Soil for 20 Square Metres

Calculating Soil for a 20 Square Metre Area

Twenty square metres represents a medium-sized garden improvement project that's common in Australian backyards. This might be a substantial garden bed renovation, a new planting area, or the combined beds around a patio or outdoor living space. At 150mm depth, which provides a good foundation for most ornamental plantings, you'll need approximately 3 cubic metres of topsoil to complete this area.

Three cubic metres of topsoil weighs approximately 3.3 tonnes, placing this firmly in the realm of bulk delivery. This is a substantial load that will arrive on a tipper truck and form a pile roughly two metres square and about a metre high. Make sure you have clear access for the truck and a suitable spot to receive the delivery that's as close as practical to your work area.

Delivery Considerations

At three cubic metres, you're dealing with a meaningful quantity of heavy material. Discuss access with your supplier before ordering, as larger trucks may have difficulty navigating narrow driveways or low-hanging obstacles. Some suppliers offer smaller vehicles or can split loads if access is constrained. Having the delivery placed strategically can save considerable time and effort during the spreading process.

Spreading Three Cubic Metres

Plan your spreading strategy before the soil arrives. A standard wheelbarrow holds roughly 80 litres, meaning you're looking at approximately 38 wheelbarrow loads to move all the material. Working methodically from one end of the area to the other prevents you from having to move soil twice. Consider enlisting help for a project this size, or spread the work across a couple of sessions to avoid fatigue.

Need to calculate different dimensions? Use our main soil calculator to enter your exact measurements.