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建筑防火如何分類?
更新時間:2018-09-02 14:02:27 字號:T|T
按照我國國家標準《建筑設計防火規范》,建筑物的耐火等級分為四級。建筑琺的耐火等級是由建筑構件(梁、柱、樓板、墻等)的燃燒性能和耐火
按照我國國家標準《建筑設計防火規范》,建筑物的耐火等級分為四級。建筑琺的耐火等級是由建筑構件(梁、柱、樓板、墻等)的燃燒性能和耐火極限決定的。
一般說來:   
一級耐火等級建筑是鋼筋混凝土結構或磚墻與鋼混凝土結構組成的混合結構;   
二級耐火等級建筑是鋼結構屋架、鋼筋混凝土柱或磚墻組成的混合結構;   
三級耐火等級建筑物是木屋頂和磚墻組成的磚木結構;   
四級耐火等級是木屋頂、難燃燒體墻壁組成的可燃結構。
防火等級主要是說建筑保溫材料,分為A級不燃型,B1級難燃型,B2級可燃型,也稱阻燃型,B3級易燃型。
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