Safety regulations for scaffolding erection vary by type, mainly including floor-standing scaffolding, attached lifting scaffolding, cantilever scaffolding and portal steel pipe scaffolding.
1. Floor-standing Scaffolding
The foundation must be flat and solid without water accumulation, with drainage ditches or other drainage measures set outside and around the scaffolding. The foundation shall have sufficient bearing capacity, and the pole base plates shall meet load-bearing requirements, with the base bottom 50～100mm above the natural ground.
2. Attached Lifting Scaffolding
Four core devices must be checked during installation: full-automatic anti-fall device, anti-overturning device, synchronization or load control device, ensuring their technical performance meets specifications.
The bottom working surface shall be fully paved with scaffold planks without gaps, overhanging planks or loose planks. A horizontal safety net shall be erected under the scaffolding, or bamboo plywood shall be used for sealing under the planks.
Starting from the bottom, openable flap plates shall be set between the scaffolding and the structure every two floors to ensure vertical protection and prevent small objects from falling and causing injury.
3. Cantilever Scaffolding
It relies on cantilever beams at the building edge to transfer all or part of the scaffolding load to the building structure, and is reliably connected to the building through tie rods.
I-beam or channel steel of 16# and above shall be used as the cantilever foundation; deformed steel bar is strictly prohibited. For 16# I-beam, a steel bar with diameter ≥25mm shall be welded 100mm from the front end to fix the vertical pole (prevent displacement).
Full welding (spot welding is not allowed) is required to ensure welding quality, and the steel bar shall be 200mm higher than the top surface of the I-beam. In addition, the I-beam surface must be fully painted with yellow anti-rust paint.
4. Portal Steel Pipe Scaffolding
It must comply with the current industry standard JGJ 128 "Safety Technical Specification for Portal Steel Pipe Scaffolding in Construction".
Main components include welded vertical poles, horizontal poles and reinforcement poles. The foundation shall be flat, solid and equipped with drainage measures, with base plates and pole bases at the bottom.
Ground support poles and other components must meet relevant specifications. The angle between the diagonal brace and the ground shall be 45°～60°, fixed on the vertical pole with rotating fasteners. The setting of scissors braces and transverse diagonal braces is also crucial, and the verticality deviation of portal poles shall meet specifications.
Post time: 2026-05-11 09:15:55