Jocelyn Campbell wrote:
I have a question about the clay used in cob building.
A geologist told me there isn't truly any clay in the majority of the Seattle area. Though I know people use clay-like soil to build cob here.
Does cob require the strictly geologically defined clay, or is "clay-like" good enough?
This is interesting. The region I'm moving to has a lot of towns named things like "Red Banks" and. North Mississippi is all rock hard red clay. No good at all for growing anything but cotton and soybeans, so I sure am hoping it works for a building material!
Deston Lee wrote:other applications might work if you can find a way to get the material dry, like kilning bricks or entire homes such as calearth has done...
Jami McBride wrote:Here is the recipe and test for cob - http://weblife.org/cob/cob_043.html
Maybe it is cob when applied freehand and adobe when baked as bricks in the sun first..... Or cob is sand clay and only straw... not just any fibrous material... ?
Adobe is a natural building material made from sand, clay, and water, with some kind of fibrous or organic material (sticks, straw, dung), which is shaped into bricks using frames and dried in the sun.
Joel Hollingsworth wrote:
I wonder if a solar-thermal driven ventilation system would be enough: an air intake that runs between carcoal and glass, perhaps, with well-designed airflow in the interior and a nice tall chimney to exhaust the structure?
Krummholtz McCoy wrote:This is interesting. The region I'm moving to has a lot of towns named things like "Red Banks" and. North Mississippi is all rock hard red clay. No good at all for growing anything but cotton and soybeans, so I sure am hoping it works for a building material!
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