What are the standards for edge protection of foundation pits?

The foundation pit edge protection specifications are very important. All walks of life have their own standards. Each detail proposed is very critical. Zhongda Consulting will briefly explain to you the specifications for edge protection of foundation pits.

Involving the requirements for protection at the edge of the construction site are: "Technical Specifications for Safety of Work at Height in Construction" JGJ80-2016, "Technical Specifications for Safety of Fastener Steel Pipe Scaffolding in Construction" JGJ130--2011, " Safety Technical Specifications for Bamboo Scaffolding in Construction" JGJ254--2011, "Safety Technical Specifications for Gantry and Derrick Material Hoist" JGJ88--2010, "Safety Technical Specifications for Construction of Deep Foundation Pit Projects" JGJ311--2013, "Safety in Construction Safety" Inspection Standards" JGJ59--2011 and other specifications.

1. Edge operations refer to operations at heights where there is no enclosure on the edge of the working surface or where the height of the enclosure facility is less than 800mm, including the edges of floor slabs, stair sections, roofs, balconies, and various types of Work at heights on the edge of pits, ditches, troughs, etc.

II. Excerpts from "Technical Specifications for Safety in Construction Construction at Heights" JGJ80-2016

4.1.1 When performing edge operations with a fall height of 2m or above the reference plane, the operator should be in the air A protective railing is set up on one side and should be closed with a dense safety net or a tool-type fence.

4.1.2 Protective railings should be installed at stairwells, stair platforms and ladder edges in layered construction; external stairwells, stair platforms and ladder edges should also be closed with dense mesh safety nets .

4.1.3 At the outer edge of the building, a dense-mesh safety net should be used for full closure. For projects with external scaffolding, the dense-mesh safety net should be installed on the outer poles of the scaffolding and Closely connected to the scaffolding poles; for projects without external scaffolding, dense mesh safety nets should be used to completely seal the edges.

4.1.4 Protective railings and toeboards should be installed on both sides of the passage platform between various vertical transportation equipment and facilities such as construction lifts, gantry and derrick material hoists, and buildings, and should be equipped with Closed with dense mesh safety net or tool-type fence. 4.1.5 Floor protective doors with a height of not less than 1.80m should be installed at the entrances of various vertical transportation material receiving platforms, and anti-opening devices should be installed; isolation facilities should be installed in the middle of the multi-cage derrick material hoist channel.

3. Excerpt from "Safety Technical Specifications for Fastener Steel Pipe Scaffolding in Construction" JGJ130--2011

6.7.2 The structure of the ramp should comply with the following regulations:

< p>1 The ramp should be attached to external scaffolding or building installations;

2 The width of the material conveying ramp should not be less than 1.5m, and the slope should not be greater than 1:6; the width of the pedestrian ramp should not be less than 1m, The slope should not be greater than 1:3;

3 A platform should be set up at the corner, and its width should not be less than the width of the ramp;

4 Railings should be set up on both sides of the ramp and around the platform and foot guards. The height of the railing should be 1.2m and the height of the toeboard should not be less than 180mm.

9.0.11 Scaffolding boards should be laid firmly and tightly, and a double-layer safety net should be used at the bottom. Safety nets should be closed every 10 meters below the construction layer.

9.0.12 Single- and double-row scaffolds and cantilevered scaffolds should be fully enclosed with a dense-mesh safety net along the periphery of the frame body. The dense-mesh safety net should be installed on the inside of the outer pole of the scaffold and should be Tie firmly with the frame.

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