GB 50222-2017 第4.0.7条
| | When song-and-dance entertainment, screening and amusement venues (such as KTVs, dance halls, etc. attached to hotels) are located on the fourth floor or above of buildings with Grade I or II fire resistance, the ceiling materials for interior decoration shall be Grade A decoration materials, and other parts shall use decoration materials not lower than Grade B1; when located on the first basement floor, the ceiling and wall materials for interior decoration shall be Grade A decoration materials, and other parts shall use decoration materials not lower than Grade B1. |