Grading & Asphalt Paving Takeoff Services
Precision takeoff quantities for commercial parking facilities, private developments, and highway sitework. We accurately calculate square yards, asphalt tonnage, crushed aggregate base, curb linear footage, and concrete flatwork.
Division 32 Scope Itemization
- Asphalt Paving: Light vs. Heavy-duty sections (SY and Tonnage)
- Aggregate Base Course: 6", 8", 10", 12" graded stone (Tons / CY)
- Concrete Curbs & Gutters: Type A/B/D, mountable, spill curbs (LF)
- Concrete Flatwork: Sidewalks, trash dumpster pads, ADA ramps (SF)
- Subgrade Prep: Fine grading SY, proof rolling, stabilization fabric
Direct Technical Summary: What Is a Grading, Paving, and Curb Takeoff?
A grading, paving, and curb takeoff is the engineering quantification of all exterior horizontal improvements classified under CSI MasterFormat Division 32. This includes subgrade fine grading (SY), crushed aggregate base courses (ABC/DGA quantified in tons and compacted CY), hot mix asphalt courses (HMA surface and binder quantified in SY and tons via AASHTO 112 lbs/sy-in density rules), concrete curbs and gutters (LF by profile type), and pedestrian concrete flatwork (SF and CY). High-precision takeoffs segregate light-duty passenger vehicle zones from heavy-duty truck freight corridors.
Why Pavement Section Segregation Dictates Bidding Profitability
The single most common mistake made by commercial paving estimators is calculating site pavement as a single uniform cross-section. Modern commercial developments, retail distribution centers, and industrial logistics parks divide surface parking into distinct engineering zones:
- Light-Duty Pavement (Standard Car Stalls): Typically engineered with a 2.0" asphalt wearing surface over a 6.0" crushed aggregate base course, designed for passenger vehicles with minimal wheel axle loads.
- Heavy-Duty Pavement (Truck Lanes & Fire Corridors): Typically engineered with a 2.0" surface wearing course, a 2.5" to 3.0" asphalt binder/intermediate course, and an 8.0" to 12.0" crushed aggregate base, designed for repetitive semi-truck loads (AASHTO ESAL ratings).
- Heavy Concrete Aprons (Loading Docks & Dumpsters): 7" to 9" heavy-duty reinforced 4,000 PSI concrete slabs with #4 or #5 rebar mats over 6" to 8" compacted stone to resist asphalt rutting caused by parked trailer landing gear.
Failing to independently vectorize and quantify these zones leads directly to massive material shortages in asphalt binder and base stone, or severe bid overpricing that loses competitive tenders.
Complete Division 32 Scope Itemization
Our takeoff models capture every component required to construct and pave exterior site improvements:
1. Subgrade Preparation & Fine Grading (CSI 32 11 13)
Quantified in Square Yards (SY) across all paved, curb, and sidewalk areas. Includes fine grading with laser-guided motor graders, proof-rolling with loaded tandem dump trucks to detect pumping subgrade, lime or Portland cement soil stabilization (SY and tons), and non-woven or woven geotextile subgrade stabilization fabric (SY with 10% overlap allowance).
2. Aggregate Base Courses (CSI 32 11 23)
Crushed Aggregate Base (CAB), Dense Graded Aggregate (DGA), Crusher Run (#21A / #21B), and open-graded stone. Modeled by layer thickness (4", 6", 8", 10", 12"), calculated in compacted cubic yards (CCY), and converted to purchasing tons using project-specific proctor density factors (135 to 145 lbs/CF).
3. Asphalt Pavement Systems (CSI 32 12 16)
Surface wearing courses (Superpave 9.5mm / 12.5mm), intermediate binder courses (Superpave 19.0mm / 25.0mm), and base asphalt. Quantified in Square Yards (SY) and plant purchasing Tonnage (TN). Includes emulsified asphalt tack coat (SS-1h / CSS-1h) in Gallons (GAL) and prime coat over crushed stone base.
4. Concrete Curbs, Gutters & Flatwork (CSI 32 16 13)
Continuous cast-in-place and slipformed concrete curbs (6" vertical curb, 24" curb and gutter, 30" valley gutter, roll curb, header curb) in Linear Feet (LF). Concrete sidewalks (4" standard and 6" vehicular reinforced), dumpster enclosure pads with reinforced aprons (SF and CY), and ADA truncated dome detectable warning pavers (EA).
