As the top load-bearing and outer envelope structure of the building, the envelope function and facade modeling function of the building roof is very important for the whole building, and it is the most important part of the leakage of the light steel structure envelope system. Its main functions are:
It can resist the erosion of wind, rain and snow;
Bear the self weight of the roof and the load of wind, snow and people on the roof;
According to the materials used in light steel structure roof, there are many types, such as color profiled steel plate, color steel sandwich plate, color linoleum tile, various light roof panels, GRC Plate, metal arched corrugated roof, composite profiled steel plate, etc;
Light steel structure roof and wall materials mainly choose color profiled board or sandwich board. The commonly used profiled steel plate specifications mainly include: yx25-205-820, yx51-470, yx76-380-7600, yx51-410-8200 and other plate types. Among these plate types, there are not only 360 degree flanging plate, concealed gusset plate lap joint, but also nailing plate. Purlins are thin-walled C-type or Z-type steel purlins with light weight, and the roof slope is generally designed as 1 / 10-1 / 15.