First, what are the safety requirements for erecting disc-lock scaffolding?
Building structural safety is always the primary goal in the construction process of any project, especially for public buildings, ensuring structural stability during earthquakes. The safety requirements for erecting disc-lock scaffolding include the following:
1. Erection must be carried out according to the approved plan and on-site instructions. Cutting corners is strictly prohibited. Erection techniques must be strictly followed, and deformed or corrected uprights must not be used as construction materials.
2. During erection, skilled technicians must be on-site to provide guidance, and a safety officer must be present to inspect and supervise.
3. Simultaneous work at different levels is strictly prohibited during erection. Effective measures must be taken to ensure the safe transfer and use of materials, accessories, and tools. Safety sentries should be placed at traffic intersections and above and below the work area, depending on the site conditions.
4. The construction load on the working level must meet design requirements. Overloading is prohibited, and formwork, reinforcing bars, and other materials must not be piled up on the scaffolding.
5. During the use of scaffolding, it is strictly forbidden to dismantle structural members without authorization. Dismantling must be approved by the technical supervisor, and remedial measures must be determined before implementation.
6. Scaffolding should maintain a safe distance from overhead power lines. The erection of temporary power lines on the construction site and the grounding and lightning protection measures for scaffolding should be implemented in accordance with the relevant provisions of the current industry standard “Technical Specification for Safety of Temporary Power Supply at Construction Sites” (JGJ46).
7. Regulations for working at height:
① Scaffolding erection and dismantling operations should be stopped in winds of level 6 or above, rain, snow, or heavy fog.
② Workers should use ladders to ascend and descend the scaffolding; climbing the supports is prohibited, and the use of tower cranes or cranes to lift personnel is strictly forbidden.
Second, what is the construction process of disc-lock scaffolding?
When installing and erecting disc-lock support frames, the uprights should be installed first, followed by the horizontal bars, and finally the diagonal bars, forming basic scaffolding units. These units are then expanded to form an overall support system. Construction Process: Foundation treatment → Surveying and layout → Install bases and adjust level → Install uprights, horizontal bars, and diagonal braces → Erect according to construction drawings → Install top supports → Adjust height → Lay main and secondary joists → Install protective measures → Install formwork → Inspection, acceptance, and record keeping.
Third, the key control points for the erection of disc-lock scaffolding are:
1. Correctly lay out the scaffolding according to the dimensions marked on the support frame configuration drawings. The erection range should be adjusted according to the design drawings or the client’s specifications, and should be corrected as the support frame is erected.
2. After the foundation is laid out, place the adjustable bases in the corresponding positions. Pay attention to the base plate during placement; materials with uneven base plates are strictly prohibited. The base wrench can be adjusted beforehand to a position approximately 250mm from the base plate for easy elevation adjustment during erection. Insert the main frame sleeve of the standard base upwards onto the adjustable base, ensuring the lower edge of the standard base is completely inserted into the groove of the wrench’s bearing surface. 1. Insert the horizontal bar casting head into the small hole of the disc, ensuring the front end of the casting head abuts against the main frame tube. Then, use a wedge to tighten and secure it through the small hole.
3. After erecting the ground-level bracing, level the entire scaffold to ensure it is on the same horizontal plane. The horizontal deviation of the horizontal bars should not exceed 5mm. The exposed length of the adjustable base’s adjusting screw should not exceed 300mm, and the height of the lowest horizontal bar (the ground-level bracing) from the ground should not exceed 550mm.
4. Arrange the vertical diagonal bracing according to the plan requirements. Based on specifications and the actual site conditions, the vertical diagonal bracing arrangement generally follows two forms: a matrix-type spiral (i.e., lattice column form) and a figure-eight symmetrical form (or a V-shaped symmetrical form). The specific implementation will depend on the plan.
5. Adjust and check the verticality of the scaffold as it is erected. The allowable deviation for verticality of each step (1.5m high) is ±5mm, and the allowable deviation for the overall verticality of the scaffold is ±50mm or H/1000mm (where H is the overall height of the scaffold).
6. The cantilever length of the adjustable support extending beyond the top horizontal bar or double-channel steel beam must not exceed 500mm, and the exposed length of the threaded rod must not exceed 400mm. The insertion length of the adjustable support into the upright or double-channel steel beam must not be less than 200mm.
7. Scaffolding support structures, such as column clamps and bracing, must meet the requirements of the plan.
Post time: Feb-02-2026