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Not a builder, but this is not a good plan, IMO.
Vertical lumber set in stone will eventually settle and shift and tear the building apart. A stone perimeter trench will eventually settle, and everything above the sill plate(walls, windows, roof) will drop at that spot.
The stone will always try to leave downhill.
Additionally, stone trenches and holes acts like a bowl of collected water to be absorbed by anything nearbye.
I'd suggest(at a minimum) a shallow concrete perimeter foundation with pilings 4ft deep. We are in a frost zone so heaving of the ground will destroy everything not tied in.
The width, number, and location of the pilings and the dimmensions of the perimeter foundation wall will be based on the load calculation of the weight of the materials above it.
A taller foundation means less likelyhood of water splashing onto wood and/or insects invading.
It is probably governed by local code and will probably require a permit as a occupied structure. You don't want a wall of glass falling over with people inside. They may go after you for taxes later if an inspector sees it.
(The concrete people may not pour without a permit as well.)
At a DIY minimum, get a large diameter post hole digger for the concrete pilings and make a frame for the concrete perimeter tied into these with rebar. Remember to have the Simpson hardware attachments mapped out for securing the wood.
Add 3/4 stone and compact everything before a pour.
Level, level, level.
Trench a perimeter drain around the foundation that leads to a pit(drywell) and a lot of freeze/thaw and furthur rot issues are solved.
Last edited by john70t; 05-19-2011 at 07:49 AM..
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