Subgrade preparation and proof roll
$0.12 / SF
Subgrade preparation and proof roll costs about $0.12 per square foot installed. This is a published starting point and varies by region and job.
EW-038 · MasterFormat 31 23 23 · SF
What’s in this rate
This unit covers Subgrade preparation and proof roll, measured per square foot. The crew scarifies, moisture-conditions, and recompacts the subgrade and proof-rolls it with a loaded truck, marking soft spots. The rate covers the listed material, labor, and small tools. Soft-spot repair, over-excavation, fine grading, and testing stay on their own units.
Includes
- scarify and recompact top 8–12 in
- proof roll with loaded tandem truck
- mark soft areas
- operator and laborer time and equipment listed in the build-up
- stated material waste and small tools
Excludes
- soft-spot undercut and replacement
- over-excavation
- geotech observation / testing
- tax / freight beyond the stated delivered material prices
- after-hours, premium access, and contaminated / hazardous soil handling
- geotechnical testing, surveying / staking, and permits
Build-up
- Operator, 0.00055 hr × $53.00
- $0.03
- Laborer, 0.0002 hr × $41.00
- $0.01
- sourced water (utility volumetric)
- utility volumetric $0.11/CY · 0.0007
- Material and small tools
- $0.00
- Equipment, motor grader ~14 ft blade class, 0.0002 hr per unit
- $0.02
- Equipment, smooth-drum vibratory roller ~84 in class, 0.00025 hr per unit
- $0.02
- Equipment, water truck ~2,000–4,000 gal (driven by Operator), 0.0001 hr per unit
- $0.01
- Equipment, tandem/tri-axle dump truck hire, driver included, 0.00008 hr per unit
- $0.01
- Direct rate (labor, material, equipment, and tools)
- $0.10 / SF
- Overhead 10% of direct
- $0.01
- Fee 10% of (direct and overhead)
- $0.01
- Loaded rate
- $0.12 / SF
Worked extension: 1,000 SF of commercial subgrade preparation and proof roll × $0.12 = $120.00 loaded for 1,000 SF. Quantity is a worked extension.
Related rates
- Structural fill, 6 in lifts — $4.78 / CY
- Rough grading, dozer (large area) — $0.05 / SF
- Common fill, place and compact, 18 in lifts — $1.73 / CY
- Common fill, place and compact, 12 in lifts — $2.08 / CY
- Fine grading, motor grader (large area) — $0.12 / SF
- Structural fill, 12 in lifts — $2.84 / CY
- Dozer cut to fill, 100 ft push — $1.56 / CY
- Structural fill, place and compact, 10 in lifts — $3.25 / CY
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