What can I use as Fill to level it up?

Select Red Hill Gravel or 100mm Crushed Rock as fill

What can I use as a base for inside the shed?

Select either a 20mm or 40mm Class 3 crushed rock

How much do I need?

Work out the cubic metres then multiply it by 1.5 for loose tonnes volume or 2.4 for compacted tonnes volume.

How do I work out cubic metres?

Multiply length x width x depth. ie: 100m x 3m x 100mm is 100 x 3 x .1 = 30m3
30m3 x 1.5 = 45 tonnes of loose material
30m3 x 2.4 = 72 tonnes of fully compacted material

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