Hi group,

I have a building with 8-foot concrete floor slab (50 feet below grade), 3- to 6-foot below-grade exterior walls, and 3- to 8-foot interior partitions in the sub-grade shells.

I wondered if anyone had a quick hint they could give me, particularly in light of LEED 2009 review that will happen. The calculus is done, and the transfer function time constant is so huge that the inner surface temperature of the walls just isn?t going to vary much. Ground temperature is 60?F all year and doesn?t vary. After they are poured, it?ll take 8 to 10 months for the 8-foot walls to cool down to indoor (conditioned) ambient temperature just from the heat of curing.

Any comments or experience will be most appreciated.

Thanks,

Dave

David R. Weigel, PE