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GB 51251-2017 第3.2.2条 Technical Standard for Smoke Control and Exhaust Systems in Buildings

Smoke control system design消防工程

GB 51251-2017 第3.2.2条

| **** | When a vestibule (the vestibule on a hotel guest room floor) adopts natural ventilation, the area of openable exterior windows or openings in an independent vestibule or a fire elevator vestibule shall not be less than **2.0㎡**, and in a shared vestibule or a combined vestibule shall not be less than **3.0㎡**. |

Other clauses of this standard

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GB 51251-2017 第2.1.1条Technical Standard for Smoke Control and Exhaust Systems in…
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GB 51251-2017 第2.1.4条Technical Standard for Smoke Control and Exhaust Systems in…
GB 51251-2017 第2.1.5条Technical Standard for Smoke Control and Exhaust Systems in…
GB 51251-2017 第2.1.6条Technical Standard for Smoke Control and Exhaust Systems in…
GB 51251-2017 第2.1.7条Technical Standard for Smoke Control and Exhaust Systems in…
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