Does comprehensive scaffolding include interior and full scaffolds: what comprehensive covers (masonry/finishing within 3.6 m), full scaffolding above 3.6 m, and anti-duplication rules (Hunan/Shaanxi/Jiangsu/railway calibers)

Topic Positioning

Answering the quota question "does comprehensive scaffolding include interior and full scaffolds": first the classification relation (both are single-purpose), then what comprehensive covers (masonry within 3.6 m, internal wall and ceiling finishing, etc.), how the above-3.6 m portion is charged (added sub-items / added full scaffolding), and anti-duplication points. Per Hunan 2025, Shaanxi's new quota, Jiangsu 2026, and railway TB/T 10831-2024 Vol. 10 calibers.

Core Conclusions

1. Classification and master principle: comprehensive vs single-purpose, "choose one". Scaffolding divides into comprehensive and single-purpose; interior and full scaffolds are single-purpose sub-items. Where floor area is computable, comprehensive applies; where unsuitable, single-purpose items may apply (Hunan 2025 Chapter 18; TB/T 10831-2024 Vol. 10 notes). Single-purpose suits single-storey buildings over 20 m eave height, industrial/warehouse/storey buildings, standalone exhibition halls, stadiums, theatres, auditoria, canteens, boiler rooms, roof frames over 3.60 m, structures, and separately tendered decoration; all other unit works take comprehensive (Jiangsu 2026).

2. What comprehensive covers — no interior-scaffold-type content within 3.6 m. Includes: (1) external masonry and external finishing scaffolds; (2) internal masonry within 3.6 m and internal wall and ceiling finishing scaffolds; (3) within the external safety-net enclosure — formwork, concreting, member erection, access ramps, hoist frames, loading platforms, safety protection; (4) scaffold costs for the building itself within the enclosure. Excludes: (1) protection unrelated to the building itself — pedestrian crossings over sidewalks, temporary outriggers, machinery screens; (2) scaffolds for roof frames and non-area mezzanines (Hunan Chapter 18 notes). Shaanxi: "comprehensive scaffolding covers external masonry and finishing, internal masonry and concreting within 3.6 m, and internal wall and ceiling finishing scaffolds; above 3.6 m the excess takes the corresponding sub-items, fractions of 1 m as 1 m." I.e., after charging by floor area, no interior items within 3.6 m; only above is charged.

3. Full scaffolding: added above 3.6 m for ceiling finishes. Where story height exceeds 3.60 m and ceilings need plastering, painting, or suspension, full scaffolding may be added without wall finishing scaffolds (TB/T 10831-2024 Vol. 10). Full scaffolding is computed on indoor net area (Hunan: horizontal projection actually erected, no deduction of attached columns) — 3.60-5.20 m = base layer; above 5.20 m each 1.20 m = one added layer; below 0.60 m = one layer x 0.50. Hunan's formula: layers = (story height - 5.2)/1.2, rounded. Railway sub-items: FY-440 (full scaffold, 3.6 < clear height <= 5.2 m), FY-441 (each +1.2 m), FY-442 (full steel-pipe falsework).

4. Anti-duplication. (1) Where full scaffolding is charged indoors, no decoration scaffold for internal walls — only a re-scaffolding fee on wall projection area (rate locally). (2) Works with comprehensive scaffolding must not re-take interior or wall-finishing scaffolds within 3.6 m. (3) Single-purpose items appear only where comprehensive is unsuitable, e.g.: trench walls and brick foundations with masonry over 1.20 m (area = length x height), walls within 3.60 m, parapets over 1.20 m, roof chimneys over 1.20 m — interior scaffolds; large equipment foundations (over 1.20 m above floor) — double-row external scaffolds (railway, Shaanxi). Shaanxi adds: internal brick/block walls over 8 m take double-row external sub-items.

Applicable Boundaries

Local/industry quotas differ in the 3.6 m boundary, the 5.2/1.2 layering, coefficients, and sub-item divisions: e.g., Jiangsu 2026 — above 3.60 m, frame column/beam/wall concreting scaffolds per single-purpose rules (internal brick walls beyond 3.6 m: single-row external x coefficient; block walls: double-row x 0.3; wall finishes beyond 3.6 m: the corresponding internal finishing sub-items); railway — concrete walls above 3.60 m indoors: single-row x 0.3; independent columns and single/continuous beams: double-row x 0.3; slabs: full scaffold x 0.30 — verify clause by clause against the project's current scaffolding chapter. Comprehensive scaffolding computes on floor area — inapplicable where no area is computable; oversized comprehensive scaffolds or integral lifting frames settle per special schemes (Hunan). Shaanxi's new quota is a draft; the official release may adjust. This card gives charging and anti-duplication calibers, not a substitute for local verification.

Further Reading

• TB/T 10831-2024 Vol. 10, volume notes "V. single-purpose scaffolds" "VI. quantity rules" and Section 4 scaffolding (FY-440-FY-442).
• Hunan 2025 Consumption Standard for Building and Decoration Works, Chapter 18 notes and rules (inclusions/exclusions; layer formula; re-scaffolding fee).
• Shaanxi new quota scaffolding part (coverage and "above 3.6 m add, below 1 m as 1 m").
• Jiangsu 2026 building and decoration quota scaffolding chapter (single-purpose applicability; comprehensive exclusions).