Calculating How Much Gravel You Need for Your Driveway ...
When working with gravel for a driveway, calculate the measurements for an underlay separately. A road base is good for a bottom layer, while decorative gravel is best overlaid the road base. Using 2 inches of road base overlaid with 2 inches of gravel will greatly reduce your costs. Now, you''re ready to build your gravel driveway.