1.When calculating interior and exterior wall scaffolding, the area occupied by openings such as doors, windows, and voids does not need to be deducted.
2.For buildings with varying heights, calculations must be performed separately for each height.
3.If the general contractor’s scope of work does not include exterior wall decoration, or if the exterior wall decoration cannot utilize the main construction scaffolding, the main exterior scaffolding or decorative exterior scaffolding items may be applied separately.
II. Exterior Scaffolding
1.The height of exterior wall scaffolding is measured from the designed outdoor ground level to the eave (or the top of the parapet wall). The quantity is calculated in square meters by multiplying the length of the outer edge of the exterior wall (including wall piers protruding more than 240 mm from the wall surface, calculated based on the dimensions shown in the drawings and incorporated into the exterior wall length) by the height.
2.For masonry heights below 15 m, single-row scaffolding is used. For heights exceeding 15 m, or for heights less than 15 m where the area of exterior wall doors, windows, and decoration exceeds 60% of the exterior wall surface area (or where the exterior wall is cast-in-place concrete or lightweight block walls), double-row scaffolding is used. For building heights exceeding 30 m, steel cantilevered platform double-row scaffolding may be used based on project conditions.
3.For independent columns (cast-in-place concrete frame columns), the calculation is based on the perimeter of the column’s outer structure as shown in the drawings plus 3.6 m, multiplied by the designed column height in square meters, applying the single-row exterior scaffolding item. For cast-in-place concrete beams and walls, the calculation is based on the height from the designed outdoor ground level or the upper surface of the floor slab to the bottom of the floor slab, multiplied by the net length of the beam or wall in square meters, applying the double-row exterior scaffolding item.
4.For steel platform cantilevered steel tube scaffolding, the calculation is based on the length of the outer edge of the exterior wall multiplied by the designed height in square meters. The quota for the platform cantilever width has been comprehensively determined, and the height set in the quota item is applied during use.
III. Interior Scaffolding
1.For interior wall scaffolding in buildings, when the height from the designed indoor ground level to the bottom surface of the roof slab (or half the height of the gable wall) is less than 3.6 m (for non-lightweight block walls), single-row interior scaffolding is used. For heights exceeding 3.6 m but less than 6 m, double-row interior scaffolding is used.
2.Interior scaffolding is calculated based on the vertical projection area of the wall, applying the interior scaffolding item. For various lightweight block walls where scaffolding holes cannot be left, the double-row interior scaffolding item is applied.
Post time: 2025-10-28 10:26:07