How Much Concrete for a 5x50 Sidewalk?
A sidewalk 5 feet wide and 50 feet long is 250 square feet. Poured 4 inches thick, that is 3.09 cubic yards. How much concrete for a 5x50 sidewalk with a 10 percent allowance: about 3.40 yards.
Concrete calculator →Step-by-step
- Area: 5 × 50 = 250 sq ft.
- Volume: 250 × (4 ÷ 12) = 83.3 cu ft.
- Yards: ÷ 27 = 3.09 yd³.
- Bags instead: 139 bags of 80 lb mix (186 of 60 lb).
Related: How Much Gravel for a 5x50 Walkway?
Concrete by thickness
| Thickness | Cubic feet | Cubic yards | Yards +10% | 80 lb bags | 60 lb bags |
|---|---|---|---|---|---|
| 4 in | 83.3 | 3.09 | 3.40 | 139 | 186 |
| 5 in | 104.2 | 3.86 | 4.24 | 174 | 232 |
| 6 in | 125.0 | 4.63 | 5.09 | 209 | 278 |
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 5x50 Walkway?
Joints along the walk
Tool a control joint about every 5 feet, matching the width, which gives roughly 9 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 3.09 yards, a ready-mix truck is usually easier than bags. 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 5x50 sidewalk?
About 3.09 cubic yards at 4 inches thick.
How many bags for a 5x50 sidewalk?
About 139 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 5 feet for a 5-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 5x30 Sidewalk?
- How Much Concrete for a 5x40 Sidewalk?
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