Identify the material
Density differs among gravel, sand, soil, concrete, and other materials.
Even one material can vary with gradation, moisture, and compaction.
Use compatible density units
With density in pounds per cubic foot, multiply cubic yards by 27 before multiplying by density.
Then divide pounds by 2,000 for U.S. short tons.
Do not hide density assumptions
Record the density source beside the estimate.
A supplier's current product-specific conversion is preferable for purchasing when available.
Distinguish loose and compacted states
Bulk density can change when material is excavated, transported, placed, or compacted.
Use the density that corresponds to the quantity being estimated.
Check payload and delivery separately
Truck capacity can be limited by weight or volume.
Confirm legal payload, supplier delivery size, and site access rather than converting tons directly to trucks with a generic factor.