How deep should mot type 1 be for a shed base?

Q: How deep should mot type 1 be for a shed base?

100 to 150mm, which is 3.9 to 5.9 inches. Mainland Aggregates gives 100mm for patios and 150mm for vehicle loading; a shed base sits between the two.

How deep should a shed base be?

A shed base is a compacted sub-base with either a concrete slab or a bedded paving layer on top. It needs to be level and to drain, which is what the sub-base is for.

Published laid depths for a shed base, by material
Material	Depth	In inches	Where the depth comes from
MOT Type 1	100 to 150mm	3.9 to 5.9 in	Mainland Aggregates gives 100mm for patios and 150mm for vehicle loading; a shed base sits between the two.

Material

Depth

In inches

Where the depth comes from

MOT Type 1

100 to 150mm

3.9 to 5.9 in

Mainland Aggregates gives 100mm for patios and 150mm for vehicle loading; a shed base sits between the two.

Working out the quantity once you have the depth

Multiply the area by the depth for a volume, then by the material's bulk density for a weight. Each calculator below does it in the units that material is sold in, and each shows the density range its figure came from.

MOT Type 1 calculator1600 to 2200 kg/m3, 20 percent waste
Hardcore calculator1600 to 2100 kg/m3, 20 percent waste
Concrete calculator2373 to 2500 kg/m3, 10 percent waste
Sharp sand calculator1500 to 1800 kg/m3, 10 percent waste
Paver base calculator1424 to 1661 kg/m3, 20 percent waste

Materials without a published depth for this use

No supplier read for this site publishes a laid depth for hardcore, concrete, sharp sand and road base on a shed base, so none is stated here. Their calculators take whatever depth you enter.