Step 1: embedded parts
For cast-in-situ concrete bearing platform with embedded column base bolts, the position of embedded column base bolts for independent foundation shall be accurately arranged to ensure its structural strength and verticality, and the exposed length of bolts shall meet the requirements of double nuts and adjusting height. The foundation shear key should pay attention to the grouting hole and ensure the grouting strength.
Step 2: design and construction
Light steel structure engineering design and construction light steel structure workshop geometric size must be processed according to the design requirements, to prevent the geometric size error is too large and form the change of stress essence. Structural construction should pay attention to the lateral stiffness, and master its lateral deflection, especially the steel frame lateral stiffness difference, master the error limit is more important.
Step 3: Anticorrosion
Anti corrosion measures for light steel structure, if shot blasting is used to remove rust, it is necessary to obtain Sa2.5 grade. Normally, the paint is painted within 4h after shot blasting. If it is better than this limit, it is easy to produce oxide layer in the name of steel without friction.
Step 4: roof design - wall structure
The roof design and roof construction should be the same as the dominant wind direction in dry season, and the flow form of hidden buckle roof panel should be adopted. The male and female buckle of color steel profiled plate should be matched accurately.
The cold bridge in light steel structure should be treated well. The connection between roof bracket and purlin should be covered with anti-corrosion wood pad, and the cold bridge should be cut. The connection of roof insulation layer should be overlapped by double staggered joints or by removing reeds. The joints of wall insulation layer should be connected by adhesive extrusion.
