First, Scaffolding Erection Preparation
1. Technical Preparation
- Familiarize yourself with the drawings: Construction personnel must carefully study the architectural drawings to understand the building’s structural form, height, number of stories, etc., and determine the location, height, and form of the scaffolding.
- Develop a construction plan: Based on the project characteristics and construction drawings, develop a detailed scaffolding construction plan. The plan should include the selection of scaffolding type, erection parameters, structural requirements, and safety measures.
- Technical briefing: Provide technical briefings to construction personnel, ensuring they understand the scaffolding erection methods, technical requirements, and safety precautions.
2. Material Preparation
- Procurement of materials: According to the construction plan, procure the necessary scaffolding materials, such as steel pipes, couplers, scaffold boards, and safety nets. The quality of the materials should meet national standards and construction requirements.
- Material inspection: Inspect the procured materials, including visual inspection, dimensional measurement, and mechanical performance testing. Unqualified materials must not be used.
3. Site Preparation
- Site Clearing: Clean up debris and garbage in the scaffolding erection area to ensure the site is flat and firm.
- Positioning and Marking: Based on the construction drawings, mark the location and markings on the building to determine the scaffolding’s erection position and the spacing between uprights.
Second, Foundation Treatment for Scaffolding Erection
1. General Foundation Treatment
- For ground with good soil quality, a base plate, such as wooden planks or channel steel, can be laid directly on the ground to increase the stability of the scaffolding. The base plate should be at least 50mm thick and at least 200mm wide.
- For ground with poor soil quality, foundation treatment is required. Methods such as compaction and backfilling can be used to improve the bearing capacity of the foundation. The treated foundation should be inspected to ensure its bearing capacity meets the requirements.
2. Special Foundation Treatment
- When the scaffolding is erected on structures such as basement roof slabs or floor slabs, the structure needs to be calculated to ensure it can withstand the load of the scaffolding. If the structural bearing capacity is insufficient, reinforcement measures can be taken, such as adding supports and thickening floor slabs.
- When scaffolding is erected on slopes, steps, or other similar terrain, special treatment is required. Methods such as installing diagonal bracing and adjusting the spacing of uprights can be used to ensure the stability of the scaffolding.
Third, Scaffold Upright Erection
1. Upright Positioning: Determine the position of the uprights based on the positioning and layout results. Uprights should be perpendicular to the ground, and the spacing should meet the requirements of the construction plan.
2. Upright Installation: Insert the uprights into the base or pad, ensuring the bottom of the upright is stable. Upright connections should use butt couplers, and the joints of adjacent uprights should be staggered and not at the same height.
3. Ground Bracing Installation: Install ground bracing 200mm above the ground at the bottom of the uprights. The ground bracing should be securely connected to the uprights. The purpose of the ground bracing is to enhance the stability of the scaffolding and prevent the displacement of the bottom of the uprights.
Fourth, Erection of Horizontal Members for Scaffolding
1. Horizontal Member Positioning: Determine the position of the horizontal members according to the requirements of the construction plan. Horizontal members should be installed horizontally, and the spacing should meet the requirements of the construction plan.
2. Horizontal Member Installation: Connect the horizontal members to the uprights using right-angle couplers. Horizontal members should be connected using butt couplers, and the joints of adjacent horizontal members should be staggered and not within the same span.
3. Horizontal Member Spacing: The spacing of the horizontal members should be determined according to the height of the building and construction requirements. Generally, the spacing should not exceed 1.8m.
Fifth, Erection of Scissor Bracing for Scaffolding
1. Scissor Bracing Location: Scissor bracing should be installed at regular intervals on the outside and inside of the scaffolding. The installation of scissor bracing should meet the requirements of the construction plan.
2. Scissor Bracing Installation: Scissor bracing should be connected to the uprights or horizontal members using swivel couplers. The distance from the center line of the coupler to the main node should not exceed 150mm. The angle between the diagonal brace of the scissor bracing and the ground should be between 45° and 60°.
Sixth, Scaffold Board Installation
1. Scaffold Board Selection: Select appropriate scaffold boards according to construction requirements, such as bamboo scaffold boards, wooden scaffold boards, or steel scaffold boards. The quality of the scaffold boards should meet national standards and construction requirements.
2. Scaffold Board Installation: Lay the scaffold boards on the horizontal bars. The scaffold boards should be fully and stably laid, with no protruding boards. Both ends of the scaffold boards should be firmly fixed to the horizontal bars to prevent slippage.
Seventh, Safety Net Installation for Scaffolding
1. Safety Net Selection: Select appropriate safety nets according to construction requirements, such as close-mesh safety nets or horizontal safety nets. The quality of the safety nets should meet national standards and construction requirements.
2. Safety Net Installation: Hang the safety nets on the outside and inside of the scaffolding. The safety nets should be firmly connected to the scaffolding without any gaps. The mesh count of close-mesh safety netting should meet construction requirements; generally, it should not be less than 2000 meshes/100cm².
Eighth. Acceptance and Use of Scaffolding
1. Scaffolding Acceptance: After the scaffolding is erected, it should be inspected. The inspection includes the structural form of the scaffolding, erection parameters, quality of components, and safety protection measures. It can only be used after passing the inspection.
2. Scaffolding Use: When using scaffolding, the construction plan and safety operating procedures must be strictly followed. Scaffolding must not be overloaded, and excessive materials and equipment must not be piled on it. The removal of scaffolding components is strictly prohibited. If removal is necessary, it must be approved by the technical supervisor, and appropriate reinforcement measures must be taken.
Ninth. Dismantling of Scaffolding
1. Dismantling Preparation:
- Before dismantling the scaffolding, a detailed dismantling plan should be developed. The dismantling plan should include the dismantling sequence, safety measures, etc. Technical instructions should be given to construction personnel to ensure they understand the dismantling methods and safety precautions.
- Clear materials and equipment from the scaffolding, ensuring it is free of debris.
2. Dismantling Sequence: Scaffolding should be dismantled in a top-down, dismantling-the-last-erected, and last-erected-first-dismantled order. Simultaneous dismantling of scaffolding from above and below is strictly prohibited.
3. Transportation of Components: Dismantled components should be promptly transported to the ground and neatly stacked according to their type. Components must not be thrown from heights to avoid damage and accidents.
Post time: Oct-29-2025