The purpose of this study is to present a plan for reducing noise between floors of apartment houses in Korea and to examine the method for evaluating noise blocking performance rating between floors. The definition of floor noise and classification method of floor noise can be described, and floor noise can be distinguished into lightweight impact sound and heavy impact sound. The wall-type structure, which is mainly adopted in domestic apartments, relatively transmits vibration caused by impact sources rather than using columns and beams, so noise problems between floors are relatively higher than systems using columns and beams. Three representative methods for reducing and blocking floor noise are described, and criteria for evaluating the effectiveness of floor noise reduction by each method are described. In addition, the method for noise reduction and blocking grades for each construction method currently applied in Korea was described, and as a result, it was judged that the domestic rating evaluation method was not suitable for the current domestic situation, and a new evaluation method and standard were needed.

1. 서론
    1.1 연구배경 및 목적
    1.2 연구범위 및 방법
    1.3 선행연구사례
2. 층간소음 현황
    2.1 층간소음 정의
    2.2 층간소음 발생 원인
    2.3 층간소음 발생 현황
3. 층간소음 방지대책
    3.1 고강성 바닥공법
    3.2 뜬바닥공법
    3.3 통기성 천장 공법
4. 차단 성능 검증 방법
    4.1 층간소음 측정법
    4.2 층간소음 차단 성능 및 감쇠량 측정법
    4.3 층간소음 차단 성능 등급 평가
5. 결론
References

• 정경태(경상국립대학교 공과대학 건축학과 부교수, RIBA/ARB) | Jung Kyung-Tae (School of Architecture, Gyeongsang National University)