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<DIV><SPAN class=007141221-21102008><FONT face=Arial size=2>I'm working on a
project where I am pursuing LEED EAc1 for an existing building. As I
understand it from the LEED-NC reference guide, as well as from some snippets of
90.1, I actually model the baseline building as is currently exists. The
reference guide says:</FONT></SPAN></DIV>
<DIV><SPAN class=007141221-21102008><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=007141221-21102008><FONT face=Arial size=2>"For existing
buildings that are being renovated, the building envelope design parameters for
the Baseline Design should be modeled using the existing (pre-retrofit) building
envelope thermal parameters rather than the ASHRAE 90.1 prescriptive building
envelope requirements for the specified climate."</FONT></SPAN></DIV>
<DIV><SPAN class=007141221-21102008><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=007141221-21102008><FONT face=Arial size=2>So I'm using actual
window areas, actual insulation values, etc.</FONT></SPAN></DIV>
<DIV><SPAN class=007141221-21102008><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=007141221-21102008><FONT face=Arial size=2>My question
is: if I'm using this exception, do I also no longer have to do a
simulation at the four different azimuth required by the LEED EAc1
template?</FONT></SPAN></DIV>
<DIV><SPAN class=007141221-21102008><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=007141221-21102008><FONT face=Arial size=2>I find 90.1, as well
as the user's manual, fairly lacking in describing how to apply Appendix G to
existing buildings in general....</FONT></SPAN></DIV>
<DIV><SPAN class=007141221-21102008><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=007141221-21102008><FONT face=Arial size=2>Thanks in
advance!</FONT></SPAN></DIV>
<DIV> </DIV>
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