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GB 51251-2017 第4.6.1条 Technical Standard for Smoke Control and Exhaust Systems in Buildings

Smoke exhaust system design消防工程

GB 51251-2017 第4.6.1条

| **** | In hotel buildings, the design airflow rate of the smoke exhaust system shall not be less than **1.2 times** the calculated airflow rate of the system. |

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