[GSBN] Decrement factor of SB walls

martin hammer mfhammer at pacbell.net
Mon Nov 28 20:43:48 CST 2011


Thanks very much Jorge, David, Laura, and Bohdan,

Very helpful.  I will study it all further.

Decrementally yours,

Martin


On 11/28/11 2:55 PM, "David Eisenberg" <strawnet at aol.com> wrote:

> Ken, Polly Cooper and Jennifer Rennick's chapter that John mention's in that
> Wiley book - Alternative Construction: Contemporary Natural Building Methods,
> has a lot of information on this though they don't use the term "decrement."
> They talk about this issue with straw and other types of wall systems and go
> into considerable detail. I would get in touch with them and see what they
> have to say. 
> 
> David Eisenberg
>  
>  
> -----Original Message-----
> From: Laura Bartels <laura at greenweaverinc.com>
> To: Global Straw Building Network <GSBN at sustainablesources.com>
> Sent: Mon, Nov 28, 2011 3:40 pm
> Subject: Re: [GSBN] Decrement factor of SB walls
> 
> Hi Martin, 
> Without going back to the details, I could be mistaken, but it seems that a
> study by Ken Haggard a while back addressed this or similar properties. I
> found reference in a GSBN email from '07- see below. Is this the same metric?
> 
> Laura
> 
> 
> John,
> 
> There is that chapter from Ken Haggard and Polly Cooper on Natural
> Conditioning in the book Alternative Construction where they look at
> this. I was looking at it just recently for some curriculum development.
> 
> Laura
> 
> John Swearingen wrote:
> 
>> Very interesting paper, and well written.  Some time ago I remember hearing
>> someone toss out some similar observations about thermal storage, that on a
>> diurnal cycle, plaster is activated to a depth of about 2-3 inches
>> (5cm -7.5cm).  I have always figured that the exceptional thermal
>> performance of
>> straw bale buildings is not due solely to the high R-value.  The broad
>> thermal mass of the plastered walls, readily available to indoor air for
>> heat exchange, modulates temperatures like my pink Cadillac modulates bumps
>> in the road.
>> 
>> Does anyone know of research and measurements of short and medium thermal
>> storage in walls?
>> 
>> John "Diurnally Yours" Swearingen
> 
> 
> 
> Laura Bartels
> GreenWeaver Inc.
> 520 S. Third St., Suite 5
> Carbondale, CO 81623
> 970-379-6779
> www.greenweaverinc.com <http://www.greenweaverinc.com>
> 
> 
> 
> 
> 
> We've moved to the Third St. Center
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> A community place promoting inspiration, sustainability and creative exchange
>> 
>> 
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