What is border defense?

Edge protection refers to the periphery of the balcony without railings, the periphery of the roof without external frame protection, the periphery of the floor of the frame project, the sides of the upper and lower runways and ramps, and the side of the unloading platform. Prevent this situation and enhance security.

The safety points are as follows:

1, the edge of deep foundation, the edge of stairs, the periphery of roof, the periphery of lighting well, the periphery of transfer platform, the edge of balcony, both sides of pedestrian passage and unloading platform must be protected by two steel pipes, and the steel pipes should be painted with red and white signs;

2. Two protective railings must be erected on the outer side of the temporary shelf used for binding and strengthening side beams and columns;

3, tic-tac-toe crane and cargo elevator unloading platform must be installed on the side of the protective door. The protective door must be a switch door welded with steel bars, and bent steel bars are not allowed to be used as protective doors;

4, limb operations, must set up safety warning signs;

5. When the outside of the limb operation is close to the street. In addition to setting protective railings, baseboards and closed safety nets, rigid closure measures such as Beijing-Pakistan should be taken for the facade to prevent falling objects from injuring people during construction.

What are the safety protection requirements of "Five Sides"? (1) "Pentagonal" refers to the periphery of a ditch, pit or ditch with a depth exceeding 2 m; Around the roof (working face) and frame structure floors without external scaffolding in building engineering; Cross-frame, gantry, both sides of external elevators and scaffolding, as well as passages, upper and lower runways and inclined sidewalks of buildings; Fence board, railing balcony, material platform and the periphery of the platform are not installed; It's by the stairs of the construction project. (2) The protective railings must be set in the five limb. The protective railing consists of an upper railing and a lower railing column. The height of the upper rail from the ground is 1.2m, and the height of the lower rail from the ground is 0.6m For the inclined roof with a slope greater than 1: 2, the protective railing should be higher than 1.5m, and a safety net should be hung. When the length of the crossbar exceeds 2m, a railing column must be added; Water supply and drainage ditches, bridge works, mud pools and other dangerous parts should be effectively protected. (3) The edge protection of various vertical transportation unloading platforms must be in place, with two protective railings and safety nets 1.2m high on the side and protective doors at the entrance. 1.2m high color steel plate is fully enclosed, and the platform mouth should also be provided with a safety door with kicking protection or a movable protective railing. The bottom plate of the discharging platform is required to be laid with hard plates such as wooden boards and steel plates of more than 4cm, and equipped with anti-skid strips. It is forbidden to use only bamboo feet. The supporting points and upper tension nodes of the cantilever steel platform must be located on buildings, not on construction equipment such as scaffolding. The diagonal tie rod or steel wire rope should be provided with two front and rear sections on each side of the structure, and each of the two sections should be used for single-track force calculation.