抄録
Presently the room sizes of the houses using the 280mm thick Half Pre-cast Concrete void slab tend to be larger than the illustrated floor space of the Evaluation Standards notified by the Ministry of Land, Infrastructure & Transport. This is the report on field measurement of the heavy floor impact sound insulation and its analysis in such rooms as a result, the heavy floor impact sound level tends to increase the level as the area of the sound receiving room becomes larger in the case of the floor supported by one side or parallel two sides.
