A light steel building system overview
Light steel building system due to its construction cycle is short , high degree of prefabrication , construction and design throughout the construction process flexible and environmentally friendly features , is widely used in various types of buildings. Annual growth rate of 8% , the construction area of 2001 reached about 20 million square meters in 2006, estimated at 150 million square meters , the building structure has been gradually deepened into large factories , warehouses , supermarkets, office buildings and hotels and stadiums and other fields , and the regional development of light steel building by point, line -to-face ; by the economically developed coastal areas , central to the west ; from the big cities , medium-sized cities to towns full bloom , very rapid development momentum . Meanwhile, compared with developed countries , Europe and Japan accounted for 40 % of the total steel buildings housing construction ( area ) , while China accounted for only 0.5% ( area ) , we can see that China construction steel is still in its infancy, especially in the residential low-rise light steel building is still in its infancy today, very broad space for development .
Second, the steel skeleton maintenance of the structure may leak , where seepage
Steel is generally used as an internal skeleton, its out there to maintain the structure , light steel plates for light general maintenance material ; single plate , double plate , composite panels. Whether the roof, walls , there may be leaks, seepage place the following places:
A seam between the board and the board ( walls and roof ) , due to the poor quality of the plate , or the construction of the board and between the board did not bite ; plenty plate curling unreasonable ; some have clay , but may no glue dense, there is a gap ; by a lighting board and board- lap place ;
2, the roof on the roof , roof slope small , local storm big enough to do the roof cover wide flap installation is not good, and some do not even have to install waterproof plug ; extends into the roof of the board does not roll up upwards ; cover lap joint between the plates did not lay rubber , which are likely to cause roof leaks, seepage ;
3 , the roof gutters do not deep enough , wide enough , weather the storm hit , the drainage rate , the amount is too small, the water will overflow counter to the building interior ; some gutter drains clogged and can not even spilled water ;
4 , there are other roofing structures , such as ventilators, ventilation air floor , with lighting , parapet , gong nails, etc. and roof support between their own and the contact area and the roof if they do not waterproof , but also will cause water leakage , seepage ;
5 , although light steel roofing nails now play much, but if you hit the nail right position appears , when the new play , no nail holes to plug the original , it will leak .
Third, the light steel pressed metal color plates widespread leaking roof
After market research, most of our current color plate steel roof leaking more serious, in the southern area of the phenomenon is more prominent , and even some steel manufacturers own factories, offices and leaking phenomenon is also common, mainly in the pressure- leaking board lap, with roof lighting , gutters, steel and cement walls and other parts of the connection .
