survey on the sound environment of various residential buildings in Taiwan and proposed suggestions for the improvement of residential sound environment. 2. Methods and procedure of the study This study mainly probes into the current situation and diagnosis of residential sound environment, documentary analysis, questionnaire survey research, measurement and quantitative analysis method, statistical analysis and expert consulting method are adopted for the survey and analysis on the residential sound environment. In this study, representative residential building cases have been selected for field survey according to the urban development conditions in different areas of Taiwan as well as locations, external environmental conditions, types of sound sources and building types, etc. and the goal is to propose suggestions for improvement according to the results of the field measurement on residential sound environment according to the standard procedure of field measurement. 3. Important findings The field measurement on the acoustic performance of the residential sound environment have been completed in this study according to the Standard Operation Procedures (S.O.P)for field survey and measurement of residential sound environment, and the following important findings are obtained: (1) The S.O.P for field measurement on the acoustic performance of the residential sound environment have been established in this study, and the field measurement on the acoustic performance of the residential sound environment have been completed in this study according to the S.O.P . (2) According to the results of the analysis on the questionnaires on residential sound environment, most residents are troubled by external construction noises and industry noises, while floor impact sound is the main internal noise source of residential complexes. Therefore, the countermeasures of external environment noise and floor impact sound are the priorities of residential sound environment. (3) According to the results of the field measurement of this study, the sound insulation performances of the facades were poor and the floor impact sound performance of residential floors with tile covering were also poor. This study provided propose suggestions that were about insulation performance of windows and floors, to provide insulation sound design or improve sound environment. 4. Suggestions For immediate strategies: The project established the dwelling quality of dwelling houses, it is recommended that the investigation and diagnosis mechanism on sound environment of dwelling houses will be the ongoing research. Sponsor: Architecture and Building Research Institute, Ministry of the Interior Organizer: Construction and Planning Agency, Ministry of the Interior Explanation: The field measurement methods have been established and measurement on actual cases have been carried out in this stage of study, it is suggested to apply existing measurement standards to other cases in follow-up researches to accumulate more complete data for the acoustic performance of buildings. For long-term strategies: To promote high performance Green materials used rate, the project recommend that sould be calculate on the area of sound insulation of windows and doors in Design and Technique Specifications for Green Building Materials. Sponsor: Construction and Planning Agency, Ministry of the Interior Organizer: Architecture and Building Research Institute, Ministry of the Interior Explanation: As stipulated in the Design and Technique Specifications for Green Building Materials for interior decoration materials, sound insulation windows and doors out of green building materials with high sound insulation performance have not yet listed in the scope of Interior Finish Materials at present, it is suggested to further discuss on the feasibility of amendment.