1. Standard requirements for foundation acceptance: The foundation ground must be flat and firm, with no obvious settlement (allowable settlement ≤10mm) or cracks; the compaction coefficient of the backfilled soil foundation must be ≥0.94 (tested using the ring cutter method); the base plates must be wooden base plates (length ≥2 spans, thickness ≥50mm) or rigid base plates (such as channel steel), and the contact area with the foundation must be ≥0.15㎡.
2. Standard requirements for upright acceptance: Verticality deviation: ≤1/200 of the scaffold height (e.g., for a 20m scaffold, deviation ≤100mm); Joint connections: Butt couplers must be used (lap joints are strictly prohibited); adjacent upright joints must not be located within the same step; for two adjacent joints separated by one upright within the same step, the height direction must be staggered by ≥500mm, and the distance from the center of each joint to the main node must be ≤1/3 of the step distance.
3. Standard Requirements for Horizontal Bar Acceptance
Main Horizontal Bars: Installed inside the uprights, with a length ≥ 3 spans; butt joints should be staggered, and the joints of two adjacent main horizontal bars must not be located in the same span or at the same level. The distance from the center of the joint to the main node should be ≤ 1/3 of the span.
Small Horizontal Bars: Arranged close to the uprights, resting on the main horizontal bars, and secured with right-angle couplers; when using bamboo scaffolding boards, the spacing between small horizontal bars should be ≤ 400mm.
Step Spacing: ≤ 1.8m, longitudinal spacing ≤ 2m.
4. Standard Requirements for Coupler Acceptance
Material: Couplers should be made of malleable cast iron or cast steel, and their mechanical properties should comply with GB15831. Couplers with cracks, deformation, or stripped threads are strictly prohibited.
Tightening Torque: 40N・m～65N・m (must be checked on-site with a torque wrench).
5. Acceptance Standards for Wall Ties
Layout: Wall ties should be installed close to main nodes, with a distance ≤300mm from the main node;
Type: Rigid wall ties are preferred; when using flexible wall ties, top bracing is mandatory, and the tensile strength of the wire ropes must meet design requirements.
Quantity: The quantity must not be less than the design quantity. For scaffolding heights below 24m, wall ties should be installed in 3-step, 3-span configurations.
6. Acceptance Standards for Scissor Bracing
Layout: Continuously installed along the entire height of the outer side of the scaffolding, with a width ≥4 spans (or ≥6m);
Angle: The angle between the diagonal brace and the ground should preferably be between 45° and 60°;
Extension: Overlapping is used, with an overlap length ≥1m, and three swivel couplers should be installed at equal intervals for fixation. The distance from the edge of the end coupler cover plate to the end of the rod should be≥100mm.
7. Standard requirements for scaffold board acceptance:
Material: Rotten, broken, or deformed scaffold boards are prohibited; bamboo scaffold boards should be made of moso bamboo or nan bamboo, with a thickness of≥50mm; steel scaffold boards should be made of Q235 steel, and the surface should have an anti-slip texture.
Fixing: Bamboo scaffold boards should be laid with the main bamboo ribs perpendicular to the longitudinal horizontal bars, laid flat and butt-jointed, and the four corners should be fixed to the longitudinal horizontal bars with galvanized steel wire with a diameter ≥1.2mm; steel scaffold boards should be hooked to the transverse horizontal bars or fixed with bolts.
Post time: Nov-05-2025