Planning a gravel driveway
Start with the footprint
Measure the actual area to cover, including turnouts and parking pads. Split a curved driveway into smaller sections rather than multiplying the longest length by the widest width. Calculate each layer separately if its footprint or material differs.
Think in layers
A driveway is a system: existing soil, drainage, structural aggregate and a wearing surface. Adding decorative stone over soft soil does not solve the underlying support problem. Required layer thickness depends on subgrade, traffic, climate and local construction practice; get a site-specific recommendation before ordering.
Measure the right depth
Be clear whether a quoted depth describes loose delivery material or the finished compacted layer. The calculator’s allowance adds material to the geometric volume; it does not predict compaction. A supplier or contractor should confirm the conversion for your product.
Plan the delivery
Discuss truck access, overhead clearance, turnaround space, driveway load limits and a safe dumping location with the hauler. Ask whether multiple loads or separate deliveries for different layers are required. Keep material away from drainage routes.