First, Design Compliance and Material Control of Disc-lock Scaffolding.
1. Construction Basis
- Strict adherence to the specific construction plan (including load calculations and detailed node drawings) and technical briefing documents is mandatory. The plan must be reviewed by experts (height ≥ 8m or span ≥ 18m).
- Alternative plans or empiricist construction are prohibited, especially simplifying structural measures to expedite completion.
2. Material Prohibitions
- Components with bending deformation > 1/1000 of the pole length or local dents ≥ 5mm must be scrapped;
- Repaired components are only permitted for non-load-bearing structures (such as guardrails) and are strictly prohibited from being used in the main load-bearing system.
Second, Personnel Qualifications and Process Supervision Mechanism for Disc-lock Scaffolding
1. Dual-Post Responsibility System
- Erection work must be carried out by certified scaffolders (special operation qualification in construction) and must be conducted under the on-site supervision of a dedicated safety officer;
- The supervision unit must conduct parallel inspections of key nodes (such as foundation acceptance and wall tie installation) and retain video records.
Third, Risk Classification and Control of Working Surfaces for Disc-lock Scaffolding
1. Prohibition of Cross-operation
- Vertical working surface spacing ≥ 10m (JGJ/T 231, Clause 8.0.8), otherwise a rigid isolation layer (such as double-layer wooden boards + steel mesh) must be installed;
2. Material Transfer Standards
- Tools and accessories must be transferred using fall-proof turnover boxes + tow ropes; throwing is prohibited.
- Protective canopies (inclination angle ≥ 45°, impact resistance ≥ 5kN/㎡) should be erected above traffic passages.
Fourth, Quantitative Management of Load Control for Disc-lock Scaffolding
1. Static Load Zoning
- Uniformly distributed load on the working level ≤3kN/㎡ (decoration construction) or ≤5kN/㎡ (structural construction); concentrated load ≤10kN;
2. No-Stacking Zones
- Reinforcing bars/formwork and other materials are strictly prohibited from being stacked on the working level. An independent material platform (such as a cantilevered steel platform) must be provided and physically isolated from the scaffolding structure.
Fifth, Principles for Ensuring the Structural Integrity of Disc-lock Scaffolding.
1. List of “Non-Removable Members.”
- Uprights, horizontal members, and diagonal members (especially vertical diagonal members) constitute a geometrically invariant system; any removal is considered a structural change.
2. Remedial Procedures
- If removal is absolutely necessary, a written permit must be issued by the project’s chief engineer, and equivalent replacement measures must be implemented simultaneously.
Post time: Jan-06-2026