[Cob] plastic jugs in walls?

[john fordice]

Tys,
I'll venture to say (without really being able to prove it) that it  
will weaken the wall.  A cob wall gets it  strength by being thick.   
A structure resists forces acting on it by being made as continuous  
as possible.  Making a void in the wall will create a weak spot which  
compromises the continuity of the structure.    I would not do  
anything which creates voids in the cob based on this reasoning.
john fordice

On Dec 10, 2009, at 10:07 AM, Tys Sniffen wrote:

> So, as my walls get up over 7 feet high, I'm starting to remember  
> how lower
> down, when I had them laying around, I would toss in the occasional  
> urbanite
> chunk to take up some space.
>
> Now I'm starting to think about tossing in some one gallon plastic  
> jugs
> (vinegar jugs, that are slightly thicker plastic than the common 1  
> gal milk
> jug) again, to take up space, but also I'm thinking having a void  
> in the
> wall that size could insulation in a way, and, of course, would  
> make my tall
> parts a bit lighter.
>
> Does that sound like a bad idea to anyone?
>
> Tys
>
>
>
>
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