How Much Concrete for a 4x10 Sidewalk?
A sidewalk 4 feet wide and 10 feet long is 40 square feet. Poured 4 inches thick, that is 0.49 cubic yards. How much concrete for a 4x10 sidewalk with a 10 percent allowance: about 0.54 yards.
Concrete calculator →Step-by-step
- Area: 4 × 10 = 40 sq ft.
- Volume: 40 × (4 ÷ 12) = 13.3 cu ft.
- Yards: ÷ 27 = 0.49 yd³.
- Bags instead: 23 bags of 80 lb mix (30 of 60 lb).
Related: How Much Gravel for a 4x10 Walkway?
Concrete by thickness
| Thickness | Cubic feet | Cubic yards | Yards +10% | 80 lb bags | 60 lb bags |
|---|---|---|---|---|---|
| 4 in | 13.3 | 0.49 | 0.54 | 23 | 30 |
| 5 in | 16.7 | 0.62 | 0.68 | 28 | 38 |
| 6 in | 20.0 | 0.74 | 0.81 | 34 | 45 |
How thick a sidewalk should be
Most residential sidewalks are 4 inches thick on a compacted gravel base. Thicken any section that a car, mower or delivery cart will roll over, especially where the walk meets the drive.
Related: How Much Pea Gravel for a 5x20 Walkway?
Joints along the walk
Tool a control joint about every 4 feet, matching the width, which gives roughly 1 joints along this walk. Add an isolation joint where the walk meets the house, steps or a driveway so the slabs can move independently.
How to buy it
At 0.49 yards, bags are realistic for a patient crew. Long walks are often poured in sections, so ask the plant how long the truck can wait and whether there is a short-load fee.
Slope and finish
Give the walk a slight cross slope, around 1/4 inch per foot, so water sheds to one side. A light broom finish across the walk gives grip when it is wet.
Questions people ask
How many yards of concrete for a 4x10 sidewalk?
About 0.49 cubic yards at 4 inches thick.
How many bags for a 4x10 sidewalk?
About 23 bags of 80 lb concrete at 4 inches.
How thick should a sidewalk be?
Four inches for foot traffic, 6 inches where vehicles cross.
How far apart should sidewalk joints be?
About every 4 feet for a 4-foot-wide walk, keeping panels close to square.
When is bagged concrete practical?
Usually for jobs under about a cubic yard. Beyond that, mixing dozens of bags by hand gets slow and batches may not blend well.
Related guides
- Concrete Sidewalk Thickness for Walks and Crossings
- How Much Concrete for a Sidewalk? Yards per Foot
- How Much Area Does a Yard of Concrete Cover?
- How Many Bags of Concrete in a Yard? 40, 60, 80 lb
- Gravel Base Under a Concrete Slab: Depth and Tons
- How Many Yards in a Concrete Truck? Mixer Sizes
- Concrete Short Load Fee: What It Is and How to Cut It
- 60 lb vs 80 lb Concrete Bags: Yield, Count, and Cost
- Rebar vs Wire Mesh in a Slab: Which One to Use
- How Much Concrete for a 3x150 Sidewalk?
- How Much Concrete for a 3x200 Sidewalk?
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