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Anonymous users2024-01-23There is no provision in the construction industry for how much the ground construction distance is a safe distance from the outer row frame, as long as the scaffolding structure, use or dismantling components are not changed during use, and the scaffold is not hit, the ground construction can be carried out as usual.
Erection points. 1) Foundation cleaning.
Before the construction row frame is erected, the vertical pole foundation is cleaned first, to ensure that the construction row frame is located in a stable and flat part, and the pumice stone and loose block of the foundation are removed, so that it sits on the rock foundation.
2) Material preparation.
Prepare accessories that meet the quality standards before erecting the construction rack, steel pipes and fasteners are made of Q235A steel, steel pipes with an outer diameter of 48mm, and welded steel pipes with wall thickness, and ensure that the mechanical properties should meet the provisions of the current national standards. Bamboo scaffold board is made of bamboo fence scaffold board or bamboo scaffold board, and all moth-eaten, brittle, and loose bamboo scaffold board shall not be used.
3) Pole erection.
The horizontal distance of the vertical rod is, and the longitudinal distance is. The upright rod and the large crossbar are fastened with right-angle fasteners, and connecting fasteners are arranged at each step. Before fastening the connecting fasteners, the lifting hammer is used to ensure the verticality of the vertical rod, and the control deviation is not greater than 1 300 of the frame height, and the absolute deviation value is not more than 50mm at the same time.
The length of the vertical rod is staggered and arranged in different crossbar steps, and the probe should be greater than 10cm when using socketing, and the length should not be lapped to one side.
4) Large crossbar erection.
The large crossbar step distance is. The lengthening position of the upper and lower crossbars is staggered and arranged in different vertical rod longitudinal distances, and the distance between the upper and lower vertical bars is not greater than one-third of the longitudinal distance. The horizontal deviation of the same row of large crossbars is not greater than 1 250 of the total length of the piece construction row frame, and is not more than 50mm, and before fastening the connecting fasteners, the level ruler is used to ensure the level of the crossbars.
The large crossbars of the adjacent step frame should be staggered on the inside and outside of the upright pole to reduce the eccentric compression of the upright pole.
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