Select C type steel equipment to consider several points

      C type steel equipment selection, should consider their different characteristics. In light steel industrial plant, when there is a large suspension load or moving load, it can be considered to give up the gantry frame and use the grid frame. In areas with large basic snow pressure, the roof curve should be conducive to snow slide (the tangent line of 50 degrees requires consideration of snow load). For example, the limestone barn shed of Yadong cement factory uses a three-core round mesh shell. Nearly half of the total snow load was released. Areas with high rainfall are considered similarly. When the building permits, it is more economical to place supports in the frame than to simply connect the joints to the frame. In the buildings with large roof span, suspension cable or cable membrane structure system with main component tension can be selected. In the design of high-rise steel structure, steel-concrete composite structure is often used. In the high-rise with high seismic intensity or very irregular, it should not be simply for the sake of economy to choose the unfavorable aseismic core cylinder with outer frame. It is advisable to choose a structural system with large src columns around and a supporting frame at the core. More than half of such high-level in our country is the former. It is not good for earthquake resistance. Sometimes the direction of load transfer can be adjusted to meet different requirements for the arrangement of the floor plane secondary beams of the tile press structure. The layout of the structure should be considered comprehensively according to the characteristics of the system, load distribution and properties. Generally speaking, the stiffness should be uniform. The mechanical model is clear. Limit the influence area of large loads or moving loads as much as possible, so that it is transmitted to the foundation in the most direct line. The distribution of anti-lateral supports between columns should be uniform. Its centroid should be as close as possible to the line of action of the lateral force (wind shock). Otherwise the torsion of the structure should be considered. The resistance side of the structure should have multiple lines of defense. For example, with a braced frame structure, the column should be able to withstand at least 1/4 of the total horizontal force alone.