Pricing pavement removal: selection criteria between milling and demolition sub-items, with corresponding Beijing DB11/T 2382-2024 Appendix D municipal sub-items and consumptions

Topic Positioning

The core branching question of road removal and maintenance-modification pricing: should pavement removal apply "milling" or "demolition" sub-items? This card gives the selection boundary and application points, and lists the corresponding milling/demolition sub-item numbers, units, and consumptions in Beijing's DB11/T 2382-2024 Appendix D municipal "demolition works".

Core Conclusions

1. Selection principle: milling vs demolition is not either-or; branch by construction essence

Construction essence	Sub-item applied	Criterion (quota work content)
Asphalt course shaving (maintenance/overlay, milling machine, milled material loaded and recycled)	Milling sub-items	"milling, loading, site cleanup, etc."
Wholesale pavement excavation (structure abolition, pipeline trenching, rebuilding clearance; breaker/pick/excavator)	Demolition sub-items	"demolition, clearing, piling old material, etc."
Full-depth cement-concrete pavement removal	Demolition sub-items (milling group has no full-depth tier)	-
Pre-overlay surface texturing (asphalt or concrete pavement)	Milling - texturing sub-items	"milling, loading, site cleanup, etc."

Three criteria, all indispensable: (1) material — asphalt can be milled, cement concrete can only be broken (texturing excepted); (2) depth — surface shaving only applies milling; full depth or including base applies demolition; (3) the actual process must match the approved construction scheme (the first check in settlement review).

2. Beijing 2024 milling group sub-items (unit: 100 m2, plus 2% other tools)

• D1-6-14 mill asphalt-concrete pavement, within 3 cm thick: composite labor class III 0.4250 workdays; pavement mill 0.0395 shifts; 5 t dump truck 0.0395 + 0.0700 shifts.
• D1-6-15 mill asphalt-concrete pavement, each additional 1 cm: labor 0.0260; mill 0.0080; 5 t dump 0.0080.
• D1-6-16 mill asphalt-concrete pavement, within 3 cm (another tier): labor 0.5610; mill 0.1450; 5 t dump 0.1450 + 0.0900.
• D1-6-17 each additional 1 cm (another tier): labor 0.0390; mill 0.0240; 5 t dump 0.0240.
• D1-6-18 mill pavement, texturing within 1 cm (asphalt concrete): labor 0.3670; mill 0.0198; 5 t dump 0.0500.
• D1-6-19 mill pavement, texturing within 1 cm (concrete): labor 0.5180; mill 0.0625; 5 t dump 0.0500.

Note: D1-6-14/15 and D1-6-16/17 share names but differ in consumption (two tiers in the standard); verify the applicable tier against the original tables.

3. Beijing 2024 demolition group sub-items

Pneumatic-pick type (unit: 10 m2, plus 2% other tools):

• D1-6-1 pick-demolish asphalt-concrete surface, 10 cm: labor class III 0.3020; pick 0.1300 shifts; 6 m3/min electric compressor 0.0650 shifts.
• D1-6-2 pick-demolish asphalt surface, each +/-1 cm: 0.0290; pick 0.0130; compressor 0.0070.
• D1-6-3 pick-demolish cement-concrete surface (unreinforced), 15 cm: 0.6740; pick 0.3100; compressor 0.1530.
• D1-6-5 pick-demolish cement-concrete surface (reinforced), 15 cm: 1.0460; pick 0.4820; compressor 0.2410.
• D1-6-8 pick-demolish inorganic-mixture base, 15 cm: 0.5190; pick 0.1495; compressor 0.0748.

Mechanical type (unit: 100 m2):

• D1-6-10 machine-demolish asphalt surface and inorganic base, within 15 cm: labor 0.4850; crawler hydraulic excavator 0.1670 shifts; other tools 2%.
• D1-6-11 each additional 5 cm: 0.0320; excavator 0.0100.
• D1-6-26 machine-demolish cement-concrete surface (unreinforced), within 15 cm: 0.7380; excavator 0.2200.

(Other thickness tiers and reinforced/unreinforced counterparts per the original tables.)

4. Application points

1. Depth stacking: milling = "within 3 cm" base tier + "each additional 1 cm" tier (stack once per extra cm); demolition = base thickness tier + adjustment tier (asphalt pick "each +/-1 cm"; D1-6-11 mechanical "each additional 5 cm").
2. Loading/haul caliber differences (prevent both double-counting and omission): milling sub-items' work content already includes "loading" — milled material must not be charged loading again; only the haul (distance) is added per the standard's haul rules. Demolition only "piles old material" — loading and haul must be counted separately.
3. Mutual exclusion: for the same position and course, milling and demolition must not both apply; the "texturing" tier and milling tiers are not double-counted.
4. Quantity calibers: demolition of pavement surface and base courses (including cushions) is computed by area of the demolished part; curb demolition by length; brick-stone and concrete structures by volume; waste haul follows the standard's relevant provisions.
5. Typical combinations: mill 5 cm asphalt = D1-6-14 (within 3 cm) + D1-6-15 x2 (each additional 1 cm) + muck haul; break 15 cm full-depth cement concrete = D1-6-26 + loading and haul counted separately; wholesale removal of asphalt + inorganic base = D1-6-10 + D1-6-11 adjustment tier.

Applicable Boundaries

• Sub-item numbers and consumptions are per Beijing's DB11/T 2382-2024 (current); where the contract adopts other versions or other provinces' pricing standards, sub-item numbers, consumptions, and adjustment rules must be re-verified.
• Consumptions are quota pricing consumptions (including labor differential allowances etc.) and must not be used directly as physical quantities; quota quantities and BOQ measurement calibers are managed separately.
• The milling tiers do not apply to full-depth cement-concrete removal; the texturing tier only applies to within-1 cm surface treatment; selection must also match the actual process and approved scheme.
• The applicable conditions of the D1-6-14/15 vs D1-6-16/17 tiers follow the original tables and volume notes.

Further Reading

• DB11/T 2382-2024 Appendix D municipal works - demolition works: milling group D1-6-14-D1-6-19; demolition group D1-6-1-D1-6-11, D1-6-26 and adjustment tiers.
• Same standard, text 8.6 "demolition works" (8.6.1-8.6.5): measurement rules (area/length/volume) and waste-haul linkage.
• Companion rules: work-content composition judgment ("unlisted not counted separately, auxiliary necessarily included, processes not split"); match sub-items by "item characteristics + work content" before applying; mutually exclusive items take one only — prevent duplicate pricing.