How Much Concrete for a 3x150 Sidewalk?
How much concrete for a 3x150 sidewalk: about 5.56 cubic yards at the standard 4-inch thickness. The walk covers 450 square feet, so each extra inch of depth adds about 1.39 yards.
Concrete calculator →Step-by-step
- Area: 3 × 150 = 450 sq ft.
- Volume: 450 × (4 ÷ 12) = 150.0 cu ft.
- Yards: ÷ 27 = 5.56 yd³.
- Bags instead: 250 bags of 80 lb mix (334 of 60 lb).
Related: How Much Concrete for a 6x10 Sidewalk?
Concrete by thickness
| Thickness | Cubic feet | Cubic yards | Yards +10% | 80 lb bags | 60 lb bags |
|---|---|---|---|---|---|
| 4 in | 150.0 | 5.56 | 6.11 | 250 | 334 |
| 5 in | 187.5 | 6.94 | 7.64 | 313 | 417 |
| 6 in | 225.0 | 8.33 | 9.17 | 375 | 500 |
Thickness for walks
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 Concrete for a 6x20 Sidewalk?
Joints along the walk
Tool a control joint about every 3 feet, matching the width, which gives roughly 49 joints along this walk. Add an isolation joint where the walk meets the house, steps or a driveway so the slabs can move independently.
Truck, bags or a short load
This is past the point where bags are practical; call a ready-mix plant. If the truck cannot reach the far end of the walk, plan for wheelbarrows or a chute extension; see how far a concrete chute reaches.
Slope and finish
Slope the walk a little to one side for drainage and finish it with a broom for traction. Round the edges with an edging tool so they chip less.
Questions people ask
How many yards of concrete for a 3x150 sidewalk?
About 5.56 cubic yards at 4 inches thick.
How many bags for a 3x150 sidewalk?
About 250 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 3 feet for a 3-foot-wide walk, keeping panels close to square.
How much does a cubic yard of concrete weigh?
Roughly 4,000 pounds, or about 2 tons, for normal-weight concrete.
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 3x75 Sidewalk?
- How Much Concrete for a 3x100 Sidewalk?
As an Amazon Associate, AsphaltTons.com earns from qualifying purchases. Product links below are sponsored.