Because we already use bigger specification steel material at the main structure, and the building cost is big, so we recommend client cut some support steel to save cost, but premise condition is building safety guarantee.Vertical support made by heavy angle steel, this type steel can work well when the main structure is heavy, very helpful support. The small support between purlin is installed as well, and all these support use galvanized steel materials, it ensure the support life time is as long as main steel structure frame.Roof purlin: Big section steel is used to fix the roof panel, because the roof panel weight is bigger than common project, so we choose big specification steel as purlin. Wall purlin: Big thickness purlin is installed, because the wall panel is composite sandwich panel, the weight is bigger than standard project, we have to strength the wall purlin to load the heavy wall panel weight. Roof sheet: Roof panel is made by two layer steel sheet and one layer EPS sandwich panel, the total thickness is 75mm, the poultry house temperature is controlled by man demand, not follow up the outside nature temperature, it is very necessary for a two floor poultry house, otherwise the chicken there may got died because the nature temperature is too hot. Wall sheet: the wall panel is same as roof panel, made by steel sheet and sandwich panel, just panel section shape is different, because there is no need big wave at the wall section to drainage the rain water, but roof panel section wave should be big.Cooling pad: The cooling system is necessary in every modern chicken feeding house, the temperature will be too hot because too many chicken stay together at one house, this house installed 5 pcs cooling pad total, 4 pcs installed at house two side, and 1 pcs big cooling pad is installed at end wall, it is very helpful to lower the air temperature flow from outside.5.M24 foundation bolt is provided to molt the steel column with the concrete foundation, and M12 high strength bolt is used to fix the steel frame part.