You might like to refer this: <a href="http://www.greenbuildinggenie.com/tips/leed-issues/item/53-ashrae-is-applicable-to-cluster-or-individual-bldg" target="_blank">http://www.greenbuildinggenie.com/tips/leed-issues/item/53-ashrae-is-applicable-to-cluster-or-individual-bldg</a><br>
<br>In my opinion, ASHRAE 90.1 2004 is applicable to individual
buildings, so the baseline is different for different buildings as per
their area and number of stories. I think you should not sum the areas
and then find the baseline HVAC system. Take baseline system for each
building separately and then check the compliance for each building
independently.<br>
<br>For LEED energy points you can follow <span style="font-size: 10pt;">Application Guide for Multiple Buildings and On-Campus Building Projects (AGMBC) available at: <a href="http://www.usgbc.org/ShowFile.aspx?DocumentID=1097" target="_blank">http://www.usgbc.org/ShowFile.aspx?DocumentID=1097</a><br>
<br>It says:<br><br>EA Prerequisite 2: Minimum Energy Performance<br>Requirements : Each building in a project must independently meet the requirements of this prerequisite.<br><br>EA Credit 1: Optimize Energy Performance<br>
<br>Requirements:<br>This credit applies to each building within the
project scope. To receive a single rating for a group of buildings, use
a weighted average for the group of buildings based on their
conditioned square footage, or aggregate the data into one PRM
calculation, so that performance is achieved by buildings of varying
sizes within a certifying group. Each building must still meet EA
Prerequisite 1 and may receive its own rating if that is desired.<br>
<br>Vishal Garg</span><br clear="all">Head, Center for IT in Building Science | IIIT-H | Research University | Gachibowli | Hyderabad 500 032 <br>Website: <a href="http://cbs.iiit.ac.in">cbs.iiit.ac.in</a> | Tel#+91 40 6653 1125| Fax: #+91 40 6653 1413| Mobile # +919949990900| Email: <a href="mailto:vishal@iiit.ac.in">vishal@iiit.ac.in</a><br>
<br><br><div class="gmail_quote">On Wed, Oct 28, 2009 at 3:34 AM, Scott Haag <span dir="ltr"><<a href="mailto:ScottHaag@auseea.com">ScottHaag@auseea.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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<div>All;</div>
<div> </div>
<div>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?</div>
<div> </div>
<div>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.</div>
<div> </div>
<div>I have tried searching old posts with no success. Thanks for your help.</div>
<div> </div><font color="#888888">
<div>Scott</div></font></div>
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