Gravel for a 8×40 area
3.95 cubic yards (5.5 tons)
of gravel for 320 sq ft at 4 inches deep. Add about 5% for compaction and spillage.
A 8×40 foot area is 320 square feet. Use 2 to 3 inches for a path or decorative cover, 4 inches for a patio, shed or slab base, and 6 to 8 inches (in layers) for a driveway or parking pad.
Gravel for 8×40 by depth
| Depth | Cubic yards | Tons | 50 lb bags |
|---|---|---|---|
| 2 in | 1.98 | 2.8 | 111 |
| 3 in | 2.96 | 4.1 | 166 |
| 4 in | 3.95 | 5.5 | 222 |
| 6 in | 5.93 | 8.3 | 332 |
| 8 in | 7.9 | 11.1 | 443 |
| 12 in | 11.85 | 16.6 | 664 |
How it’s worked out
- 40 × 8 × 4 in ÷ 12 = 106.67 cu ft.
- 106.67 ÷ 27 = 3.951 cu yd.
- 3.951 × 1.4 tons per yard = 5.53 tons.
Change the numbers
Other area sizes
- 6×40 area
- 8×30 area
- 8×50 area
- 10×40 area
- 8×25 area
- 8×24 area
- 4×40 area
- 8×20 area
- 8×60 area
- 12×40 area
- 8×16 area
- 8×15 area
Questions
- How much gravel do I need for a 8×40 area?
- 3.95 cubic yards (about 5.5 tons) at 4 inches deep, and 5.93 cubic yards (8.3 tons) at 6 inches.
- How many tons of gravel for 8×40?
- About 5.5 tons at 4 inches, assuming 1.4 tons per cubic yard. Crushed stone with fines can weigh up to 1.5 tons a yard.
- How many bags of gravel for 8×40?
- About 222 bags of 50 lb at 4 inches deep. Above a ton or so, bulk delivery is much cheaper.
- How much does gravel for 8×40 cost?
- About $277 at $50 a ton for a 4 inch layer, before delivery. Prices range from about $15 to $75 a ton depending on stone type.