Re: Re: foundations
A standard rule of thumb is the foundation footing should be equal in thickness to the wigth of the wall, and at least three times as wide.
So that equals a 650×225 foundation (scale up dims slighty)
this foundation under a 9mx6m wall is 30 m linear. So a 650×225 needs just under 5 cubic metres. get 5 for that lil bit extra.
And the trench should be a min depth of 900m. But often they are deeper because you need to go deep enough to get to good solid ground.