대학기숙사 기계실에서 발생하는 설비소음의 전달 및 감쇠특성에 관한 실험적 연구

According to the improvements of the education and the cultural level, the noise pollutions which have been occupying a major portion of civil petitions about environment is gradually aggravating. Especially, the plumbing noises which took place at machine room of dormitory are the compositive shapes of an air-borne sounds and a solid-borne sounds. So it has been causing to injure the comfortable residential environment of residents that it is propagated in a residential space. Judging from this point of view, this study grasped the propagation and the properties of attenuation about four varieties's plumbing noise which took place at machine room to understand that it cause influences to a residential space. According to the result of this study, there is a need to change the thickness and form of the flat-slab system to exclude the plumbing noise which it took place at machine room. Also, using the sound-absorbing material that the acoustic absorptivity stands high above the others on the ceiling at a machine room and selecting the proper materials in choosing the sound-absorbing of the body of a wall and a floor, it could increase the effect of a noise reduction.