Shed / Hut / Summer house build, unsure about stumps
I'm in the process of building a 7ft x 7ft or 2134mm (Timber shed. Ive been able to source free timber and the build is at the frame stage (floor is 140 x 45 treated and frame is 70 x 30) I'll be cladding the exterior with 12mm birch ply with hard wood (Tassy Oak) sealers along the joins. It will have a Polycarbonate roof.The Deck and roof will be extended by approximately 900mm creating a deck and overhung
So my question is what would be a suitable stump to use? I have normal soil but a clay base a 3 - 4 ft down.