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scaffolding

Scaffolding erection problems

A. No scaffolding erection plan and design calculations

During the inspection found that some sites no erection program, some are too simple program, but the preparation, calculation error, and without approval, can not guide the construction site. Moreover, the construction workers only verbally confessed to the workers, they begin to blind job, a serious violation of the "normative" in "construction design should be the requirements relating to scaffolding" and "Construction Safety Management Regulations" Construction on the need to prepare special provisions in the program.

2. The base installation does not meet the required

"Standard" requirement: "a lot of plate 2 should be adopted across the length and thickness of not less than 50cm wooden pallets, are also available channel." But in checking the site to see a lot of scaffolding pole bottom bottom side only a small or short planks of wood paving. scaffolding erection is completed and put into use, due to the gradual increase in load, coupled by the wind and rain and other climate, then the basis is not a result of compaction, it is likely to cause uneven settlement of the frame body, causing deformation.

3. Pole did not stagger the joints

Inspection found that part of the site in the erection process, the pole is not in strict accordance with specifications, or follow the old ways in which the adjacent pole staggered, did not meet the synchronization across a pole in the direction of joints staggered in height is not less than 500mm provisions, resulting in frame strength is not enough.

4. Scissors are not required to set

"Norm" states: "the height of 24m above the outer side of the double scaffolding shall be continuous throughout the height set scissors." During the inspection found that some sites are more problems, such as the span is not enough, not continuous, not through, not take root, will not achieve stability in the role of the frame body. In addition, "norms," states: bridging the length of diagonals lap 1m, while some only 400 ~ 500mm long, then only 2 fasteners. Furthermore, scaffolding has been erection 5, 6 or all steps complete erection, no scissors, but by the urge to fill after the ride.

5. Even the wall piece set unreasonable

"Norm" states: "more than double the highly 24m scaffolding parts must be rigid and buildings connected with the wall." During the inspection, found some pieces of the site set up with the wall is too small, some with flexible joints, causing instability in the frame body. Wall also found some pieces of the site is not even reliable connection with the building, there is no effect.

6. A small bar set unreasonable

Specification rack on the master node to co-ordinate the small bar, and some site erection of the methods used across the root, but saved some material, but on the whole a certain risk. While a small bar settings should also consider the laying plate frame, shall not violate the norms "of two scaffolding boards and the extended length of not more than 300mm" requirement.

7. Frame body puts up high enough

"Norm" states: "pole to the top should be above the parapet epithelial 1m, above the cornice epithelial 1.5m". Mainly to ensure the safety of construction workers, but the examination revealed a small part of the scaffolding and construction site are not synchronized, lower than the operating level, there is a big accidents.

8. Safety nets linked to non-standard design

Material part of the site failed a safety net, lashing insecure, the two networks do not converge, hanging set is inconsistent, and too many holes in dense mesh would not achieve protective effect of damage, the individual site did not seek to set Anquan Ping Network, the implementation of protective measures enough.

9. Security is not in place

"Standard" provides: "scaffolding board shop should be covered with steady, leaving the wall 120 ~ 150mm, from the top down to operational level of the scaffolding board basis, should be every 12m over a layer of scaffolding board." In fact part of the site failed to do, or even no shelves, only instead of a square frame of wood or steel plate. Some have shelves of local operational level, but more than the probe panel, unused wire binding, is likely to cause workers to fall down.

10. Inspection and acceptance

"Standard" provides: "scaffolding and foundation should be inspection and acceptance of the following stages. ① based scaffolding erection before and after completion; ② layer Shijia He set before the operation; ③ 10m ~ 13m per ride height after the end; ④ reached the design height; ⑤ After the event six winds and heavy downpours, freezing cold areas open; ⑥ lay more than 1 month. " Found during inspections are still some sites fail to regulations. Information security management in check can not see the scaffolding inspection and acceptance of information, and scaffolding has been put into use. Although some site inspection and check information, but fails to stage acceptance, no erection responsible person, the signature of acceptance, would not achieve the role of witness.

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