Concrete for a 10×22 slab
2.72 cubic yards (135 × 80 lb bags)
for a 10×22 ft slab 4 inches thick: 73.3 cu ft. Bag counts include 10% extra; at 6 inches you need 4.07 yards.
A 10×22 foot slab covers 220 square feet. At the standard 4 inch thickness for a patio, walkway or shed floor, that is 73.3 cubic feet of concrete, or 2.72 cubic yards. At this size you can mix 135 bags of 80 lb (about $878 and a long day of mixing) or order 3 yards of ready-mix (about $495, plus the short-load fee most suppliers charge under 3 to 4 yards).
Concrete for a 10×22 slab by thickness
| Thickness | Cubic yards | Cubic feet | 80 lb bags | 60 lb bags | 40 lb bags |
|---|---|---|---|---|---|
| 3 in | 2.04 | 55 | 101 | 135 | 202 |
| 4 in | 2.72 | 73.3 | 135 | 180 | 269 |
| 5 in | 3.4 | 91.7 | 169 | 225 | 337 |
| 6 in | 4.07 | 110 | 202 | 269 | 404 |
| 8 in | 5.43 | 146.7 | 269 | 359 | 538 |
Bag counts include 10% extra for spillage and uneven ground. Cubic yards and cubic feet are the exact volume.
How it’s worked out
- Convert the thickness to feet: 4 in ÷ 12 = 0.333 ft.
- Multiply length × width × thickness: 22 × 10 × 0.333 = 73.33 cu ft.
- Divide by 27 for cubic yards: 73.33 ÷ 27 = 2.716 cu yd.
- Add 10% and divide by the bag yield: 80.67 ÷ 0.6 = 135 bags of 80 lb mix (rounded up).
Under the slab, plan on 4 inches of compacted gravel: about 2.72 cubic yards. For driveways and anything that carries a vehicle, go to 5 or 6 inches and add rebar or wire mesh.
Change the numbers
Other slab sizes
- 10×20 slab
- 10×24 slab
- 10×25 slab
- 10×18 slab
- 10×26 slab
- 8×22 slab
- 12×22 slab
- 10×16 slab
- 10×28 slab
- 10×15 slab
- 10×14 slab
- 10×30 slab
Questions
- How many bags of concrete do I need for a 10×22 slab?
- At 4 inches thick, a 10×22 slab takes 135 bags of 80 lb concrete mix, 180 bags of 60 lb mix or 269 bags of 40 lb mix, including 10% extra.
- How many yards of concrete for a 10×22 slab?
- 2.72 cubic yards at 4 inches thick, 3.4 at 5 inches and 4.07 at 6 inches, before adding extra for waste.
- How much does a 10×22 concrete slab cost?
- The concrete alone for a 4 inch 10×22 slab costs about $878 in 135 bags of 80 lb mix (at about $7 a bag) or about $495 for 3 yards of ready-mix (at about $165 a yard, before delivery fees). Professionally poured slabs usually run $6 to $12 per square foot, about $1,320 to $2,640 for 220 sq ft.
- How much does a 10×22 slab weigh?
- About 5.3 tons at 4 inches thick (concrete weighs about 145 lb per cubic foot).