I unit of a shopping center construction project, 4.2 meters high, four floors.Because the first floor is adjacent to the building, the scaffold can not be erectedWe would like to use 20 channel three from 2 to 15 meters, ask how much channel spacing?
The requirements for the erection of the overhanging scaffolding are as follows: placing cantilevered steel beams, welding the upright pole base, and erecting the bottom upright pole from both sides of the corner from side to side; the bottom end and the longitudinal sweeping rod are buckled and fixed, and the transverse sweeping rod is installed
At the end of the shelf and around the corner of the building, a scissors brace must be provided, and the number of roots for each pair of scissors to stand across the vertical bar should be between the roots of the 5--7. The width of each shear brace shall not be less than 4, and shall not be less than 6m. The angle between the inclined bar and the ground shall be between 45~60 degrees. Scissors should take bottom to top longitudinal continuous setting, middle scissors between the spacing should be less than 15m. A double row scaffold with a height of 24m or more shall be provided with scissors support in the whole length and height of the outer facade.
Placement of the cantilever beam, welding rod base, since the corner in order to both sides of the bottom vertical pole, bottom and vertical sweeping bar buckle is fixed, installed in the horizontal sweep shot, and is fixed with a vertical rod, each side up 3--4 pole, then installed the first step (longitudinal flat bar and the vertical and lateral buckling) fixed flat bar (a small bar, near the pole and longitudinal vertical rod fastening fixed). To correct the vertical and horizontal lever of the upright pole to meet the requirements, tighten the fastening bolts according to the 45--55N & M force to form the initial section of the frame, and then extend forward in accordance with the above requirements until the first step of the rack is completed. After crossing the circle, the quality of the structure shall be thoroughly checked, and the design requirements and the quality of the frame shall be strictly ensured. The end wall parts shall be provided, and the second and third steps shall be erected according to the operation procedures and requirements of the first step...... In accordance with the erection process and the fashion set, the wall piece and the scissors support are provided with a work layer, a cross bar, a foot board and a work layer railing, a foot blocking board and a close mesh net.
You set the bar spacing 1.5 meters, step distance 1.8, the general parameters know the spacing of the channel.
