What is the code for the erection of external wall scaffolding? Is there anything to be aware of?

Safety is the first priority. 1. If the erection height of the scaffolding of the exterior wall is between 25 meters and 50 meters, we need to continue to strengthen the overall stability of the scaffolding, such as continuously setting it on its longitudinal plane, and at the same time increasing the frame rate of the transverse scissors. When the wind blows, the construction of scaffolding with a height of more than 40 meters should be structurally strengthened.

2. If the height of the building has exceeded 50 meters, it is necessary to use double poles to strengthen, and at the same time, it is also necessary to unload the load in sections, to ensure that its bearing capacity is within a safe range, and it is also necessary to turn this scaffold to the cantilever beam.

The villa master provides you with local building policies, building drawings, and villa design drawings;

Villa appearance renderings service, thousands of popular drawings for you to choose.

Villa Master.

Standard specifications for the design of internal scaffolding and outer scaffolding.

Chaochao Construction specializes in scaffolding erection.

1. The foundation of the scaffold pole should meet the requirements of the scheme.

1) When the erection height is less than 25m, it can be tamped and leveled, and 125px thick planks are laid on it, and placed perpendicular to the wall when the length is 2m; When the length is greater than 3m, it is placed parallel to the wall.

2) when erecting a height of 25 50m, should be based on the site endurance design foundation practice or the use of backfill layered tamping to meet the requirements, can be used sleeper support, or on the foundation to pave 500px thick ballast, on which the concrete slab is laid, and then 12-16 channel steel is paved on the back.

3) When the erection height exceeds 50m, the calculation should be carried out and the foundation design method should be based on the ground endurance, or the gray soil foundation should be used at a depth of 1m under the ground, or the concrete foundation with a thickness of 50m should be poured, and the pillow support pad should be used on it.

2. The base of the fastener type steel pipe scaffold has two kinds of malleable cast iron manufacturing and welded base, and the wooden backing plate should be flattened when erected, the base should be placed, and then the vertical rod should be put into the base, and the vertical rod is not allowed to be placed directly on the wooden board, otherwise the stress state of the backing plate will be changed.

The test shows that the wooden backing plate (plate thickness 125px, plate length 5000px) is added under the standard base, which can increase the bearing capacity of the foundation soil by more than 5 times. When the plank length is greater than 2 spans, it will help to overcome the uneven settlement between the two poles.

3. When the vertical pole is not buried, the longitudinal and transverse sweeping rods are set at 500px from the ground. The practice of setting up the sweeping rod is the same as that of the large crossbar, and its function is to fix the bottom of the vertical rod, restrain the horizontal position of the vertical rod and the subsidence, and from the test, the bearing capacity of the scaffold without setting the sweeping rod also decreases.

4. When the wooden scaffold pole is buried, the sweeping rod can not be set. The burial depth is 30-1250px, the bottom of the pit should be tamped and the broken bricks should be tamped, and the backfill in the pit should be compacted in layers.

5. When the terrain of the scaffold foundation is low, it should be considered that there are no drainage measures around, and the mound should be left above the ground after the wooden scaffold pole is buried and backfilled to prevent water accumulation in the lower part.

Precautions. The connection between the scaffold and the building can not only prevent the inward or outward tilting accident caused by the wind load, but also serve as the intermediate constraint of the scaffold, reduce the calculated length of the vertical rod, improve the bearing capacity, and ensure the overall stability of the scaffolding.

The spacing of the connecting wall rods should generally be set according to the distance specified in the table. When the height of scaffolding erection is higher and the spacing of the connecting wall rods needs to be reduced, it is more effective to reduce the vertical spacing than to reduce the horizontal spacing, and from the scaffold load test, the bearing capacity of the connecting wall rods is increased by 7% when the connecting wall rods are set up according to two steps and three spans than those of three steps and two spans.

The connecting wall rod should be close to the node and set from the first large crossbar on the bottom floor.

The wall rod should be set close to the main node, and the distance from the main node should not be greater than 300mm.

What are the requirements for the outer scaffolding v40 meters high double poles, the spacing of the fasteners, and the fasteners used?

1. The load of the scaffold shall not exceed 270kg m2, and it can only be used after the experience is qualified and listed, and it should be checked and maintained frequently in use. 2. Set up meter fences on the outside of scaffolding, ramps and platforms. When laying bamboo rafts or planks, the two ends must be tied firmly, and it is strictly forbidden to put them into use without binding.

3. It is forbidden to directly erect the scaffold on the wooden flute of the floor slab and the structural part that has not calculated the additional load, or fix the scaffolding and scaffold board on the structure of the building that is not very firm.

