Driveway planning
Driveway concrete sizes, thickness choices, and delivery fees
Driveways are where a simple cubic-yard answer can become a cost decision. Bagged concrete may work for a short apron repair, but a full driveway usually moves into ready-mix territory because the bag count and mixing time climb quickly. Use the calculator for volume, then compare the order size against access, delivery, and vehicle load needs.
Start with lane width
A narrow single-car driveway is often planned around 9 to 10 ft wide. A more comfortable single lane is 11 to 12 ft. Two-car residential driveways often land around 18 to 20 ft wide, with wider parking pads or turnarounds added as separate rectangles. For irregular layouts, estimate each rectangle and add the sections together. If the driveway flares at the street, measure that apron separately instead of averaging it into the full length.
Choose 4 inches or 6 inches deliberately
A 4 inch driveway is common for many passenger-car applications on a well-compacted base. Consider 5 to 6 inches when trucks, RVs, trailers, steep slopes, poor soil, or repeated turning loads are part of the use case. The upgrade from 4 inches to 6 inches increases volume by half, so it should be a conscious durability choice.
Watch the short-load range
Many residential driveways fall between 2 and 5 yd3 for one lane or a partial replacement. That range is usually too large for bags but may be smaller than a supplier's most efficient truck load. The result card calls out short-load risk so the estimate reflects the delivered price, not only the posted yard price.
| Project | Typical size | Thickness | Concrete note |
|---|---|---|---|
| Single-car strip | 9 x 18 ft | 4 in | About 2.00 yd3 before waste |
| Comfort single lane | 12 x 20 ft | 4 in | About 2.96 yd3 before waste |
| Two-car pad | 18 x 20 ft | 4 in | About 4.44 yd3 before waste |
| Heavy-use pad | 18 x 20 ft | 6 in | About 6.67 yd3 before waste |