Scaffolding is an indispensable temporary facility in the construction, installation and maintenance
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It is erected with the progress of the project
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After the erection, it needs to pass the acceptance before it can be put into use
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The project production manager shall organize the scheme preparer, technical director, safety supervision director and erection team to participate in the acceptance
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The company’s technology department and safety department can send people to participate in the acceptance, and all kinds of inspection The acceptance record shall be filled in and signed by all parties participating in the acceptance
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So what are the specific inspection items of scaffold acceptance, the following small series will give you a detailed introduction
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1
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Acceptance of scaffold foundation and foundation (1) the construction of scaffold foundation and foundation must be calculated according to the height of scaffold erection and the soil condition of erection site according to relevant regulations; (2) whether the scaffold foundation and foundation are compacted; (3) whether the scaffold foundation and foundation are flat; (4) whether there is water in the scaffold foundation and foundation
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2
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Acceptance of drainage ditch of scaffold body: (1) debris removal and leveling of scaffold erection site, and smooth drainage; (2) distance between drainage ditch setting and the outermost upright pole of scaffold; (3) width and slope of drainage ditch
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3
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Acceptance of base plate and bottom support of scaffold (1) the acceptance of base plate and bottom support of scaffold is determined according to the height and bearing capacity of scaffold; (2) the area and thickness of base plate of scaffold must be strictly calculated; (3) the bottom support of scaffold must be placed in the center of base plate; (4) the width of bottom support of scaffold shall be greater than 100 mm and the thickness shall not be less than 50 mm
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4
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The acceptance of the scaffolds’ sweeping pole: (1) the sweeping pole must be connected with the upright pole, the horizontal height difference shall not be greater than 1m, and the distance from the slope shall not be less than 0.5m; (2) the longitudinal sweeping pole shall be fixed on the upright pole no more than 200 mm away from the base with right angle fasteners; (3) the transverse sweeping pole shall be fixed on the upright pole close to the longitudinal sweeping pole with right angle fasteners
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5
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Acceptance standard for main body of scaffold (1) the load of scaffold shall not exceed 300kg / m2, and special scaffold shall be calculated separately
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(2) the vertical deviation of the vertical pole should be accepted according to the height of the frame, and its absolute difference should be controlled at the same time
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(3) when the scaffold pole is lengthened, except that the top of the top layer can be overlapped, the joints of other layers must be connected with butt fasteners, and the joints of the scaffold body shall be staggered
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(4) the large cross bar of scaffold must be set continuously, and shall not be set in the same span
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The cross bar on the side of scaffold should be 10 ~ 15cm out of the frame
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(5) the small cross bar of the scaffold should be set at the intersection of the vertical bar and the large cross bar
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It must be connected with the vertical bar with right angle fasteners and fixed on the longitudinal horizontal bar
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(6) the fasteners must be used reasonably in the process of frame erection, and the fasteners with sliding wire or cracks must not be used in the frame
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6
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The acceptance standard of scaffold board (1) the scaffold board must be fully paved after the scaffold is erected on the construction site, and the scaffold board must be correctly butted
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At the corner of the shelf, the scaffold board should be staggered and firmly bound, and the uneven parts should be padded and nailed with wood blocks; (2) the scaffold board of the operation layer shall be smooth, full and tightly packed, and firmly bound
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The probe length of the scaffold board at the end 12 ~ 15cm away from the wall shall not be greater than 20cm
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The scaffold board can be laid by butt joint or lap joint
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7
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Acceptance of wall connecting parts of scaffold (1) wall connecting parts must be set at both ends of the scaffold, and the vertical spacing of wall connecting parts shall not be greater than the floor height of the building, and shall not be greater than 4m (two steps)
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When wall connecting parts cannot be set at the lower part of the scaffold temporarily, throw bracing can be set up; (2) the single and double row scaffolds with scaffold height less than 24m shall be reliably connected with the building by using rigid wall connecting parts, or by using wall attached connection with scaffold tube, tie bar and top support, and anti-skid measures shall be set at both ends; (3) the single and double row scaffolds with scaffold height more than 24m shall be reliably connected with the building by using rigid wall connecting parts; (4) the wall connecting rod or tie bar in the wall connecting parts should be set horizontally
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When it cannot be set horizontally, the end connected with the scaffold should be connected downward and reliably; (5) the wall connecting parts should be set from the first longitudinal horizontal rod at the bottom of the scaffold body, and the wall connecting parts should be set close to the main node
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The diamond layout is preferred, and the square and rectangular layout can also be used
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8
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Acceptance of scaffold cross bracing (1) for scaffolds more than 24m long, one cross bracing must be set at each end of the outer facade, and it shall be set continuously from bottom to top; (2) a number of continuous cross bracing from bottom to top shall be set inside the load-bearing and special shelves
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Whether the inclination angle between the diagonal bar of cross bracing and the ground is between 45 ° and 60 ° or not, and the width of each cross bracing shall not be less than 4 spans, and shall not be less than 6m
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9
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The acceptance of the up and down measures of the scaffold (1) there are two kinds of up and down measures of the scaffold: hanging the ladder and setting up the “Z” shaped footpath or inclined footpath; (2) the ladder must be set continuously and vertically from low to high, and must be fixed once every 3M vertically, and the top hook must be tied firmly with 8 ᦇ lead wire; (3) the upper and lower footpath must be erected together with the height of scaffold
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The width of pedestrian footpath shall not be less than 1m, and the gradient shall be 1:6
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The width of material transportation footpath shall not be less than 1.2m, and the gradient shall be 1:3
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The spacing of anti-skid strips is 0.3m, and the height of anti-skid strips is about 3 ~ 5cm
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10
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Acceptance of scaffold fall prevention measures: (1) if the construction scaffold needs to be hung with safety net, the safety net must be flat, firm and complete; (2) the outer side of the construction scaffold must be equipped with dense mesh net, which must be flat and complete; (3) the fall prevention measures should be set every 10 ~ 15m of the vertical height of the scaffold, and the dense mesh net should be set on the outer side of the scaffold in time
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Wechat dedicated submission mailbox of China work safety news dakajiadao@sina.com Source: construction work safety China work safety news new media center editor: Wang Fucheng.
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