4. The steel pipe column should be provided with a metal base, and the soft geological foundation should be padded with wooden planks or sweeping rods. 3. The scaffold pole should be vertical, the vertical deviation shall not exceed 1 200 in height, and the distance between the poles shall not exceed 2 meters. 5. Sharp knife braces and struts should be set at both ends of the scaffold, corners and every 6-7 columns, and when the height is more than 7 meters and cannot be set up, every 4 meters vertically and every 7 meters horizontally must be firmly connected with the building.

5. The scaffold crossbar at the passage and escalator should be heightened and reinforced, so as not to obstruct the passage. 7. The general crossbar step distance of the pick-up scaffold is meters, and the diagonal brace should be added, and the angle between the diagonal brace and the vertical plane is not more than 30°. 8. In order to prevent the bending fasteners of the shelf pipe from slipping off from the pipe head under compression, the intersecting ends of each rod are more than 10 cm.

9. If there is a power cord or electrical equipment at the scaffolding erection site, it must comply with the safety distance regulations, and take power transmission measures when erecting and dismantling. 10. When the scaffold is accepted, all parts should be visually inspected, and the acceptance and listing system should be implemented. 11. Before the scaffold is erected, the shelf pipe, fasteners, bamboo rows, and iron wires must be inspected, and the frame pipes are seriously bent, the fasteners are seriously corroded and cracked, and the bamboo rows are rotten and must be scrapped and not used.

In order to make the construction of the exterior wall smooth, scaffolding must be erected, so that it will be very convenient for workers to construct it. However, when the scaffolding is erected, it is also standardized, because this aspect is related to our safety. So we're going to pay attention to a lot of things.

Let's take a look at it with usExterior wall scaffolding erection specificationWhat are they?

1. What are the specifications for the erection of exterior wall scaffolding?

1. When erecting, the process flow of ordinary cantilever scaffolding erection is: very important, horizontal cantilever longitudinal sweeping rod vertical rod horizontal sweeping rod small crossbar large crossbar (joist) scissor brace wall piece paving scaffold tie protective railing tie safety net. Fixed-distance positioning.

According to the structural requirements, use a ruler at the four corners of the building to measure the distance between the inner and outer poles and the wall, and mark them; Straighten with a steel tape measure, separate the position of the pole, and use a small piece of bamboo to point out the pole mark; The backing plate must be laid flat and not suspended.

2. From the operational point of view, in the process of erecting the first layer of scaffolding, an oblique support is set up in each frame grid along the periphery, and the corners are increased in addition to both directions, and the scaffolding and the wall parts of the main structure can be removed after being reliably connected. When the cavity scaffold operating layer is two steps higher than the wall piece, it is advisable to stand the outer row first, and then the inner row. The following structure requires erection.

Second, the scaffolding erection steps.

1. First of all, the main pole foundation of the scaffold foundation of this project should be tamped after the backfill, and it is very important to use concrete with a strength grade of not less than C15 for hardening, and the concrete hardening thickness is not less than 10cm. The bearing capacity of the foundation can meet the erection requirements of the external scaffold (please refer to the scaffold calculation book for specific calculation data). Steel pipe floor scaffolding, the outer diameter of 48mm, wall thickness, steel strength grade Q235-A, the surface of the steel pipe should be straight and smooth, there should be no cracks, and the new steel pipe should have a factory certificate.

2. Then there is that the entrance steel pipe must be sampled before the construction of the scaffolding, and it is necessary to understand. Send to the test unit with relevant national qualifications to carry out mechanical tests such as bending and tensile resistance of steel pipes, and the test results can be used in construction only after the test results meet the design requirements. The erection of the steel pipe scaffold of this project uses malleable casting fasteners, which should meet the requirements of the Ministry of Construction's "Steel Pipe Scaffolding Fastener Standard" JGJ22-85, provided by the manufacturer with a fastener production license, sand hole and other forging defects, the specifications of the fasteners should match the steel pipe, the paste and surface should be dry and neat, and the minimum distance between the openings when clamping the steel pipe is not less than 5mm.

3. Finally, the tightening torque of the steel pipe bolt shall not be damaged when it reaches the time. It is necessary to understand clearly, such as when the old fasteners are used, the fasteners must be sampled and sent to the test unit with relevant national qualifications to carry out the fastener anti-slip force and other tests, and the test results can only be used in construction after meeting the design requirements. Before erecting the shelf, it should be maintained, rust removed and uniformly colored, and the color should strive to be beautiful.

The scaffolding poles, protective railings, and baseboards are all painted yellow, and the sweeping rods are all painted red and white.

When scaffolding is erected, it must be carried out in accordance with the specifications, so that the safety factor is relatively high.