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GB 51251-2017 第9.2.1条 Technical Standard for Smoke Control and Exhaust Systems in Buildings

Construction and Commissioning消防工程

GB 51251-2017 第9.2.1条

| **** | Air ducts (including smoke exhaust ducts and pressurized supply air ducts) shall be made of non-combustible materials, and civil air shafts shall not be used (unless otherwise specified in the code). Air ducts in hotel guest rooms, corridors and other areas must meet this requirement. |

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GB 51251-2017 第2.1.2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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