(1) When calculating interior and exterior wall scaffolding, do not deduct the area occupied by doors, windows, openings, void openings, etc.
(2) If the height varies across different sections of the same building, calculations shall 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 be executed using the main structural construction scaffolding, the main structural exterior scaffolding or decorative exterior scaffolding items can be calculated separately.
II. Exterior Scaffolding
(1) The height of building 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 periphery of the exterior wall (including projections like wall piers wider than 240mm, which are calculated based on their shown dimensions and added to the exterior wall length) by the height.
(2) When the masonry height is below 15m, calculate using single-row scaffolding. When the height is 15m or above, or although less than 15m, if the area of exterior wall doors, windows, and decoration exceeds 60% of the exterior wall surface area (or if the exterior wall is a cast-in-place concrete wall or lightweight block wall), calculate using double-row scaffolding. When the building height exceeds 30m, steel cantilevered platform double-row scaffolding may be calculated based on project specifics.
(3) For independent columns (cast-in-place concrete frame columns), calculate the area in square meters by multiplying the outer perimeter of the column cross-section plus 3.6m by the designed column height, and apply the item for single-row exterior scaffolding. For cast-in-place concrete beams and walls, calculate the area in square meters by multiplying the height from the designed outdoor ground level or the top surface of the floor slab to the bottom of the slab above by the net length of the beam or wall, and apply the item for double-row exterior scaffolding.
(4) For steel platform outrigger tube scaffolding, calculate the area in square meters by multiplying the length of the building's outer periphery by the designed height. The platform overhang width is comprehensively determined in the quota; apply the relevant quota item based on the set height during use.
III. Interior Scaffolding
(1) For building interior wall scaffolding, when the height from the designed interior floor level to the bottom surface of the roof slab (or half the height of the gable wall) is less than 3.6m (for non-lightweight block walls), calculate using single-row interior scaffolding. When the height exceeds 3.6m but is less than 6m, calculate using double-row interior scaffolding.
(2) Interior scaffolding is calculated based on the vertical projected area of the wall surface, applying the interior scaffolding items. For various lightweight block walls where scaffolding holes cannot be left, apply the double-row interior scaffolding item.
IV. Decorative Scaffolding
(1) For interior wall decoration where the height exceeds 3.6m and the original masonry scaffolding cannot be utilized, decorative scaffolding can be calculated according to the rules for interior scaffolding. Decorative scaffolding is calculated as double-row interior scaffolding multiplied by a coefficient of 0.3.
(2) When the decorated surface of an interior ceiling is more than 3.6m above the designed interior floor level, full hall scaffolding may be calculated. Full hall scaffolding is calculated based on the net indoor floor area. For heights between 3.61m and 5.2m, calculate the basic layer. For heights exceeding 5.2m, calculate one additional layer for every 1.2m increase, disregarding increments less than 0.6m. Calculate the number of additional layers using the following formula: Number of Full Hall Scaffolding Additional Layers = [Indoor Clear Height - 5.2 (m)] / 1.2 (m)
(3) If the main structural scaffolding cannot be used for exterior wall decoration, exterior wall decorative scaffolding can be calculated. Exterior wall decorative scaffolding is calculated based on the designed exterior wall decorative area, applying the corresponding quota items. Scaffolding is not calculated for exterior wall brushing or painting.
(4) After calculating the full hall scaffolding according to the rules, interior wall decoration work shall not have scaffolding calculated again.
V. Other Scaffolding
(1) Perimeter wall scaffolding is calculated in square meters by multiplying the masonry height (from the natural ground level to the top of the wall) by the length, applying the corresponding item for single-row interior scaffolding.
(2) For stone masonry walls where the masonry height exceeds 1.0m, calculate the area in square meters by multiplying the designed masonry height by the length, applying the item for double-row interior scaffolding.
(3) Horizontal protective scaffolding is calculated in square meters based on the actual horizontal projected area laid.
(4) Vertical protective scaffolding is calculated in square meters by multiplying the erection height (from the natural ground level to the topmost horizontal bar) by the actual erected length.
(5) Cantilevered scaffolding is calculated in linear meters based on the erected length and number of layers.
(6) Suspended scaffolding is calculated in square meters based on the erected horizontal projected area.
(7) Chimney scaffolding is calculated per unit based on different erection heights. For concrete chimneys or water towers constructed using the slip-form method, scaffolding is not calculated separately.
(8) Elevator shaft scaffolding is calculated per single shaft.
(9) Inclined access ways/ramps are calculated per unit based on different heights.
(10) Water tower scaffolding, whether single-drum or multi-drum, is calculated in square meters by multiplying the outer perimeter of the single drum by the height from the designed outdoor ground level to the top of the tower, applying the item for double-row exterior scaffolding.
(11) Water (Oil) Tank scaffolding is calculated in square meters by multiplying the outer perimeter of the tank by the height from the outdoor ground level to the top of the tank. If the tank is more than 1.2m above the ground level, apply the item for double-row exterior scaffolding.
(12) Equipment foundation scaffolding is calculated in square meters by multiplying its outer perimeter by the height from the ground level to the top outer edge, applying the item for double-row interior scaffolding.
(13) The quantity for building vertical enclosure is calculated based on the vertical projected area of the enclosed surface.
(14) Vertically hung safety netting is calculated in square meters by multiplying the actual length of the net by its actual height.
(15) Cantilevered safety netting is calculated based on its horizontal projected area.
Post time: 2025-12-31 13:51:14