Calculate asphalt paving tonnage, square yards, and tri-axle truckloads for driveways, roadways, and parking lots.
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An asphalt calculator estimates the total tonnage of Hot Mix Asphalt (HMA) required to pave driveways, parking lots, and roadways. It computes compacted density at approximately 110 to 115 lbs per square yard per inch of thickness.
\text{Tons} = \frac{\text{Sq Yds} \times \text{Depth (in)} \times 112}{2000} \times 1.05Compact Hot Mix Asphalt weighs approximately 112 lbs per square yard per inch of depth (equivalent to 145 lbs/cu ft or 2.0 tons/cu yd). A 5% roller compaction and waste allowance is included.
Scenario: Paving a 60 ft by 20 ft driveway with 2.5 inches of compacted asphalt surface course.
Square footage: 60 × 20 = 1,200 sq ft.
Square yards: 1,200 ÷ 9 = 133.33 sq yds.
Poundage: 133.33 × 2.5 in × 112 lbs/sq yd/in = 37,333 lbs.
Tonnage with 5% waste: (37,333 ÷ 2000) × 1.05 = 19.60 US tons.
Residential asphalt driveways typically have 2.5 to 3 inches of compacted Hot Mix Asphalt (applied as 3 to 3.5 inches loose before rolling) over a 6-inch compacted crushed stone base.
At a standard 2-inch compacted depth, one ton of asphalt covers approximately 80 to 85 square feet. At a 3-inch depth, one ton covers about 55 to 60 square feet.
A standard tri-axle asphalt dump truck hauls approximately 20 to 22 tons of hot mix asphalt per trip.
The industry standard rule of thumb is 110 to 115 pounds per square yard per inch of compacted depth.
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= 14.81 Metric Tonnes (7.72 cu yds)