[GSBN] Use of and protection - steel columns in bale walls

[Graeme North]

Interesting stir up - be interested to hear what the problems you  
refer to were John

and my annotation to John's notion is this -


My notion is that condensation will not occur at a theoretical dew  
point location in the wall, UNLESS THERE IS AN IMPERVIOUS MATERIAL  
THERE FOR IT TO FORM ON SUCH AS STEEL OR CONCRETE - but will happen  
on the back side of the exterior plaster.



Graeme
Graeme North Architects
49 Matthew Road
RD1
Warkworth
tel/fax +64 (0)9 4259305

graeme at ecodesign.co.nz
www.ecodesign.co.nz


On 17/06/2009, at 2:44 PM, John Swearingen wrote:

> We've only had problems a couple of times, on sides exposed to very  
> hot sunlight, and rather thick steel.
>
> I don't think condensation presents a significant risk, as the  
> steel's temperature will be very close to the temperature of the  
> surrounding straw.  My notion is that condensation will not occur  
> at a theoretical dew point location in the wall, but will happen on  
> the back side of the exterior plaster.
>
> John "Dewey Eye" Swearingen

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