Waterproof grade
The waterproof grade of the roof of the reserve warehouse should be Grade II, and the waterproof grade of the roof of the bungalow warehouse with other functions should not be lower than Grade III.
New waterproof coiled material
New waterproof materials such as synthetic polymer and polymer modified asphalt should be used as roofing waterproof materials.
Slope requirement
The slope of coiled material waterproof roof should not be greater than 25%. When the slope can't meet the requirements, measures should be taken to prevent the material from slipping.
Drainage form
The roof should adopt unorganized drainage, the cornice should not be less than 600 mm, and the southern region can adopt organized drainage. In the form of hanging mountain, it should not be less than 500mm. The profiled metal color plate roof should be in the form of hanging mountain.
Thermal insulation measures
The upper and lower chord surfaces of the arched roof should be insulated or insulated. Thermal insulation measures should be taken at the arch foot. Reliable measures should be taken to remove the hot air in the vault.
Color board connection
The color plate of profiled metal color plate roof should be connected with the long side of the color plate in a bite way, and fixed with purlin through matching connectors. The upper color plate shall not be fixed with open screws and purlins. Except for the roof position, the short sides of the color plates should not overlap.