A Numerical Study on the Attenuation of Fire Alarm Sound
화재경보음 감쇠에 관한 수치적 연구

HyeongKi Roh, Jungsoon Im
2012 Korean Society of Hazard Mitigation  
This study theoretically examined domestic and overseas sound standard of fire alarm and the sounder was installed in accordance with the criteria specified in the 'fire safety code', and the adequacy of sound level with which fire alarm sound can be conveyed to residents were verified by numerical analysis of the sound level of the farthest location from the sounder. The sound level of fire alarm analyzed with the criteria specified in the fire safety standard about the place which is located
more » ... t the farthest distance from sounder was appeared to be 36 dBA, 59 dBA and didn't satisfied from 65 dBA specified in the UK standard in evaluation model. The sound of fire alarm could accurately be conveyed when a separate sounder was installed at a room which was partitioned in order to convey the sound of fire alarm to the resident of building. In performance-based fire protection design, if sound attenuation was calculated for application, it was analyzed that damage of human life could be reduced with rapid evacuation through accurate reception of the fire alarm sound on the part of resident on the fire. Based on the result of this study, wider range of studies for the sound attenuation of fire alarm sounder would be required, and legislation regarding the spacing of the fire alarm sounder need to be revised and supplemented.
doi:10.9798/kosham.2012.12.4.149 fatcat:5hekdalp6jcxfewatmiq7f2uma