Concrete for a 10×16 slab
1.98 cubic yards (98 × 80 lb bags)
for a 10×16 ft slab 4 inches thick: 53.3 cu ft. Bag counts include 10% extra; at 6 inches you need 2.96 yards.
A 10×16 foot slab covers 160 square feet. At the standard 4 inch thickness for a patio, walkway or shed floor, that is 53.3 cubic feet of concrete, or 1.98 cubic yards. At this size you can mix 98 bags of 80 lb (about $637 and a long day of mixing) or order 2.25 yards of ready-mix (about $371, plus the short-load fee most suppliers charge under 3 to 4 yards).
Concrete for a 10×16 slab by thickness
| Thickness | Cubic yards | Cubic feet | 80 lb bags | 60 lb bags | 40 lb bags |
|---|---|---|---|---|---|
| 3 in | 1.48 | 40 | 74 | 98 | 147 |
| 4 in | 1.98 | 53.3 | 98 | 131 | 196 |
| 5 in | 2.47 | 66.7 | 123 | 163 | 245 |
| 6 in | 2.96 | 80 | 147 | 196 | 294 |
| 8 in | 3.95 | 106.7 | 196 | 261 | 392 |
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: 16 × 10 × 0.333 = 53.33 cu ft.
- Divide by 27 for cubic yards: 53.33 ÷ 27 = 1.975 cu yd.
- Add 10% and divide by the bag yield: 58.67 ÷ 0.6 = 98 bags of 80 lb mix (rounded up).
Under the slab, plan on 4 inches of compacted gravel: about 1.98 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
- 10×15 slab
- 10×14 slab
- 10×18 slab
- 8×16 slab
- 12×16 slab
- 10×12 slab
- 10×20 slab
- 10×10 slab
- 10×22 slab
- 6×16 slab
- 14×16 slab
- 5×16 slab
Questions
- How many bags of concrete do I need for a 10×16 slab?
- At 4 inches thick, a 10×16 slab takes 98 bags of 80 lb concrete mix, 131 bags of 60 lb mix or 196 bags of 40 lb mix, including 10% extra.
- How many yards of concrete for a 10×16 slab?
- 1.98 cubic yards at 4 inches thick, 2.47 at 5 inches and 2.96 at 6 inches, before adding extra for waste.
- How much does a 10×16 concrete slab cost?
- The concrete alone for a 4 inch 10×16 slab costs about $637 in 98 bags of 80 lb mix (at about $7 a bag) or about $371 for 2.25 yards of ready-mix (at about $165 a yard, before delivery fees). Professionally poured slabs usually run $6 to $12 per square foot, about $960 to $1,920 for 160 sq ft.
- How much does a 10×16 slab weigh?
- About 3.9 tons at 4 inches thick (concrete weighs about 145 lb per cubic foot).