What are the border protections for four people and five people?

The "four entrances" refer to: passage entrance; stair entrance; elevator shaft entrance; reserved opening. "Five edges" refers to: edges of foundation pits and trenches with a depth of more than 2m; edges of floors and roofs without external scaffolding; edges of construction elevators and unloading platforms; edges of balconies and lifting platforms that have not yet installed railings; Staircase edges without railings installed.

Exits 1 and 4:

1. Access protection

Standardized protective sheds should be set up at the entrances of buildings, construction elevators, and on-site entrances and exits, with a length greater than the height of The free fall radius, width and height meet the project requirements. When the building height exceeds 24m, double-layer protection should be installed on the top. The protective shed is assembled entirely from steel, making it easy to install, stable and reliable.

2. Stairway protection

Steel pipe or stereotyped protective railings should be installed at stairwells constructed in layers. The height of the upper pole from the ground should not be less than 1.2m, and the height of the lower pole from the ground should not be less than 1.2m. Greater than 0.6m. Both types of protective railings are fastened with bolts, which is safe and convenient. The length of the standardized railings can also be adjusted telescopically.

3. Elevator wellhead protection

The elevator wellhead is equipped with a stereotyped protective door, which is mesh-type closed. A 200mm-high foot guard is set at the bottom, and an obvious warning slogan is set in the middle.

4. Reserve hole protection

For holes with a short side size less than 1500㎜, use a cover plate with a bearing capacity that meets the requirements, and fix it firmly without shifting; short side size ≥ 1500 mm opening, a standardized protective railing with a height of not less than 1.2m is installed on the working side, a foot guard is set at the bottom, and the opening is closed with a tool-type guardrail.

Second and fifth edges:

1. The edge of foundation pits and trenches with a depth exceeding 2m

Set a height of not less than 0.5m from the edge of the pit A standardized protective railing of no less than 1.5m, with clear warning signs hung on the outside, and the poles installed firmly, capable of withstanding an external force of 1000N in any direction.

2. Floors and roofs without external scaffolding

Standardized protective railings should be installed around the roof and floors to seal them, with a height of not less than 1.2m, and a foot guard at the bottom, such as It adopts the horizontal bar type, the distance between the horizontal bars is not more than 0.6m, and the distance between the vertical poles is not more than 2m.

3. For balconies and raised platforms that have not yet installed railings, install standardized protective railings around the balcony to seal them. The setting method is consistent with the floor.

4. Stair edges where railings have not yet been installed

Stairs and rest platforms are equipped with steel pipe or stereotyped protective railings. The columns and crossbars are fixed with tool-type connectors and stereotyped. The length of the railing can be adjusted according to the length of the stairs.

5. The construction elevator and unloading platform are facing the edge

The construction elevator protective door is made of all steel and is installed with tools. The overall image is beautiful, and it is convenient and safe to use.

Extended information:

"Three Treasures" protective measures. The "three treasures of safety" in construction refers to the necessary safety helmets, safety belts and safety nets for on-site construction operations. To correctly use the "Three Treasures" protective measures, you should do the following:

① You must wear a safety helmet when entering the construction site. There should be a gap of 4-5 cm between the hat lining and the hat shell, and the hat strap should be fastened. Prevent falling off;

② All personnel working in the air above 2 meters must fasten their safety belts. If there is no condition for hanging safety belts at the suspended operation point, safety ropes or safety railings should be installed;

③A safety net must be installed below the suspended high-altitude working point.

"Four Ports" and "Five Borders" protective measures. The "four exits" and "five edges" protective measures refer to: in order to effectively prevent accidents from falling from heights and being hit by objects during construction, all entrances to stairs, elevators (including garbage openings), and reserved openings are Railings or covers must be set up, and safety nets must be erected; strong protective sheds must be erected at all entrances and exits of buildings under construction.

During the construction process, the perimeter of the balcony where railings have not been installed, the perimeter of the roof without outer frame protection, the perimeter of the frame engineering floor, both sides of the runway (chute), the outside of the unloading platform, etc. Two 1.2-meter-high protective railings, toeboards or protective nets must be installed.