Calculate compacted volume
Volume = area × compacted thickness after converting all dimensions to consistent units.
Base, binder, and surface lifts should be separate lines when their thicknesses or mixtures differ.
Convert volume to mass
Mass = compacted volume × approved mixture density.
Use job-mix or producer data where available rather than a generic asphalt density.
Round to order tons
Add a visible allowance for irregular edges, leveling, and operational loss only after the theoretical tonnage is known.
Truckload and minimum-order constraints can affect final ordered tons.
Build the cost
Material cost = ordered tons × quoted unit price; hauling, tack, equipment, labor, and base preparation are separate costs.
Thickness design and mixture selection require project-specific engineering/specification review.