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1. Before the installation of the fence guardrail, it is usually the lower foundation of the civil engineering that has been formed to deliver bricks or concrete, and the guardrail can be used to use the Bolingtai guardrail, and the Bolingtai guardrail mechanic expansion bolt, chemical screw inspection and other ways to fix the column steel substrate plate in the center of the lower foundation for straight line distribution.
2. If the lower foundation of the wall has not yet been formed, it is recommended to increase the length of the column steel lining and directly embed it in the wall, and the formal construction can be carried out after the wall curing period; Or the prefabricated embedded parts are laid in the wall plane after the column steel lining is welded with the embedded parts, and the characteristics of these two methods are more solid than the bolt connection, but the straight line and the horizontal line must be paid attention to when preset.
3. The spacing of the column steel lining should be consistent with the design size to ensure that the pre-assembled semi-finished products can be connected with each other.
4. Pull the upper and lower limits of the two parallel lines in the whole section of the straight line distance as the installation adjustment benchmark. Ensure the straightness of the upper and lower ends of the guardrail after the installation is completed.
5. The horizontal and vertical steel lining of the guardrail has been installed and connected before leaving the factory, and the reinforcing accessories of each bearing point have also been installed in place.
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