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The Work of Art and The Art of Work Kiko Denzer on Art |
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[Cob] MixDulane silkworm at spiderhollow.comSun Jul 18 21:38:33 CDT 2010
My walls are 14" at the bottom and 11" at the top, but round is strong and my place is little. My foundation is about 16" except underground where my cement core cylinders are 12". -----Original Message----- From: coblist-bounces at deatech.com [mailto:coblist-bounces at deatech.com] On Behalf Of Dulane Sent: Sunday, July 18, 2010 11:08 AM To: 'Janet Standeford'; coblist at deatech.com Subject: Re: [Cob] Mix Amazingly, I only used about 3 sixty pound bales in my whole (12x12) cob house. I probably did it wrong, but after I mixed my clay and sand (which is specific to the local materials) I added 1/10 the total mass of straw. Which was like a 3" flake per 40-50 lb load. I don't know if everyone calls the chunks that straw comes apart in Flakes or not, but I do. Straw really expands when you pull it apart. I didn't use any wattle and daub, which would use more straw. I used masses of straw in corbels. I think the amount of straw you use has to do also...with the quality of your other materials. It seems some clays are lighter and mushier, so more straw might be needed for a dense loaf. And some local sands/soils might be finer, so more straw might be needed. I think you are looking for the densist brick you can get that holds its dry shape in all kinds of weather and bonds together with no crumbling. Maybe I should have used more, but there seemed to be plenty of straw to weave into the mix. I harvested some of the local bunch grass here and used it in some of the cob. I think it was canary reed grass. I cut it by the handful (just before it seeded) and threw it on a tarp to dry in the sun for a few days. -----Original Message----- From: coblist-bounces at deatech.com [mailto:coblist-bounces at deatech.com] On Behalf Of Janet Standeford Sent: Sunday, July 18, 2010 8:49 AM To: coblist at deatech.com Subject: Re: [Cob] Mix Can anyone tell me how much cob, by foot measurement, that one bale of straw weighing 110 lbs should make? BTW one of our projects this year if enough people show up will be a cob cistern. Janet Standeford OR www.buildingnaturally.info (Owned by you) A resource for healthy homes. _______________________________________________ Coblist mailing list Coblist at deatech.com http://www.deatech.com/mailman/listinfo/coblist _______________________________________________ Coblist mailing list Coblist at deatech.com http://www.deatech.com/mailman/listinfo/coblist
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