1. Scaffolding poles
It is the key component of the scaffolding, the main force-bearing rod, and the component responsible for transmitting and bearing force. The pole spacing should be set evenly and should not be greater than the design spacing, otherwise, the bearing capacity of the pole will be reduced. The erection of the pole should meet the following requirements:
1) A base or pad should be set at the bottom of each pole (when the scaffolding is erected on the concrete base of a permanent building structure, the base or pad under the pole may not be set according to the situation).
2) The scaffolding must be equipped with longitudinal and transverse sweeping rods. The longitudinal sweeping rod should be fixed to the pole at a distance of no more than 200mm from the bottom of the steel pipe with a right-angle fastener. The transverse sweeping rod should also be fixed to the pole close to the bottom of the longitudinal sweeping rod with a right-angle fastener.
3) The pole must be reliably connected to the building with a wall connection.
4) When the pole foundation is not at the same height, the longitudinal sweeping rod at the high position must be extended to the low position by two spans and fixed to the pole, and the height difference should not be greater than 1m. The distance from the axis of the vertical pole above the slope to the slope should not be less than 500mm, and the step distance of the bottom layer of the scaffolding should not be greater than 2m.
5) Except for the top step of the top layer, the joints of each layer and step must be connected with butt fasteners. The butt joint can improve the bearing capacity. The bearing capacity of a butt joint is 2.14 times greater than that of the overlap. Therefore, when erecting poles, pay attention to the length of the poles. The top step pole of the top layer refers to the top railing pole
6) The upper part of the pole should always be 1.5m higher than the operating layer and be protected. The top of the pole should be 1m higher than the upper skin of the parapet and 1.5m higher than the upper skin of the eaves.
7) The extension and butt joint of scaffolding poles shall meet the following requirements:
① The butt joint fasteners on the poles shall be arranged in a staggered manner; the joints of two adjacent poles shall not be set in synchronization, and the distance between the two joints separated by one pole in synchronization in the height direction shall not be less than 500mm; the distance from the center of each joint to the main node shall not be greater than 1/3 of the step distance.
② The lap length shall not be less than 1m, and shall be fixed with no less than 2 rotating fasteners, and the distance from the edge of the end fastener cover plate to the pole end shall not be less than 100mm.
2. Longitudinal horizontal bars of scaffolding
1) The step distance of the longitudinal horizontal bars shall not exceed 1.8m;
2) It shall be set on the inner side of the pole, and its length shall not be less than 3 spans;
3) The longitudinal horizontal bars shall be connected or overlapped by butt joint fasteners.
①When docking, the docking fasteners of the longitudinal horizontal bars should be arranged alternately. The joints of two adjacent longitudinal horizontal bars should not be set in the same synchronization or span. The horizontal distance between two adjacent joints of asynchronous or different spans should not be less than 500mm; the distance from the center of each joint to the nearest main node should not be greater than 1/3 of the longitudinal distance.
②The lap length should not be less than 1m, and 3 rotating fasteners should be set at equal intervals. The distance from the edge of the end fastener cover plate to the end of the lapped longitudinal horizontal bar should not be less than 100mm.
③When using stamped steel scaffolding boards, wooden scaffolding boards, and bamboo string scaffolding boards, the longitudinal horizontal bars should be used as supports for the transverse horizontal bars and fixed to the vertical bars with right-angle fasteners. Click >> Free download of engineering materials
④When using bamboo fence scaffolding boards, the longitudinal horizontal bars should be fixed to the transverse horizontal bars with right-angle fasteners and should be arranged at equal intervals, and the spacing should not be greater than 400mm.
3. Horizontal bars of scaffolding
1) A horizontal bar must be set at the main node, fastened with right-angle fasteners, and strictly prohibited from being removed. The center distance between the two right-angle fasteners at the main node should not be greater than 150mm. In double-row scaffolding, the extension length of the end against the wall should not exceed 0.4 lb and should not be greater than 500mm.
2) The horizontal bars at non-main nodes on the working layer should be set at equal intervals according to the needs of supporting scaffolding boards, and the maximum spacing should not be greater than 1/2 of the longitudinal distance.
3) When using stamped steel scaffolding boards, wooden scaffolding boards, and bamboo scaffolding boards, both ends of the horizontal bars of the double-row scaffolding should be fixed to the longitudinal horizontal bars with right-angle fasteners; one end of the horizontal bar of the single-row scaffolding should be fixed to the longitudinal horizontal bar with a right-angle fastener, and the other end should be inserted into the wall, and the insertion length should not be less than 180mm.
4) When using bamboo scaffolding boards, both ends of the horizontal bars of the double-row scaffolding should be fixed to the vertical bars with right-angle fasteners; one end of the horizontal bar of the single-row scaffolding should be fixed to the vertical bar with right-angle fasteners, and the other end should be inserted into the wall with an insertion length of not less than 180mm.
Post time: Aug-23-2024