Anyone know which are the best blocks to use that will not deteriorate or crumble with the weight of the shed .. usually some blocks have a number don't they for strength ?
I am thinking of putting my 12 x 8 ft shed on a base similar to this -
but instead of just having the 4 concrete blocks and 2 bearers , i will be using 3 8ft bearers and 9 concrete blocks .So it will be 3 rows spaced out evenly instead of 2 like in the picture with a concrete block...