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<DIV><SPAN class=484370800-03122008><FONT face=Arial size=2>Dear Bldg
Sim</FONT></SPAN></DIV>
<DIV><SPAN class=484370800-03122008><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=484370800-03122008><FONT face=Arial size=2>I have a big
box warehouse project that is primarily unconditioned with the exception of
some conditioned areas along the north and south perimeters. I have 2
concerns, pertaining to LEED EAc1 (NC2.2):</FONT></SPAN></DIV>
<DIV><SPAN class=484370800-03122008><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=484370800-03122008><FONT face=Arial size=2>1. The
warehouse is currently existing but with no conditioned spaces. The
envelope is being completely revamped and conditioned spaces are being
added. The overall footprint is also changing slightly.
According to Ashrae 90.1-2004,Table G3.1, paragraph 5F, "For existing building
envelopes, the baseline building design shall reflect existing conditions prior
to any revisions that are part of the scope of work being evaluated." Does
this mean that the 40% WWR and Building Envelope requirements from Tables 5.5 do
not apply? How do I approach the section of the existing building
that is being knocked down? </FONT></SPAN></DIV>
<DIV><SPAN class=484370800-03122008><FONT face=Arial size=2></FONT></SPAN><SPAN
class=484370800-03122008><FONT face=Arial size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=484370800-03122008><FONT face=Arial size=2>2. In my
Proposed model: How should I model the interior walls separating the conditioned
space from the unconditioned space? <SPAN class=484370800-03122008><FONT
face=Arial size=2> My problem with modeling 8" CMUs is that I come up with a
large number of loads not met due to the loads and solar heat gain from
the unconditioned area. Would it be kosher to model the
interior walls as adiabatic in both the baseline and proposed
models?</FONT></SPAN></FONT></SPAN></DIV>
<DIV><SPAN class=484370800-03122008><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=484370800-03122008><FONT face=Arial size=2>Any insight or
experiences with this would be greatly appreciated.</FONT></SPAN></DIV>
<DIV><SPAN class=484370800-03122008><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=484370800-03122008><FONT face=Arial size=2>Thank
you!</FONT></SPAN></DIV>
<DIV><SPAN class=484370800-03122008><FONT face=Arial size=2><FONT size=2>
<P>Linda Lam, LEED® AP</P>
<P>WSP Flack + Kurtz</P>
<P>Direct: 415.402.5813</FONT></FONT></SPAN>
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