Engineering Density Formulas & Conversion Calculations
Converting plan square yards into asphalt plant ordering tons requires standard AASHTO/ASTM weight equations. Here is the exact calculation methodology incorporated into our spreadsheets:
Asphalt & Base Conversion Standards:
• Light-Duty Parking: 10,000 SY with 2.0" Asphalt Surface over 6" Crushed Aggregate Base.
• Asphalt Surface: [10,000 × 2.0 × 112] ÷ 2,000 = 1,120 Tons HMA Surface.
• Stone Base: [10,000 × (6/36) × 27 × 140] ÷ 2,000 = 3,150 Tons Base Stone.
• Heavy-Duty Truck Route: 4,500 SY with 2.0" Surface + 2.5" Binder over 10" Stone Base.
• Asphalt Surface: [4,500 × 2.0 × 112] ÷ 2,000 = 504 Tons Surface.
• Asphalt Binder: [4,500 × 2.5 × 115] ÷ 2,000 = 646.9 Tons Binder.
• Stone Base: [4,500 × (10/36) × 27 × 140] ÷ 2,000 = 2,362.5 Tons Base Stone.
• Total Site Paving Requirements: 1,624 Tons Surface, 646.9 Tons Binder, 5,512.5 Tons Stone Base, and 1,015 Gallons Tack Coat.
QA/QC Protocols for Paving & Curb Takeoffs
To prevent contractor losses from material waste or underestimated quantities, our team enforces a 4-tier review protocol:
- Boundary Polygon Verification: Every paving polygon is snapped to civil curb faces and building foundation walls. We ensure curb widths (typically 6" to 24") are deducted from paving square yardage so asphalt isn't double-counted inside curb footprints.
- Curb Ledge Subbase Inclusion: Concrete slipform pavers require aggregate base extending 6" to 12" behind the back of the curb. We verify that stone base yardage includes this perimeter ledge to prevent crushed aggregate shortages on site.
- Elevation Flowline Inspection: We review grading spot elevations at gutter flowlines, catch basins, and handicap access ramps to ensure ADA compliance (maximum 2.0% cross slope and 8.33% ramp slope), flagging potential drainage traps.
- Sawcut & Milling Transition Auditing: On remodel or widening projects, our estimators verify that tie-in seams specify cold milling keyways (butt joints) and linear feet of full-depth asphalt sawcutting.
What Is Included in Division 32 Paving Deliverables
- Paving Area & Tonnage Schedule: Tabulated Excel spreadsheet broken out by heavy-duty pavement, standard parking, concrete truck aprons, porous asphalt, and overlay areas.
- Crushed Aggregate Subbase Quantities: Quantified in both square yards and compacted tons, with compaction loss factors clearly documented.
- Linear Curb & Gutter Schedule: Exact linear footage separated by curb height and profile (6" vertical curb, 24" combination curb & gutter, 18" ribbon header curb, mountable spill curbs).
- Pedestrian Concrete Flatwork: 4" standard sidewalks, 6" reinforced vehicular crossings, detectable warning surface tiles (ADA truncated domes), and heavy trash enclosure pads with grade beams.
- Marked-Up Paving Plan (PDF): Color-coded vector plans clearly designating light-duty vs heavy-duty sections, curb types, sidewalk layouts, and transition sawcut lines.
Paving & Subgrade Takeoff Specifications & Quality Control Matrix
| Takeoff Parameter | Standard Service Specification |
|---|---|
| Measurement Units | Square Yards (SY fine grading & paving surface), Tons (TN hot mix asphalt binder & wearing courses, crushed aggregate base), Linear Feet (LF curbs), Each (EA ADA truncated dome pads). |
| Drawings Reviewed | Civil Grading (C200), Dimensioning (C150), Paving & Striping Plans (C400), and Pavement Section Details (C500). |
| Specification Alignment | CSI MasterFormat Division 32 11 23 (Aggregate Base Courses) & 32 12 16 (Asphalt Paving). |
| Revisions & Addenda | Pavement section revisions (e.g., thickness alterations from 2.5" to 3.0" or stone base depth modifications) tracked with instant delta tonnage updates. |
| QA/QC Review Protocol | Two-tier estimator audit verifying density conversions (standard 112 lbs/sy-in for asphalt, 135–145 lbs/cf for compacted dense-graded stone), curb unpaver offsets, and perimeter sawcut seams. |
| Standard Exclusions | Permanent traffic signaling electronics, pavement markings and thermoplastic striping (unless requested), and geotechnical core drilling verification. |
Five Common Paving Bidding Mistakes We Help You Avoid
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