GB 50209 第1.0.1条
This code is formulated to standardize the acceptance of construction quality of building floor engineering and to ensure the quality of floor engineering.
This code is formulated to standardize the acceptance of construction quality of building floor engineering and to ensure the quality of floor engineering.
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.