04 safety passage and protective shed 1.
In the operation area, operation platform, pedestrian passage, construction passage, transportation and material receiving platform and other construction sites in the construction site, when the edge operation is carried out with a falling height of 2m or above the reference level, protective railings shall be set at the free side and closed with dense safety vertical net or tool type fence.
There are so many edges, openings and dangerous areas on the construction site, how can we do a good job of safety protection? 01 edge protection 1.
2.
Vertical landing openings such as elevator shaft openings and tube shaft openings with a width of more than 400mm must be provided with protective doors.
When the length of the short side of the non vertical opening is greater than or equal to 1500mm, a protective railing with a height of not less than 1.2m shall be set at the working side of the opening, and a skirting board with a height of 180mm shall be set under it.
During processing, the contact parts between channel steels shall be fully welded or mechanically connected reliably without missing welding.
When the length of the short side of the vertical opening is less than 500mm, blocking measures shall be taken.
The height of the upper bar from the protective surface is not less than 1.2m, and the height of the lower bar from the protective surface is not less than 0.6m.
The bottom of the frame shall be hard closed and covered with a dense mesh net and a horizontal safety net..
Isolation railings shall be set at the side of the safety passage to guide pedestrians to pass through the safety passage.
The protective railing shall not be less than 200mm from the opening, and shall be closed with a dense safety vertical net or a tool type fence.
The external facade of the attached lifting scaffold must be fully hung with a dense mesh safety net, and a steel mesh with a hole diameter of no more than 25mm shall be hung on its inner side.
People and materials may fall on the ground, floor, roof and wall.
02 portal protection 1.
The protective railing is composed of two upper and lower cross bars, railing posts and hard toe boards with a height of not less than 180mm.
The surface of the railing shall be painted with yellow and black warning paint, and the opening shall be closed with a safety flat net.
2.
6.
The triangle support type operating platform of the elevator shaft shall be no less than [10 channel steel (or 80mm × 80mm square steel for main beam), [8 channel steel (or 60mm × 60mm square steel for secondary beam), 3mm thick steel plate Φ 48 steel pipes and other auxiliary materials are welded.
Portal protection is required for high-altitude operations at the portal with a falling height greater than or equal to 2m.
Lighting devices shall be set for those requiring night construction.
3.
The safety protection at the construction site includes the common protection at 7 construction sites, such as edge protection, portal protection, shaft protection, safe passage and protective shed, external scaffold, lightning protection and external power protection, and cantilever steel platform.
Source of article: with the increasing number of engineering projects, the construction industry has more and more employees, with large mobility, long construction period, complex types of work and other industry characteristics, resulting in great difficulty in the safety management of the construction site.
3.
For openings with side length greater than 5000mm, protective railings and 180mm high skirting boards shall be directly erected at 200mm around the opening.
4.
Openings with side length greater than 1500mm but less than 5000mm shall be provided with 1000 mm steel pipes connected with fasteners × 1000mm grid with full cover plate or safety flat net.
The ends of the single-piece scaffold and the middle disconnection part shall also be fully hung with a dense mesh safety net and a steel mesh.
Side bending prevention measures shall be taken when channel steel is used as the main cantilever beam.
Lattice column support shall be designed for those with large space.
The elevator shaft and tube well must be equipped with protective facilities to prevent people from falling and objects from injuring people, and obvious signs shall be added for warning.
The cantilever beam of cantilever scaffold shall be determined according to the load of cantilever frame and cantilever length.
If necessary, dense mesh net shall be hung to close it.
It is forbidden to use scaffold steel pipe as the main cantilever beam.
When the length of the short side of the vertical opening is greater than or equal to 500mm, protective railings with a height of not less than 1.2m shall be set at the free side, and closed with dense safety vertical nets or tool type railings, and toe boards shall be set.
A hard partition shall be erected every two layers and no more than 10m in the hoistway, and a safety flat net shall be added between each two layers of horizontal hard partition.
3.
03 shaft protection 1.
When the length of the cross bar is greater than 2m, additional railing posts shall be provided.
3.
The top of the safety passage and protective shed shall be closely laid with horizontal hard protection of double-layer orthogonal bamboo string piece scaffold board or double-layer orthogonal 18mm thick wood formwork, and closed protective fence or baffle, which shall be able to bear the uniformly distributed static load of 10KPA as a whole.
5.
2.
The cantilever scaffold used for construction should use I-steel above 16 as the main cantilever beam, the overhang section should not exceed 1.50M, and the anchoring section should not be less than 1.25 times of the overhang section.
When the access to the street, the access to the site, the access to the building, the operation passage of the ground feed inlet of the construction elevator and material hoist is within the falling radius or within the slewing range of the crane boom, protective sheds and protective channels must be set to avoid the occurrence of biological attack accidents.
2.
4.
When steel plates or other materials with the same strength are used for erection, single-layer hard protective erection can be used, and the thickness of the steel plate shall not be less than 3mm.
When single-layer hard protective erection is used, a horizontal pocket net shall be set at the upper 700mm.
When there is a possibility of crowd, vehicle impact or object impact at the position where the railing is located, the cross section of the cross bar shall be increased and the column spacing shall be increased.
The overall structure of the protective railings shall enable the protective railings to withstand 1kn external force in any direction without obvious deformation or fracture.
Therefore, doing a good job of safety protection is of great significance to ensure the life safety of on-site construction personnel.
05 external scaffold protection 1.
2.
If the safety protection facilities on the construction site are not in place and the safety protection management measures are not perfect, it is easy to cause safety problems, cause casualties and economic losses, and seriously threaten the production safety of the construction project.
The ground feed inlet and the top of the safety passage within the falling radius of the construction personnel and cargo elevators and material hoists shall adopt double-layer protection.
