Quote:
Originally Posted by john70t
Around here, S.E. Michigan is all heavy clay soil which buckles and heaves with the snow and cold.
So nothing external attached to any solid foundation would be considered "permanent".
We also get the occasional 100degF summer and the -20degF winter.
(Probably less than Chicago and NYC or the upper East Coast though).
Sitting in sand, you probably want the frame pieces to be attached solid into the ground.
Make the flat sections disposable.
Any new drilling needs a shot of sealant spray.
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We're pretty lucky here. In winter it doesn't get below 46degF and summer doesn't get much above 78degF.
There is a very weird hard rock pan a couple of meters down. It's like solidified iron sand that I can barely scuff the surface of with a crow bar. GF has engineers specs for a deck she is getting made for her house, so I thought I'd just copy then double the spec's for the footprint of the foundation. And have it on the rock pan.