B2 insulation materials should be set fire belt on each floor
Secco products instrument website reported: on September 25th, reporter learned from the provincial department of live built that province before living building department issued a "about to civil building exterior insulation materials of fire supervision and management of the relevant matters notice, to ensure fire safety of construction projects, effectively prevent and reduce fire accident building external wall thermal insulation material.
Notice requires that the curtain wall type building height is greater than or equal to 50 meters in our province, the combustion performance of insulation materials shall be the A level; Building height is greater than or equal to 24 m, less than 50 m, the combustion performance of insulation materials should not be lower than B1 level. When B1 level material is used, should be set fire belt in each layer. At the same time, should use noncombustible material protective layer, building the first protective layer thickness should not less than 10 mm, other floor should not be less than 5 mm. Building height less than 24 meters, the combustion performance of insulation materials should not be lower than B1 level. When B1 level material is used, should be every two layer set fire belt; When using B2 materials should be set fire belt on each floor.
