As cited,
C57.12.00 is an IEEE document, and may or may not have be adopted by ANSI. At any rate, I doubt if it would give much guidance on room ventilation.
If you are in a pinch for older standards,
global.ihs.com seems to have good service.
I know this is mutiny, but you might try posting at:
eng-tips.com/gthreadminder.cfm/lev2/11/lev3/47/pid/238 [This message has been edited by Bjarney (edited 08-23-2002).]
