Cob Tech info on cob, rammed earth, etc.

[John Schinnerer]

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Aloha,

A little while back someone suggested more scientific research to =
"prove" various code-related aspects of cob, etc.  There is one book I'm =
aware of that has some details on research that has been done:

"Adobe and Rammed Earth Buildings : Design and Construction"
by Paul Graham McHenry
ISBN: 0816511241

Most of the book is about industrial methods of building adobe and =
rammed earth buildings.
There is one chapter that details various research done since the 70's.  =
It is all on rammed earth and/or adobe, not cob, and done in =
southwestern US climates, but should be somewhat relevant.  I must add =
that if read with care the blind spots of the researchers stand out - =
for example, they don't really ever "get it" with regards to the =
difference between insulative value and thermal mass.  They do manage to =
determine some U-values (a technical term for resistance to heat flow) =
for adobe and rammed earth (quite low, of course, as these materials, =
like cob, are not particularly insulative).=20

John Schinnerer
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