how deep can gravel base for shed
To allow water to drain into the gravel under the shed, rather than getting the shed base wet. The water that collects around the gravel will eventually drain down into the soil below. The gravel should be 15 to 25 cm deep. You can calculate the volume by multiplying: length x width x depth = volume Easy.Add a little extra, just in case you dig a little too deep in places.he water that collects around the gravel will eventually drain down into the soil below. The gravel should be 15 to 25 cm deep. You can calculate the volume by multiplying: length x width x depth = volume Easy. Add a little extra, just in case you dig a little too deep in places.