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Replacing Post and Beam sills
Just some thoughts, no real expertise here: I was happy to find some heavy turnbuckles in stock when I installed cable anchors for our construction trailer. The hardware-store owner said he kept them around because farmers used them to pull barns back to square. I really don't know if there'd be a use for that sort of idea here.
I have a new 10'x10' P&B where the sills are 2' above grade. If I had to get the weight off the sills, I'd try to get a trailer or steel frame from something under it and then jack up the frame but I have ground clearance.
I suspect that a building that's used to sitting that much out of level could use some remedial work on the wall stiffness etc. as well. Sounds like the posts plus stone didn't do the job over the long haul. I guess the original posts aren't on footings and the addition of footings should do the trick. It also sounds like the sills aren't going support the floor load when a slab is poured so maybe the original construction would be adequate. I don't know if there'd be any complications from a floating slab on stone on a slope that's inside the posts (if I have the idea right). It would prevent the use of cross braces on the posts, which you sometimes see in P&B structures on slopes.
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Replacing Post and Beam sills
Sounds like the project idea is well in hand. I'm just rambling on now. Most structures around here that are that old are log buildings built on top of logs that just lay on the ground. The just float on the frost and of course the floors aren't real level, but they do last longer than more modern structures built under code. Frost is a killer of foundations in unheated buildings. Piers or Alaska slab on grade is better but codes get in the way. The log on log idea won't work for a very tall building though.
I guess that when it's time to replace rotted logs it's done when the log will still support the building. Just jack up each end of a log, push a new one in beside a rotted one and push the old one out. I used to rent 40-acres of cedar bush down south that had an old cabin on it about the size of your barn. It was logs on logs construction and about 70-years old. It could have used some new logs though and I had to plane the bottom off the door to get in one spring. It's probably still standing. I guess it could be leveled by choosing logs of the right diameter and taper.
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09-16-2003, 06:36 
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