[Cob] building

[Jill Hogan]

Thanks Katherine I like and will try it
Regards Jill

On 2011/06/09 03:48 PM, Katherine K Hebenstreit wrote:
> Jill has a valid point on the old cob buildings and no posts.   Thing 
> is, building and code inspectors are animals of the construction 
> industry. - Long history considering industrial changes: 2x4's are no 
> long 2" by 4" and once upon a time were hard wood (studs).   In short 
> they are subject to the industry standards and building techniques.
>
> Most will insist on poles.   In such a case - to lesson the cracking 
> away -  I'd drill some holes about 2" deep and 1 1/2" wide so that you 
> can 'stuff' the cob into the holes.  (Just as you would when building 
> the wall up and pushing holes into your last batch of the day, so even 
> if it dries out a bit, your next batch you push into so that when 
> completely dry they are joined together.   A bit of gouging (deep 
> scratches) into the post may not be remiss either - a little something 
> 'rough' for the cob to grab onto.
>
>
>
> Katherine
>
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>
> --- On *Thu, 6/9/11, Jill Hogan /<jill.hogan at mat.org.za>/* wrote:
>
>
>     From: Jill Hogan <jill.hogan at mat.org.za>
>     Subject: Re: [Cob] building
>     To: coblist at deatech.com
>     Date: Thursday, June 9, 2011, 5:06 AM
>
>     Hi Damon the problem with that we have found is that the post
>     expand and contract in the wall and crack the cob/plaster over the
>     posts. I prefer to educated the building inspectors to the hundred
>     of years old houses, in say Devon and Cornwall in England, with no
>     posts in their walls and if that is not an example of duribility
>     heaven alone knows what is. The thick walls might not let the sun
>     heat in but they certainly hold the heat generated from my
>     fireplace and my wood burning stove, keeping the house warmer
>     through winter, with out the use of electricity, than any other
>     house I know
>     Jill
>
>     On 2011/06/08 10:25 PM, Damon Howell wrote:
>     > What say y'all about holding the roof up on posts and cobbing
>     around the posts? Do you think that kind of plan would get
>     approval of building officials? I've heard (I think it may have
>     been on here) that post-and-beam structures with "cob infill" have
>     been approved in the past. One of the things I would worry about
>     if I didn't know about cob would be its ability to hold up the
>     roof, 1, and it's insulation properties. We've mentioned that a
>     few times and it's not passing on that front. If I could make the
>     case of the U-value being great, therefore the R-value can lack a
>     little, they may say "ok." Otherwise I'll be building a 2 ft.
>     thick wall that would never heat up with the sun.
>     > Damon in Georgia, USA
>     >
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>
>     -- *Jill Hogan*
>     McGregor Alternative Technology Centre "MAT"
>     PO Box 365
>     McGregor
>     6708
>
>     www.mat.org.za <http://www.mat.org.za>
>     Phone: 023 625 1533
>
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>
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-- 
*Jill Hogan*
McGregor Alternative Technology Centre "MAT"
PO Box 365
McGregor
6708

www.mat.org.za <http://www.mat.org.za>
Phone: 023 625 1533

Signature

"Be the change you wish to see" Mohandas Ghandi

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