Wheelbarrow Concrete Delivery: How Many Barrows per m3?

How many wheelbarrows per m3 of concrete?

A builder's wheelbarrow may be advertised at 70-100 L, but wet concrete is heavy and hard to control. For planning, use a 50 L working load. That keeps the barrow safer to push and gives a realistic trip count.

Crew sizing and waiting-time risk

Truck waiting time is the hidden cost. Ready-mix needs steady discharge; if the barrow crew slows down, the truck can sit past the included unload allowance. Fatigue usually appears before the maths says the job is impossible.

• One barrow: only sensible for very small pours close to the truck.
• Two barrows: workable for 1-2 m³ if the route is flat and short.
• Three or more barrows: consider whether a line pump is cheaper than extra labour and waiting charges.

Route planning before the truck arrives

Walk the route with an empty barrow, then imagine it loaded with wet concrete. Remove loose boards, hoses, rubble, steps, tight turns, and trip hazards. Protect tiles, pavers, and finished driveways from slurry spills.

Keep the route at least 900 mm wide where possible. Any gradient, step, soft lawn, or long corridor multiplies effort. On hot days, slow barrowing also increases finishing pressure because the first concrete placed starts stiffening while later trips are still moving.

When chute, mini-mix, or pump delivery is better

Use direct chute delivery when the truck can reach the formwork. Use a mini-mix truck when a smaller truck can safely get closer. Use a concrete pump when the route is long, sloped, stepped, or above about 1.5-2 m³.

The best discharge method is the one that keeps the truck moving, the crew safe, and the concrete placed fast enough for proper screeding, finishing, and curing.