What are the construction points of external scaffolding

Key points of scaffolding construction material requirements:

1) The selection of steel pipes, the thinnest wall thickness of steel pipes shall not be less than should be no serious corrosion, bending, flattening or cracks); The corrosion depth on the surface of the old steel pipe shall comply with the provisions of the "Safety Technical Code for Fastener-type Steel Pipe Scaffolding for Building Construction" JGJ130-2011. Three steel pipes with serious corrosion shall be extracted, and the most seriously corroded parts of each shall be transversely cut off for sampling and inspection, and shall not be used if the corrosion depth exceeds the specified value. In addition, the steel pipe entering the site should also be sampled and retested, and it can be used only after it is qualified.

2) The fastener warranty information should be complete, and the sampling retest should be carried out after entering the site, and the technical performance should meet the provisions of GB15831 of the "Steel Pipe Scaffolding Fasteners".

3) Bamboo scaffolding boards made of moso bamboo or nan bamboo.

4) The safety net adopts dense green net, the flame retardant standard of the safety net implements the national standard, and the flame retardant performance of the safety net is tested for the lighter to ignite the mesh for 12 seconds, and after leaving the first source, the flame retardant and continuous combustion do not exceed 4s. The safety net should be woven with 9mm hemp rope, brown rope and nylon rope, and each net should be able to withstand the impact test of the national standard.

5) The I-beam I20 used for cantilever scaffolding shall be made of the material in accordance with the provisions of the current national standard "Carbon Cable Structural Steel" GB T700 or "Low Alloy High Strength Structural Steel" GB T 1591.

6) The U-shaped steel bar pull ring of the fixed steel cantilever beam is made of 16mm round steel, and the material should comply with the provisions of the HPB235 grade steel bar in the current national standard "Steel for Reinforced Concrete Part 1: Hot Rolled Round Steel Bar" GB 1499, 1.

1. The backing plate and base should be accurately placed on the positioning line, and the backing plate must be laid smoothly and not suspended.

2. When erecting columns, it is strictly forbidden to mix steel pipes with different outer diameters, and the butt fasteners of adjacent columns shall not be at the same height, and the staggered distance shall meet the structural requirements.

3. When starting to erect columns, a throwing brace should be set every 6 spans until the wall pieces are connected.

After the installation is stable, it can be dismantled according to the situation.

4. When the structural layer with connecting wall pieces is erected, the connecting wall pieces should be set up immediately after the columns, longitudinal horizontal rods and transverse horizontal rods at the place are erected.

5. Closed row scaffolding.

The longitudinal horizontal rod of the same step must be intersected around and fixed with right-angle fasteners and the inner and outer corner posts.

6. The distance between the horizontal rod of the double-row scaffold against the wall and the decorative surface of the wall should not be greater than 100mm.

7. When the scaffold operation layer is two steps higher than the connecting wall piece, temporary stabilization measures should be taken until the connecting wall piece is erected before it can be removed.

8. scissor support.

The transverse support should be erected synchronously with the column, longitudinal and transverse horizontal rods, etc., and the distance between the center line of the scissor brace and the transverse brace and other fasteners from the main node should not be greater than 150mm.

Pole erection requirements:

1. The scaffold pole is inserted vertically into the base, and the horizontal sweeping rod is used.

Right-angle fasteners should be used to fix on the upright rod immediately below the longitudinal sweeping rod.

2. When the lower part of the scaffold cannot be set up with wall pieces, anti-overturning measures should be taken. When erecting the throwing brace, the throwing brace should be made of ordinary rods and fixed on the scaffold with rotating fasteners, and the inclination angle with the ground is between 45 ° and 60 °;

The distance from the center of the connection point to the main node should not be greater than 300mm; When the scaffold begins to erect a pole, a throwing brace should be set every 6 spans until the wall parts are installed and stable, and then they can be removed according to the situation. The support point of the throwing brace needs to be reinforced.

3. The butt fasteners on the vertical rod should be staggered, and the distance between the two separated joints of the vertical rod in the height direction should not be less than 500mm, and the distance from the center of each joint to the main node should not be greater than 1 3 of the step distance.

4. When the foundation of the scaffold pole is not at the same height, the longitudinal sweeping rod at the height must be extended to the low place by two spans and fixed with the pole, and the height difference should not be greater than 1m. The distance from the axis of the upright pole above the slope to the slope should not be less than 500mm.

Outer scaffolding erection specifications, do you know.

What information should be done in scaffolding during construction! Hello, glad to answer for you. The information to be done for scaffolding in construction is:

When erecting scaffolding, it is necessary to scaffold the special plan for the sedan car frame (there must be specifications, calculations, thunderbolts, etc.), steel spring sheds, deduction of test reports, expert demonstration (such as the project belongs to the scope of the "construction quality 2009 No. 87" "safety management measures for sub-projects with greater risk", this demonstration needs to be consulted specifically in the "construction quality and J 2009 No. 87") construction stage documents: 1, scaffolding acceptance record 2, inspection record (daily) 3, fasteners, steel pipes, section steel, Embedded parts (if the embedded parts are made by themselves, raw material certificate is required), type certificate (each batch), I hope mine can help you! Do you have any other questions?

Dear, hello, I am glad to send a hand to answer for you: what does the scaffolding project include A: Dear, hello, the composition of the scaffolding project mainly includes:

Upright poles, longitudinal horizontal rods, transverse horizontal rods, longitudinal sweeping rods, transverse sweeping rods, fasteners (right-angle fasteners, rotary fasteners, butt fasteners, anti-slip fasteners), scissor braces (also known as cross braces, cross covers), transverse diagonal braces (also known as transverse diagonal rods, zigzag files), scaffolding boards, wall pieces (also known as wall points, wall rods), bases, etc. Thank you for your patience. The above is all my reply, if you are satisfied with my service, please give a thumbs up, and then I wish you all the best!

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<>What are the key points for the use of scaffolding erection? If you want to know the answer, the following is what are the relevant contents of the key points about the use of scaffolding erection, and the basic situation is as follows:

Scaffolding refers to the construction site for workers to operate and solve the vertical and water distribution town Sui flat transportation and erection of various supports, it is to ensure the safety of high-altitude operations, the smooth progress of the construction of the two erection of the work platform and operation channel.

According to the relevant provisions of scaffolding, the rods, components, connectors, other accessories and scaffolding boards of scaffolding must meet the following quality requirements, and those who fail to meet them are prohibited from using them.

The construction process of the frame erection is as follows: copy the flat pay-off positioning, place the longitudinal and horizontal sweeping rods, vertical rods, longitudinal horizontal rods, connecting rods, alignment, enclosure support, and acceptance.

Key points for the use of scaffolding erection:

When erecting scaffolding, a base or foundation must be added and the foundation must be treated. The backing plate must be laid on the old soil surface at the bottom of the foundation pit steadily, and the line and ruler should be pulled when the base is placed, and it should be fixed after being placed according to the specified spacing size.

The setting of the vertical pole must be equidistant and straight, and its longitudinal spacing is greater than meters, and the transverse spacing of the vertical travel pole is , meters. The pole is 40 cm from the wall. The bottom step distance is greater than 2 meters, and the length of the small crossbar to pick out the inside and outside poles shall not be less than 30 and 15 cm respectively.

A scissor brace must be set up on the outside of the scaffold every g meters.