Cantilevered Scaffolding Installation Specification Cantilever Scaffolding Construction Plan

Scaffold refers to the various stands erected on the construction site for workers to operate and solve vertical and horizontal transportation. Common terminology in the construction industry refers to the construction site where it is used for exterior walls, interior decoration or where there is a high storey height where direct construction is not possible. So, what is the specification of the overhanging scaffolding ? What is the cantilevered scaffolding specification? Here we will take a look at the scaffolding scaffolding construction plan.

Cantilever Scaffolding Installation Specification

1, one-time overhanging scaffolding should not exceed 20M.

2. The steel cantilever should adopt biaxial symmetrical I-beam.

3. The section height of cantilevered steel girder shall not be less than 160mm, and the diameter of U-shaped steel reinforcing ring or anchoring bolt of anchorage steel shall not be less than 16mm.

4, steel wire rope using the structure of the use of HPB235-level steel rings, the diameter should not be less than 20mm.

5. The length of the cantilevered steel girder shall be calculated according to the design. The fixed length shall not be less than 1.25 times the cantilever length. The U-shaped steel bar puller or anchor bolt shall be embedded in the steel bar bottom reinforcement bar position on the concrete.

6. When the anchorage position is set on the floor, the floor slab should not be less than 120mm, and less than 120mm should be reinforced.

7. The cantilever beam is 2m in general, and the partial overhang should not exceed 3m.

There are generally two types of overhanging scaffoldings: one is for each layer, and the bottom of the pole is topped on the floor, beam or wall, etc. After being tilted and fixed outwards, a cross bar and a scaffolding plate are formed on the upper part of the scaffold. Layer, the construction of a floor height, to be transferred to the upper, and then set up scaffolding again, to provide a layer of construction; the other is a multi-storey cantilever, the full height of the scaffold is divided into several sections, the height of each section does not exceed 20m, use Cantilever beam or cantilever frame can be used as the base of the scaffold. The scaffold can be erected in sections, and scaffolding with more than 50m can be erected by this method. Scaffolding must be installed on the outer facade of the overhanging scaffold.

Cantilever Scaffolding Construction Plan

First, the construction program

1, cantilevered scaffolding must prepare a special construction program. The plan should have a design calculation book (including the calculation of the overall stability of the frame body and the force of the support bar), a more specific, more specific erection and disassembly scheme and safety technical measures, and draw a plane, elevation diagram And details of different nodes.

2. The special construction plan, including the design calculation book, must be approved by the company's technical person in charge before it can be signed and sealed.

Second, cantilever beam and frame stability

1. Pick up outside beams or cantilever frames should actively use steel or stereotype truss.

2. The overhanging profile steel or cantilever frame is fixed through the embedded structure and the building structure, and the installation meets the design requirements.

3, pick up pole and cantilevered steel connection must be fixed to prevent slippage.

4. Rigid pull knots are used between the frame body and the building structure, and a pulling node is set to be less than 7M in the horizontal direction and equal to the height in the vertical direction, and a pulling node must be set in the edge of the frame body and the corner within 1M.

Third, the foot board

Pick up layers of fully-paved foot pieces, the foot piece must be not less than 18 # lead wire double-stranded parallel tie no less than 4 points, requirements firm, smooth at the junction, no probe plate, no gaps, the foot piece should Guaranteed intact, damaged and timely replacement.

Fourth, the load

The construction load is evenly stacked and does not exceed 3.0 KN/m2. Construction waste or unused materials must be cleared in time.

Fifth, delivery and acceptance

1. The picking must be set up according to the special construction plan and design requirements. If the actual installation is different from the plan, it must be approved by the original program approval department and the plan must be changed in time.

2. Before picking up and tearing down, it is necessary to carry out targeted strong safety technology disclosures.

3. After each section is erected, the company organizes the inspection and acceptance, and the content is good. After passing the inspection, the qualified card can be put into use. Acceptance personnel must sign on the acceptance form and file the data.

Six, rod spacing

The picking distance shall not be greater than 1.8M, the horizontal pole spacing shall not be greater than 1M, and the vertical spacing shall not be greater than 1.5M.

Seven, frame protection

1. The outer side of the picking rack must be enclosed and enclosed by a qualified dense-mesh safety net certified by the construction authority. The safety net shall be tightly packed with not less than 18# lead wire. The safety net shall be hung on the side of the pole of the picker, and the net shall not be enclosed on the outside of each bar.

2. Pick a stand at a distance of more than 20cm from the building. In addition to the outer side of the picking frame and the 1.2m high guardrail installed on the construction layer, the protective side should also be protected when the side of the picket frame meets the borderline (such as large windows, door openings, etc.).

Eight, interlayer protection

Pick up the working layer and the bottom layer to apply a qualified safety net or take other measures to perform segmented closed protection.

Nine, scaffold material

1. The steel pipe scaffold should use A3 steel pipe with an outer diameter of 48mm and a wall thickness of 3.5mm. The surface should be smooth and smooth with no rust, cracks, delamination, indentation, scribes and hard bends. The new steel pipe has a factory certificate. Before erecting shelves, maintenance, rust removal and uniform painting should be performed.

2. The fasteners used in the erection of steel pipe scaffolds shall comply with the requirements of the "Standard for Fastening Steel Pipe Handles" issued by the Ministry of Construction. There shall be a fastener production license, and the specifications shall match the steel pipes. The malleable cast iron shall be used. There shall be no forgings such as cracks, air holes, shrinkage, and sand holes. Defects, flats and surfaces should be flat and flexible, and the minimum distance between openings for clamping steel pipes should not be less than 5mm.

3, steel should adopt A3 channel steel or I-beam.

The above specification about overhanging scaffolding erection and overhanging scaffold construction plan is briefly introduced here, and we hope to help you. For more information, please visit this website. Stay tuned.

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