[Cob] psi testing

[Janet Standeford]

  Hi Ed,
Yes. This is code that I had to pass for adobe since they don't have cob 
codes here.

The important thing is that it passed without adding anything but straw 
to my sandy clay, which by the way only shrank an eighth of an inch in 
each direction.

This was 8 of the cylinders full of dirt and 8 small handfuls of loose 
straw. I'll have to figure out actual measurements on this next.

Janet Standeford OR
www.buildingnaturally.info (Owned by you)
A resource for healthy homes.



>     For my structure 350 psi. would give me an 11200% safety margin. 
> Does that sound right to you? I don't usually bother with such 
> calculations because I assume some future owner will do something 
> really stupid like running a lawn sprinkler against the wall. Then of 
> course all bets are off.
>     Is this a code requirement for earth walls? It seems rather 
> arbitrary to apply something like this to cob unless you are pushing 
> limits which should not be pushed.
>
>
>
> Ed
>
>