[Cob] builders lime and foundations

[michael hollihn]

a few things,
i worked on a SB house last year just outside of town and he, the
owner, an architect from chile originally, did a concrete radiant slab
on grade with the stemwall made of cmu block, two blocks thick and i
believe there was a thermal break between the two rows of cmu and the
slab, does this reduce the amount of cement, i'm not sure?

since it appears that the closest builders lime to british columbia is
ohio, this is not a very bioregional material, i am now faced with
either log walls as infill, or SB with earthen clay plaster as infill,
or rammed earth as infill, i don't believe cob to have enough
insulative value to be practical in this bioregion, any comments would
be appreciated....

-- 
michael hollihn,
british columbia,
www.michaelhollihn.wordpress.com (bioregional timber frames)
www.kettleriverfood.ning.com (building food security in the kettle
River watershed)
'Be the change that you want to see' ghandi