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Kiko Denzer on Art
[Cob] Foundation for cobKristen Davenport kristen at boxcarfarm.com
Thu Jun 25 15:20:08 PDT 2009
Well. Here's another question. The cob section we are adding, we are adding on to a house that has an old river-rock foundation without any mortar. This house has been stable for nearly 100 years-- it was built we believe in 1918. The walls are still solid and no shifting has occurred. The rock foundation on the old house is only 10 inches or so deep, just some mid-sized rounded stones thrown into a shallow trench. It has been suggested that we not bother with ANY foundation because we live in an area with very stable soil and no frost heave that anyone is aware of... What if we just dug down past the level of the grass roots, built a stem wall a foot or two high, and started on the cob walls? This would also help us protect our old foundation because we wouldn't have to be digging in next to it. Opinions? Kristen ----- Original Message ----- From: "Ron Becker" <ron45 at tularosa.net> To: "Kristen Davenport" <kristen at boxcarfarm.com> Sent: Thursday, June 25, 2009 1:36 PM Subject: Re: [Cob] Foundation for cob > Hi Kristen, perfect opportunity for a compromise. Bags or rubble, my last > choice would be poured concrete. The ease of bags below grade would get > my vote. No use laying up rock work no one will see. Then go with laid up > rock stems to get you above splash height. `Be good to have some sort of > moisture barrier no matter what you do to keep it out of the bales and > cob. Most contractors are more worried about what their peers and code > people will think than what will work, is inexpensive and right for you. > You can see pics of our stem walls we did for our adobe back before many > of us knew about cob. They are in the pictures section of the myspace url > below my signature. There are tunes I wrote to check out as well. All > recorded on solar energy. > > Ron > Living and playing outside the box. > > http://www.myspace.com/ron45becker > > On Jun 24, 2009, at 4:38 PM, Kristen Davenport wrote: > >> Hi there. >> We are going to soon dig a 2-foot foundation trench for a 16-by-30 cob >> addition to our adobe house. The walls will be some parts cob and some >> parts >> straw bale. Our inclination is to build a foundation and stem wall out >> of >> mortared stone (we have plenty around here) but a local contractor guy >> is >> discouraging this , urging us to instead pour a concrete foundation with >> rebar, etc, etc. Meanwhile, my local "cob dude" expert urges earthbags. >> >> Advice and stories of your experiences welcome. >> >> Kristen >> >> >> _______________________________________________ >> Coblist mailing list >> Coblist at deatech.com >> http://www.deatech.com/mailman/listinfo/coblist >> >> > >
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