Question 1

How deep should gravel be for a driveway?

Accepted Answer

Recommended gravel depth: 100-150mm (4-6 inches) for residential driveways, 150-200mm for heavy vehicle access, 50-75mm for garden pathways, and 200-300mm for parking areas. Use a geotextile fabric below gravel on soft ground to prevent sinking.

Question 2

How much extra material should I order?

Accepted Answer

Order 5-10% extra for standard rectangular areas. Add 10-15% for irregular shapes with many cuts. Consider compaction factor (10-15% for sub-base layers). It is more cost-effective to have a small surplus than to place a second delivery order.