| 요약2 |
KS F 2808, laboratory measurements of airborne sound insulation of building elements, was revised in 2000 and KS F 2862 was newly established in 2002. Thus Related Korean Industrial Standard such as KS F 4034, KS F 4722, KS F 4724, KS F 4734, KS F 4735, KS F 4736, KS F 4738 which are related with prefabricated walls or panels should be revised according to KS F 2808 and KS F 2862. This study aimed to elicit the single number quantity such as Rw, Rw+C, Rw+Ctr, Lm defined in KS F 2862 instead of exiting rating number; transmission loss of 500Hz. As a result, there was a good correlation between single number quantities and transmission loss of 500Hz, thus it could be possible to change the rating index from existing rating number to new single number quantities properly. |