GB 50015-2019 第4.8.1条
| **** | The effective volume of the drainage sump in the hotel basement (e.g., equipment floor, underground garage) should not be less than the discharge of the largest drainage pump for 5 min, and should not be less than 0.5 m³. The bottom of the sump should have a slope of not less than 0.05 toward the suction pit. |