Preventive measures for the hottest scaffold accid

2022-10-24
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Preventive measures for scaffold accidents

1 Scaffold operation layer protection requirements

scaffold board: scaffold operation layer shall be fully paved with scaffold board, which shall be close to each other and 120 ~ 150mm away from the wall; In order to make this thin material more suitable for making clothes, protective measures should be taken when the gap between the scaffold board and the building is greater than 150mm. Generally, the scaffold board should have at least two layers, the upper layer is the operation layer, and the lower layer is the protective layer. When only one layer of scaffold board is set, a layer-by-layer pocket should be set under the scaffold board. From the scaffold board of the top operation layer downward, a layer of scaffold board should be paved every 12m

protective railings and toe boards: both should be set inside the outer upright; The height of upper railing epithelium should be 1.2m; The height of toe board is 180mm; The middle bar should be set in the middle

dense mesh and pocket: the inner side of the outer row pole of the scaffold should be closed safely by dense mesh. The dense eye must be tied to the scaffold tube every 45cm with a rope that meets the requirements. Pockets shall be set on the first floor of the building, and they shall be set every three floors upward, so that the annual demand growth rate is 7.9%, and the accompanying floors are set under the business floor. The pocket should be flat and in line with the quality requirements, and tied firmly with a lanyard. No loopholes are allowed. It is not allowed to use when the dense eyes and pockets are seriously damaged

2. Requirements for the setting of wall connecting parts

in addition to meeting the calculation requirements, the layout spacing of wall connecting parts should not be greater than the maximum spacing; The wall connecting parts should be set close to the main node, and the distance from the main node should not be more than 300mm; It should be set from the first longitudinal horizontal bar at the bottom layer, otherwise it should be fixed by other reliable measures; Diamond layout should be preferred, and square and rectangular layout can also be used; Both ends of A-shaped and open scaffold must be equipped with wall connecting parts, and the vertical spacing of wall connecting parts should not be greater than the floor height of the building, and should not be greater than 4m; For single and double bent frames with a height of less than 24m, it is advisable to use rigid wall connecting parts to reliably connect with the building, and it is also possible to use tie bars and wall connecting methods that many people use in conjunction with the top support at a reasonable price when buying machines. It is strictly forbidden to use flexible wall connecting parts with only tie bars; The double bent with a height of more than 24m must be reliably connected with the building by rigid wall connecting parts; The wall connecting rod or tie bar in the wall connecting piece should be set horizontally. When it cannot be set horizontally, the end connected with the scaffold should be connected downward rather than upward

3. Cross bridging setting requirements

the number of cross bridging poles in each group is 5 ~ 7; For single and double row scaffolds with a height of less than 24m, a group must be set at both ends of the outer facade, which is set continuously from the bottom to the top with the erection of the scaffold; For double bents with a height of more than 24m, the outer facade must be set continuously along the length and height; The diagonal bridging rod shall be connected with the vertical rod and the extended horizontal rod; Overlapping is adopted for the extension of diagonal bridging rods

4. Setting requirements of horizontal bar

a horizontal bar must be set at the main node, which is fastened with right angle fasteners and must not be removed; The horizontal bars at the non main nodes on the working floor should be set at equal intervals according to the needs of supporting the scaffold board, and the maximum spacing should not be greater than 1/2 of the longitudinal distance; When using steel scaffold board, wood scaffold board and bamboo string piece scaffold board, both ends of the horizontal horizontal bar of the double bent shall be fixed on the longitudinal horizontal bar with right angle fasteners

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