A 12×16 ft paver patio needs about 8.3 tons of crusher run for a 6 in compacted base (or 309 bags of 0.5 cu ft paver base), plus 34 bags of bedding sand and 56 ft of edge restraint.
| Base depth | Tons | 0.5 cu ft bags | Dig down |
|---|---|---|---|
| 4 in | 5.5 tons | 206 | 7.38 in |
| 6 in ✓ | 8.3 tons | 309 | 9.38 in |
| 8 in ✓ | 11 tons | 412 | 11.38 in |
| 10 in | 13.8 tons | 515 | 13.38 in |
| 12 in | 16.6 tons | 618 | 15.38 in |
✓ within Unilock's range for a patio.
Payload is on the Tire & Loading sticker in the driver's door jamb. Single-axle dump trucks carry about 5 tons; bigger orders come on a tandem (up to 18 tons).
Excavate 9.38 in below finished grade (6 in base + 1 in bedding + 2.375 in paver) over 221 sq ft. That is 6.39 cu yd of soil — about 9.5 tons in place, more once it is dug and loose. Slope the base away from the house (Unilock).
Bulk base and bag prices are typical 2026 figures (American Rock Supply, Kellogg Supply, retail snapshots). Tap any price to use your yard's or store's.
| Base depth | Crusher run | 0.5 cu ft bags | Bulk delivered | Dig down |
|---|---|---|---|---|
| 4 in | 5.5 tons | 206 | $235 | 7.38 in |
| 6 in | 8.3 tons | 309 | $315 | 9.38 in |
| 8 in | 11 tons | 412 | $395 | 11.38 in |
221 sq ft × 0.5 ft = 110.5 cu ft compacted = 4.09 cu yd. Crusher run compacts — Penn State places 8 in loose to finish at 6 in — so order 1.33× that, plus 5% for an uneven subgrade: 5.72 cu yd × 1.45 t = 8.29 tons.
County Materials' bag rule — (sq ft ÷ 6) × depth — gives 192 bags for the paved area alone. The 309 bags here add the base extension under the edge restraint and the volume lost to compaction; buying 192 would leave you about 117 bags short.
The full method, material data and tips are on the main paver base calculator page.