Concrete for a 10×26 slab
3.21 cubic yards (159 × 80 lb bags)
for a 10×26 ft slab 4 inches thick: 86.7 cu ft. Bag counts include 10% extra; at 6 inches you need 4.81 yards.
A 10×26 foot slab covers 260 square feet. At the standard 4 inch thickness for a patio, walkway or shed floor, that is 86.7 cubic feet of concrete, or 3.21 cubic yards. At this size ready-mix is cheaper and far less work than bags: about 3.75 yards, roughly $619 before delivery fees, against $1,034 for 159 bags of 80 lb mix.
Concrete for a 10×26 slab by thickness
| Thickness | Cubic yards | Cubic feet | 80 lb bags | 60 lb bags | 40 lb bags |
|---|---|---|---|---|---|
| 3 in | 2.41 | 65 | 120 | 159 | 239 |
| 4 in | 3.21 | 86.7 | 159 | 212 | 318 |
| 5 in | 4.01 | 108.3 | 199 | 265 | 398 |
| 6 in | 4.81 | 130 | 239 | 318 | 477 |
| 8 in | 6.42 | 173.3 | 318 | 424 | 636 |
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 × 10 × 0.333 = 86.67 cu ft.
- Divide by 27 for cubic yards: 86.67 ÷ 27 = 3.21 cu yd.
- Add 10% and divide by the bag yield: 95.33 ÷ 0.6 = 159 bags of 80 lb mix (rounded up).
Under the slab, plan on 4 inches of compacted gravel: about 3.21 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
- 10×25 slab
- 10×24 slab
- 10×28 slab
- 10×22 slab
- 10×30 slab
- 8×26 slab
- 12×26 slab
- 10×20 slab
- 10×32 slab
- 10×18 slab
- 10×16 slab
- 10×36 slab
Questions
- How many bags of concrete do I need for a 10×26 slab?
- At 4 inches thick, a 10×26 slab takes 159 bags of 80 lb concrete mix, 212 bags of 60 lb mix or 318 bags of 40 lb mix, including 10% extra.
- How many yards of concrete for a 10×26 slab?
- 3.21 cubic yards at 4 inches thick, 4.01 at 5 inches and 4.81 at 6 inches, before adding extra for waste.
- How much does a 10×26 concrete slab cost?
- The concrete alone for a 4 inch 10×26 slab costs about $1,034 in 159 bags of 80 lb mix (at about $7 a bag) or about $619 for 3.75 yards of ready-mix (at about $165 a yard, before delivery fees). Professionally poured slabs usually run $6 to $12 per square foot, about $1,560 to $3,120 for 260 sq ft.
- How much does a 10×26 slab weigh?
- About 6.3 tons at 4 inches thick (concrete weighs about 145 lb per cubic foot).