Plan the gravel before the trucks arrive

The expensive mistake is usually not ordering one extra yard. It is placing good stone on an unprepared base or trapping water where it can soften the drive.

Start with the finished shape

Mark the traveled width, entrance flare, turnaround, drainage path, and any future utilities. A typical private drive may be narrower than the entrance, but emergency access and local permit requirements can control the final width and geometry.

Calculate compacted volume

Multiply length × width × depth in feet, then divide by 27 for cubic yards. Add roughly 10% for compaction, grading, and minor variations. Example: 100 ft × 12 ft × 0.5 ft ÷ 27 = 22.2 yd³; with 10%, plan around 24.4 yd³.

Base checklist

• Strip organics, roots, and loose topsoil.
• Shape the subgrade so water moves away rather than pooling.
• Use woven geotextile stabilization fabric when soft soil or separation is a concern.
• Place stone in lifts that the available equipment can compact.
• Build a modest crown or cross-slope suited to the site.
• Keep sediment from washing into the road or drainage system.

Where DIY should stop

Bring in experienced help when the drive crosses a wet area, requires a culvert, sits on a steep grade, changes public-road drainage, or must support frequent concrete and material trucks. Those conditions can turn a cheap first layer into an expensive rebuild.

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