GB 50189-2015 第3.2.3条
| **** | **Roof transparent area**: The transparent area of the roof shall not exceed 20% of the total roof area. |
| **** | **Roof transparent area**: The transparent area of the roof shall not exceed 20% of the total roof area. |
12 hotel MEP experts online, answers cite standard clauses you can verify.
Ask free →Engineering reference only — verify against project conditions and the latest codes.