Cob: Re: Underground Cob

Sat Jan 18 20:39:30 CST 2003

        Bentonite waterproofs by swelling and forming a water proof seal but 
you must be careful. A leaky faucet on one side of a house has been known to 
push in the wall. I issued a couple of patents on bentonite foundations and 
you should be able to find the patents at <A HREF="http://164.195.100.11/netahtml/search-adv.htm">
http://164.195.100.11/netahtml/search-adv.htm</A>. The only one which I remember 
used a layer of bentonite against the wall and a layer of sand or stone 
adjacent the layer of bentonite. The two layers were formed by placing a 
sheet of plywood parallel to the wall and filling sand on one side and 
bentonite on the other. The bentonite layer is only a couple of inches thick. 
Thick enough to seal but not thick enough to push in the wall. You should be 
able to find the patent by searching raduazo (my name) and bentonite. Lots of 
luck getting the figures though. It is easier to order the patents than to 
print them of the PTO web page. If you are really interested I can print you 
a copy next time I am at the Patent Office.
Ed
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<HTML><FONT FACE=arial,helvetica><FONT  SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">        Bentonite waterproofs by swelling and forming a water proof seal but you must be careful. A leaky faucet on one side of a house has been known to push in the wall. I issued a couple of patents on bentonite foundations and you should be able to find the patents at <A HREF="http://164.195.100.11/netahtml/search-adv.htm">http://164.195.100.11/netahtml/search-adv.htm</A>. The only one which I remember used a layer of bentonite against the wall and a layer of sand or stone adjacent the layer of bentonite. The two layers were formed by placing a sheet of plywood parallel to the wall and filling sand on one side and bentonite on the other. The bentonite layer is only a couple of inches thick. Thick enough to seal but not thick enough to push in the wall. You should be able to find the patent by searching raduazo (my name) and bentonite. Lots of luck getting the figures though. It is easier to order the patents than to print them of the PTO web page. If you are really interested I can print you a copy next time I am at the Patent Office.<BR>
Ed</FONT></HTML>

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