Calculate hot-mix asphalt (HMA) tonnage for driveways, parking lots, overlays, and patches using industry-standard compacted density (145 lb/ft³ / 110 lbs per sq yd per inch).
| Material / Application | Standard Spec / Depth | Coverage / Weight | Field Note |
|---|---|---|---|
| 1.5" Finished Overlay (3,8 cm) | Lay 1.88" – 2.0" loose | 0.0091 tons / sq ft | Resurfacing over sound existing pavement |
| 2.0" Finished Surface (5,0 cm) | Lay 2.5" loose (+25%) | 0.0121 tons / sq ft (110 lb/sq yd) | Standard residential topcoat over gravel base |
| 3.0" Finished Driveway (7,5 cm) | Lay 3.75" loose (+25%) | 0.0181 tons / sq ft (165 lb/sq yd) | Full-depth residential driveway over 6–8" stone |
| 4.0" Heavy-Duty Pad (10,0 cm) | 2.5" binder + 1.5" surface | 0.0242 tons / sq ft (220 lb/sq yd) | RV pads, farm lanes, commercial parking lots |
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Paving contractors use two identical rules of thumb: (1) Hot-mix asphalt weighs 145 lbs per cubic foot compacted, or (2) 110 lbs per square yard per 1 inch of compacted depth. Always add 5–10% for subgrade irregularities and edges.
Loose hot-mix asphalt compacts by roughly 20% to 25% under a vibratory roller (about 1/4 inch per inch of thickness). To achieve a finished 3-inch compacted driveway, the paver screed must lay roughly 3.75 inches of loose mix.