10 by 10 ft at 4 inches
A 10 by 10 slab at 4 inches is 33.33 cubic feet, which is 1.23 yards. Take that yard number to concrete, gravel, sand, mulch, topsoil, or asphalt. This page does not pick a density.
Wheelbarrow loads are cubic feet divided by the tray, rounded up. The 6 in the form is a contractor-tray start. If the tray says 4 or 5.75, type that.
FAQ
How many cubic feet are in a cubic yard?
27. A yard is 3 feet on each side, and 3 × 3 × 3 = 27. Two yards are 54 cubic feet. There is no other conversion.
How many wheelbarrows in a yard?
Divide 27 by the cubic feet stamped on the tray. A 6 cubic foot tray is 4.5 loads, so you make 5 trips for a full yard. A 3 cubic foot tray is 9 loads. Read your tray.
Sources
- NIST Handbook 44, length and volume: The foot is the basis. A cubic yard is a cube 3 feet on a side, 27 cubic feet.