Special provisions for building fire resistance rating requirements for industrial buildings, civil buildings, class A and B plants and firewalls in class A, B and C warehouses, the fire resistance limit shall not be less than 4.00h, and the fire resistance limit of firewalls in class A and B plants and class A, B and C warehouses shall not be less than 4.00h
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The columns of single-layer plants (warehouses) with class I and II fire resistance ratings, The ceiling of medical buildings, teaching buildings in primary and secondary schools, care facilities for the elderly, children’s rooms in nurseries, kindergartens and children’s amusement halls and other children’s activity places with a fire resistance limit of not less than 2.5h and 2.00h respectively shall be made of non combustible materials; When flame retardant materials are used, the fire resistance limit shall not be less than 0.25h
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Incombustible materials shall be used for the ceiling of the lobby and walkway in class II and class III fire resistance buildings
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The fire resistance limit of room partition wall with fire retardant wall in class II fire resistance rating building shall not be less than 0.75h; When the building area of the room is not more than 100m2, the partition wall of the room can be a non combustible wall with a fire resistance limit of not less than 0.5h or a non combustible wall with a fire resistance limit of not less than 0.3H
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The fire resistance limit of roof load-bearing components of single and multi-storey plants (warehouses) with class I fire resistance rating fully protected by automatic sprinkler system shall not be less than 1.00h
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Except for class A and B warehouses and high-rise warehouses, the fire resistance limit of non load-bearing exterior walls of buildings with class I and II fire resistance rating shall not be less than 0.25h when non combustible walls are used
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When non combustible walls are used, It shall not be less than 0.5h
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For the non load-bearing exterior walls of class I and II aboveground plants (warehouses) with fire resistance rating of class D and class E on the 4th floor and below, when the non combustible wall is used, its fire resistance limit is not limited to the room partition in the plant (warehouse) with fire resistance rating of class II
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When the non combustible wall is used, it shall not be less than 0.25h
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It is specially specified that the fire resistance rating of industrial buildings and civil buildings is class II multi-storey plant The fire resistance limit of prestressed reinforced concrete floor slab used in multi-storey warehouse and multi-storey residence with class II fire resistance rating shall not be less than 0.75h
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The fire resistance limit of roof slab of buildings with class I and class II fire resistance rating shall not be less than 1.5h and 1.0h respectively
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When it is necessary to use metal sandwich plate, The core material shall be non combustible material, and the fire resistance limit shall comply with the specifications.
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