Abstract
The control grade of heavy floor impact sound for the Housing Performance Indication System can be calculating by combination of slab construction, floor finish, edge confinement type, equivalent thickness, and room area. In this study, we examined how much corresponding between the actual measured value which follows specified notification within heavy floor impact sound control grade and the value notice in the heavy floor impact sound control grade. Also, we proposed the extended specification notification by actual measured value of collective housings which follows current specification.