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

[John Swearingen]

Yeah, that's what I was tryin' to say except for how he spells "vapor"....

John "Theoretical Dew" Swearingen


On Wed, Jun 17, 2009 at 11:20 AM, RT <ArchiLogic at yahoo.ca> wrote:

> On Wed, 17 Jun 2009, a dewey-eyed,slip-jointed Skillful Meany opined:
>
>  My notion is that condensation will not occur at a theoreticaldew point
>> location in the wall, but will happen on the back sideof the exterior
>> plaster.
>>
>
>
> I'd venture that vapour in the wall will in fact condense at the dew point
> of the wall's thermal profile  ... but noticeable accumulations of liquid
> will be found at the backside of the plaster.
>
> I'd also venture that condensation that happens at the dew points in the
> straw would be sucked up by the straw and hence not be noticeable by visual
> inspection. That condensed moisture sucked-up by the straw may or may not be
> released later, depending upon subsequent temperature & humidity conditions.
>
> As for metal framing members being magnets for condensation, thereby posing
> too much of a risk to use with straw, I'd venture that that would be the
> case if and only if the air barrier was so shoddily done so as to be
> ineffective.  If that's the case, then moisture damage as a result of bulk
> moisture transport via air leakage would be a problem even if there were no
> metal framing components embedded in the straw.
>
>
>
>
> --
> === * ===
> Rob Tom
> Kanata, Ontario, Canada
> < A r c h i L o g i c  at  ChaffY a h o o  dot  C a >
> (manually winnow the chaff from my edress in your reply)
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-- 
John Swearingen

Skillful Means
www.skillful-means.com
blog: https://skillfulmeansdesign.wordpress.com
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