7x4 garden room

[MortarThePoint]

I've started another thread about a different approach that doesn't suit your desire for a more substantial foundation, but is interesting:

 

 

 

 

Edited July 30 by MortarThePoint

[saveasteading]

Oddly this is a building where these little screw piles might be appropriate. Ie as no regs. As wrongly assumed earlier.

Screw in piles, then timbers spanning them, then joists.

There would be a void underneath.

 

For clarity i only mean these, not big time proper piling. At b&q for patios I expect. Prob best get longer stronger ones than these.