GB 50015-2019 第3.5.8条
| **** | When pipes (including water supply, drainage, and hot water) pass through areas with strict noise requirements such as hotel guest rooms and meeting rooms, noise reduction measures shall be adopted. Drainage risers should use spiral silencer pipes or flexible-joint cast iron pipes, and a sound insulation layer (such as rubber-plastic insulation material, with a thickness of not less than 10mm) shall be provided on the outer wall of the pipes. |