Cob: pipes under the floor

[Amanda Peck]

Have y'all seen this book?

"http://www.amazon.com/exec/obidos/tg/detail/-/0930031970/qid=1043803138/sr=1-3/ref=sr_1_3/103-6977152-4198211?v=glance&s=books"

The Passive Solar house by James Kachadorian.  His plan, which may or may 
not be in the stuff you can see in the sample pages, is to underlay the 
whole floor with concrete blocks placed so that you have lots and lots of 
pipes through the floor, with stuff that looks like furnace grates on the 
back wall.  He swears "it saves you money" but that's only because you 
aren't paying someone to build you a basement, as I recall.

You could presumably use block seconds, but if you didn't want to put
a concrete floor how would you do it?  My guess is that ramming the earth 
above it would do SERIOUS damage to those blocks laid the less strong way.

Cat here (snipped), what diameter terra cotta pipe are you using and how far 
apart?  Will you be using cob as your floor, tile, wood?

I want to use hot air thru terra cotta tubes set in sand  with a cob floor 
covered with granite tile?  What do you think? ?









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