Concrete for a 22×26 slab
7.06 cubic yards (350 × 80 lb bags)
for a 22×26 ft slab 4 inches thick: 190.7 cu ft. Bag counts include 10% extra; at 6 inches you need 10.59 yards.
A 22×26 foot slab covers 572 square feet. At the standard 4 inch thickness for a patio, walkway or shed floor, that is 190.7 cubic feet of concrete, or 7.06 cubic yards. At this size ready-mix is cheaper and far less work than bags: about 8 yards, roughly $1,320 before delivery fees, against $2,275 for 350 bags of 80 lb mix.
Concrete for a 22×26 slab by thickness
| Thickness | Cubic yards | Cubic feet | 80 lb bags | 60 lb bags | 40 lb bags |
|---|---|---|---|---|---|
| 3 in | 5.3 | 143 | 263 | 350 | 525 |
| 4 in | 7.06 | 190.7 | 350 | 467 | 700 |
| 5 in | 8.83 | 238.3 | 437 | 583 | 874 |
| 6 in | 10.59 | 286 | 525 | 700 | 1049 |
| 8 in | 14.12 | 381.3 | 700 | 933 | 1399 |
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: 26 × 22 × 0.333 = 190.67 cu ft.
- Divide by 27 for cubic yards: 190.67 ÷ 27 = 7.062 cu yd.
- Add 10% and divide by the bag yield: 209.73 ÷ 0.6 = 350 bags of 80 lb mix (rounded up).
Under the slab, plan on 4 inches of compacted gravel: about 7.06 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
- 22×25 slab
- 22×24 slab
- 22×28 slab
- 20×26 slab
- 24×26 slab
- 25×26 slab
- 22×22 slab
- 22×30 slab
- 18×26 slab
- 26×26 slab
- 20×22 slab
- 22×32 slab
Questions
- How many bags of concrete do I need for a 22×26 slab?
- At 4 inches thick, a 22×26 slab takes 350 bags of 80 lb concrete mix, 467 bags of 60 lb mix or 700 bags of 40 lb mix, including 10% extra.
- How many yards of concrete for a 22×26 slab?
- 7.06 cubic yards at 4 inches thick, 8.83 at 5 inches and 10.59 at 6 inches, before adding extra for waste.
- How much does a 22×26 concrete slab cost?
- The concrete alone for a 4 inch 22×26 slab costs about $2,275 in 350 bags of 80 lb mix (at about $7 a bag) or about $1,320 for 8 yards of ready-mix (at about $165 a yard, before delivery fees). Professionally poured slabs usually run $6 to $12 per square foot, about $3,432 to $6,864 for 572 sq ft.
- How much does a 22×26 slab weigh?
- About 13.8 tons at 4 inches thick (concrete weighs about 145 lb per cubic foot).