Question 1

How many truck loads of gravel do I need?

Accepted Answer

Divide total gravel weight by your truck's payload capacity, then round up to the nearest whole trip. Example: 36 tonnes of gravel at 10 tonnes payload per truck = 3.6 → rounds up to 4 trips. Gravel delivery is weight-limited, not volume-limited, because dense aggregate fills weight capacity before volume capacity.

Question 2

What is the payload capacity of a dump truck?

Accepted Answer

Dump truck payloads vary by class: small trucks carry 5 tonnes, medium trucks 10 tonnes, large trucks 15 tonnes, and semi-trailer tippers 22+ tonnes. Actual capacity depends on registration class, axle configuration, and local road weight limits. Always confirm payload with your supplier or transport company before ordering.

Question 3

Why is gravel delivery weight-limited, not volume-limited?

Accepted Answer

Dense aggregate materials like gravel (1.6–2.0 t/m³) and road base (2.0 t/m³) are heavy relative to the truck bed volume. A 10m³ truck bed holding 1.8 t/m³ gravel would carry 18 tonnes — exceeding most truck weight limits. In practice, trucks are loaded to their weight limit before the bed is full. Always use weight-based trip calculations for aggregate materials.

Question 4

Is the last trip always a full load?

Accepted Answer

No — trip count is rounded up to whole trips, so the final trip usually carries less than the truck's maximum payload. For example, 36 tonnes across 4 trips at 10t capacity = 9 tonnes average, not 10. The result shows average weight per trip so you can communicate this to your driver.

Question 5

How does material type affect trip count?

Accepted Answer

Denser materials produce more weight from the same volume, requiring more trips. 20 m³ of pea gravel (1.6 t/m³) = 32 tonnes = 4 trips at 10t payload. 20 m³ of road base (2.0 t/m³) = 40 tonnes = 4 trips at 10t (5 with full loads). Always select the correct material to get an accurate weight calculation.

Question 6

How do I reduce the number of truck trips?

Accepted Answer

Use a larger truck (upgrade from medium 10t to large 15t or semi-trailer 22t). Order in batches and have the site ready to receive multiple loads. For very large volumes (200+ tonnes), semi-trailer tippers are most cost-effective per tonne. Some suppliers offer bulk discounts for large single orders that justify hiring larger equipment.

Gravel Truckloads Calculator

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