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<p class=MsoNormal><span style='color:black'>A few things to consider:<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'>Are the buildings part of the same
project or building permit? – if separate then 90.1 would apply to them
individually. This is regardless of grouping them into one LEED project
for instance.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'>The definition of “building”
in 90.1-2004 is “a structure wholly or partially enclosed within exterior
walls…” – so even if combined into one building permit, these
three might be treated as separate buildings for system selection purposes,
especially if the predominant usage for the three is different based on
Exception (a) to G3.1.1 (assuming you are using the Performance Rating
Method and not ECB since you are discussing the building sizes).<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'>Hope this helps, good luck!<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'>David<o:p></o:p></span></p>
<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:11.0pt;font-family:"Tahoma","sans-serif";color:black'>____________________________________________________________________________________________________________________<o:p></o:p></span></p>
<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:gray'>David
Eldridge, PE<o:p></o:p></span></p>
<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:gray'>LEED®
AP, HBDP<o:p></o:p></span></p>
<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:11.0pt;font-family:"Tahoma","sans-serif";color:black'><br>
</span><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:#365F91'>Grumman/Butkus Associates</span></b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif";color:gray'> | </span><span style='font-size:
10.0pt;font-family:"Tahoma","sans-serif";color:#8DB3E2'>820 Davis Street, STE
300 | Evanston, IL 60201 | Ph: (847) 328-3555, ext 224 | Fax: (847) 328-4550</span><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:gray'><o:p></o:p></span></p>
<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>http://www.grummanbutkus.com<o:p></o:p></span></p>
<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:gray'>Energy
Consultants and Design Engineers</span><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:black'><br>
</span><span style='font-size:11.0pt;font-family:"Tahoma","sans-serif";
color:black'>____________________________________________________________________________________________________________________<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
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<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Scott Haag<br>
<b>Sent:</b> Tuesday, October 27, 2009 5:05 PM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] Multiple Buildings<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>All;<o:p></o:p></span></p>
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<div>
<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>I have a project
with multiple buildings on one site to model. When determining the
correct baseline HVAC system, should I do this on an individual building basis,
or use the same system for all buildings and base it on the summation of all of
the buildings' areas?<o:p></o:p></span></p>
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<div>
<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>The
first building is 3-stories and 190,000 square feet, the second building
is 1 story and 44,000 square feet, and the third building is 1 story and 8,000
square feet.<o:p></o:p></span></p>
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<div>
<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>I have tried
searching old posts with no success. Thanks for your help.<o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0in;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Scott<o:p></o:p></span></p>
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