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TNeat 08-01-2007 04:44 PM

foundation question for building a small cabin
I am planning to build a small cabin as a weekend type getaway place. Nothing fancy maybe 800 to 900 square feet or so. I plan on a pier and beam type foundation.

My question is if I dig down to solid rock (which will not be more than about a foot in this area) and I set a 6x6 treated lumber post for my piers, should I put them in concrete, or just pack them with the dirt to fill? Not sure if concrete will incourage rot any more or less than just native soil packed around them.

windshield_king 08-01-2007 05:46 PM

If it were my cabin I would dig down below frost line(i live up north)pour foundation, and then get those tubes you can fill with concrete, reinforce with re-bar use that as my pier and never care about rot. Then you could allways use stone as a facing over the piers. just a thought.

concretemasonry 08-01-2007 06:36 PM

foundation question for building a small cabin
Don't just sit posts on rock.

Clean the rock and find a spot to drive a couple of rebar into. Pour concrete and insert a Simpson bracket to hold your 6x6 post.
With your method, a good wind could slide a small cabin if it is just sitting on rock. The brackets prevent rotting of the post. Do not forget the proper fasteners so the treated wood does not eat them up.

Tscarborough 08-01-2007 07:08 PM

Or you could just use the rock laying around and make stone foundation pillars. Then you don't have to worry about wood rot or rust.

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