How many tons of asphalt fit in a dump truck?

Legally: 6–8 tons in a single axle, 13–15 in a tandem, 16–19 in a tri-axle, 19–26 in a quad or quint, 23–25 in a semi end dump and up to 26 in a super dump. The bed could physically hold more — the limit is axle weight law, not volume.

How many cubic yards of loose asphalt is a 15-ton load?

About 9.5 loose cubic yards — 15 tons ÷ 1.58 tons per loose cubic yard (117 lb/ft³). Rolled out, the same load becomes 7.7 compacted yards, or roughly 420 ft² at 3 inches. A tandem bed's 10–14 yd³ struck volume is deliberately larger than the legal payload requires.

Why does a tandem gross out before the bed is full?

Asphalt is heavy — 117 lb/ft³ even loose. A 14 yd³ tandem bed brimmed with hot mix would carry about 22 tons, blowing past the 13–15-ton legal payload by 50%. With dense materials, trucks always weigh out before they cube out; struck volume is only the constraint for mulch-class materials.

How long does hot mix stay workable in the truck?

Roughly 2–3 hours from load-out under normal conditions, less in cold or wind. Mix must arrive hot enough to finish compaction above cessation temperature (~175°F mat). Insulated bodies and tarps stretch the window; long hauls, small loads and thin lifts shrink it. Plan round trips accordingly.

What does an overweight ticket actually cost?

Fines commonly scale per pound over the limit and reach four to five figures for serious overloads, but the fine is the small part: the load may be grounded until legalized, the hauler's safety score takes the hit, and repeated violations follow the contractor's permits. Bridges are posted for a reason — overweight tickets on posted structures are treated most severely.

Should I order more small trucks or fewer big ones?

Match the truck to the site, then optimize count. Residential driveways often physically exclude tri-axles and end dumps — a tandem's shorter wheelbase wins. On open commercial work, bigger trucks cut per-ton haul cost, but only if the paver and site can absorb 25-ton deliveries. A stopped paver erases any hauling savings.

Asphalt · Hauling

Dump truck load capacity for asphalt

Trucking is where asphalt jobs are won or lost: the mix is perishable, the loads are heavy and the axle laws are unforgiving. Here is what each truck class legally hauls and how to sequence them.

13–15 t
Tandem dump legal payload: 80,000 lb
Federal gross vehicle weight cap: 2–3 hr
Workable window for hot mix: 25%
Loose fluff vs compacted volume

Contents

1.Payload by truck class
2.Legal limits, not bed size
3.Planning trucks for a pour
4.Keeping the paver moving

Payload by truck class

Legal payloads assume typical tare weights and US federal/state axle limits; individual states and permits move these a few tons.

Payload = legal gross vehicle weight minus tare. Loose hot mix at ~117 lb/ft³ means trucks weigh out long before beds are full.
Truck class	Legal payload	Struck volume & best use
Single-axle dump	6–8 US tons	~5 yd³ — patches, utility cuts, tight residential sites
Tandem-axle dump	13–15 US tons	~10–14 yd³ — the paving workhorse; fits most driveways
Tri-axle dump	16–19 US tons	~15–17 yd³ — commercial lots and highway lifts
Quad / quint axle	19–26 US tons	~17–22 yd³ — high-tonnage work where state law allows
End dump (semi trailer)	23–25 US tons	~20–25 yd³ — plant-to-site line hauls; needs room to tip
Super dump	up to 26 US tons	~26 yd³ — max payload under the bridge formula via trailing axle

Legal limits, not bed size

Planning trucks for a pour

Worked example: trucking a 60-ton pour

A 60-ton parking-lot lift, 30 minutes round trip plant-to-paver, tandems with 15-ton payloads. The crew places about 30 tons per hour.

1
Loads required
60 tons ÷ 15 tons/load = 4 tandem loads
2
Delivery interval the paver needs
15 tons ÷ 30 tons/hr = one load every 30 min
3
Trucks to sustain that interval
30 min round trip ÷ 30 min interval = 1 truck + 1 buffer = 2 trucks
4
Pour duration check
60 tons ÷ 30 tons/hr = 2 hr — well inside the 2–3 hr mix window

Result: Two tandems in rotation, four loads total, roughly a two-hour continuous pour.

The arithmetic generalizes: trucks needed = round-trip time ÷ delivery interval, plus one buffer truck. Get total tonnage from the weight calculator and stress-test the plan against traffic — a 30-minute round trip that becomes 45 at rush hour changes the truck count, not just the schedule.

Keeping the paver moving

Hauling questions

How many tons of asphalt fit in a dump truck?: Legally: 6–8 tons in a single axle, 13–15 in a tandem, 16–19 in a tri-axle, 19–26 in a quad or quint, 23–25 in a semi end dump and up to 26 in a super dump. The bed could physically hold more — the limit is axle weight law, not volume.
How many cubic yards of loose asphalt is a 15-ton load?: About 9.5 loose cubic yards — 15 tons ÷ 1.58 tons per loose cubic yard (117 lb/ft³). Rolled out, the same load becomes 7.7 compacted yards, or roughly 420 ft² at 3 inches. A tandem bed's 10–14 yd³ struck volume is deliberately larger than the legal payload requires.
Why does a tandem gross out before the bed is full?: Asphalt is heavy — 117 lb/ft³ even loose. A 14 yd³ tandem bed brimmed with hot mix would carry about 22 tons, blowing past the 13–15-ton legal payload by 50%. With dense materials, trucks always weigh out before they cube out; struck volume is only the constraint for mulch-class materials.
How long does hot mix stay workable in the truck?: Roughly 2–3 hours from load-out under normal conditions, less in cold or wind. Mix must arrive hot enough to finish compaction above cessation temperature (~175°F mat). Insulated bodies and tarps stretch the window; long hauls, small loads and thin lifts shrink it. Plan round trips accordingly.
What does an overweight ticket actually cost?: Fines commonly scale per pound over the limit and reach four to five figures for serious overloads, but the fine is the small part: the load may be grounded until legalized, the hauler's safety score takes the hit, and repeated violations follow the contractor's permits. Bridges are posted for a reason — overweight tickets on posted structures are treated most severely.
Should I order more small trucks or fewer big ones?: Match the truck to the site, then optimize count. Residential driveways often physically exclude tri-axles and end dumps — a tandem's shorter wheelbase wins. On open commercial work, bigger trucks cut per-ton haul cost, but only if the paver and site can absorb 25-ton deliveries. A stopped paver erases any hauling savings.

Sources & references

[1]Federal Bridge Formula & Truck Size and Weight Limits (23 CFR 658) — FHWA, US DOT, 2019
[2]MS-4: The Asphalt Handbook, 7th ed. — Asphalt Institute, 2007