Working at heights

Peripheral operation refers to the high work at the construction site where there is no enclosing facility or enclosure at the edge of the working surface when the height is less than 80cm. The following operating conditions belong to the edge operations: 1. The perimeter of the pit, the unprotected balcony, the material platform and the picking platform, etc.; 2. The unprotected floor and the surrounding of the floor; 3. The unprotected stairway and the ladder mouth...

High-level operations in building construction mainly include five basic types of bordering, opening, climbing, suspension, and crossover. These types of high-level operations are the main locations where high-level workplace casualty accidents may occur.

First, the side job

Peripheral operation refers to the high work at the construction site where there is no enclosing facility or enclosure at the edge of the working surface when the height is less than 80cm. The following operating conditions belong to the side job:

1. Around the pit, there is no protective balcony, material platform and picking platform;

2, no protective floor, floor surrounding;

3. Unprotected stairways and ladder mouths;

4, derrick, construction elevators, scaffolding and other channels on both sides;

5, around the vertical transport unloading platform.

Second, the protective requirements of the border operations

1. Around the floor, there must be erected guardrails around the structure.

2. The temporary guardrail must be installed on the stairway and the section side of the stratified construction. The top level stairwell should be installed with formal protective railings as the construction progresses. (EHS.CN)

3. Protection railings must be provided on both sides of the culvert and construction elevators, scaffoldings, etc., and the building access. Safety shelters should be installed in the upper part of the ground channel.

4. All kinds of vertical transportation and receiving platforms, except for guard rails on both sides, safety doors or movable guard rails shall be provided on the platforms.

Third, the protection of the railing material

1. The safety gate is welded with steel bars. The rod diameter on the bar must not be less than 16mm, the diameter of the lower bar should not be less than 14mm, the diameter of the balustrade column should not be less than 18mm, the height of the external construction elevator is 1.2m, and the height of the elevator shaft is 1.8m. Welding fixed.

2, the remaining side of the protective railings using steel pipes, fasteners set up and brushing yellow and black alert colors.

Fourth, the protective railing structure requirements

1. The guard railing shall consist of two rails and railings: the upper rail is 1.0-1.2m above the ground and the lower rail is 0.5-0.6m above the ground. When the length of the bar is greater than 2m, a railing must be added.

2. The fixing of the railing column should meet the following requirements:

(1) When it is fixed around the foundation pit, it is welded to the steel pipe with the embedded part.

(2) When the concrete floor, roof or wall is fixed, the embedded parts can be welded with steel pipes and steel bars.

(3) When fixing on bricks or blocks, prefabricated concrete blocks of 80X60 bent flat steel with suitable specifications can be pre-assembled and then fixed by the above method.

(4) When the outside of the border faces the street, except for protective railings, the open facade must be full of safety nets.

V. Ground Passage Protection Plan

The entrance and exit of the passageway is set up with a 3m wide safety shelter. The top of the gate is covered with two 5cm bamboo springboards. The distance between the two floors is 5Ocm. The bamboo springboard is fixed around the old template with the same height. The outside of the template is brushed with red and white. Safety warning color, warning color lines and the ground into an angle of 45 degrees. Both sides of the channel are closed with a close-packed safety net. The height of the shed is not less than 3m and the length is not less than 6m. There are tens of thousands of exporting safety warning signs on the exit, and tens of thousands of warning signboards for safe passage signs.

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