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<div class=Section1>
<p class=MsoNormal><span style='color:#1F497D'>So let’s be clear. There is a
major difference between code compliance (and the methodologies for
demonstrating it) and applying Appendix G for LEED. There are also major
differences is complying with 90.1 for a new building versus an existing one.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>The envelope provisions in
Section 5.5 are not mandatory but are prescriptive. If you are complying with
the code prescriptively then yes you must comply. As I understand it 90.1 will
grant you a prescriptive waiver for the envelope if a renovation does not
affect the system in question. For example, if you replace windows they must
comply for code compliance purposes; if you don’t replace them the code does
not make you do so. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>If applying for LEED
certification with an Appendix G model then you must implement the mandatory
provisions and show enough energy savings. Since the Section 5.5 envelope
provisions are prescriptive you do not have to comply with them. The envelope
in an existing building for the baseline model follows Table G3.1.5(f). The
envelope in the proposed model includes what has been designed and built.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:green'>Marcus Sheffer</span><span style='font-size:12.0pt;font-family:
"Times New Roman","serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:green'>Energy Opportunities, Inc/a 7group Company</span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:#1F497D'>1200 E Camping Area Road, Wellsville, PA 17365</span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:#1F497D'>717-292-2636, </span><span style='font-size:12.0pt;font-family:
"Times New Roman","serif";color:#1F497D'><a href="mailto:sheffer@sevengroup.com"><span
style='font-size:7.5pt;font-family:"Arial","sans-serif"'>sheffer@sevengroup.com</span></a><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:#1F497D'><a href="http://www.sevengroup.com">www.sevengroup.com</a></span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif";
color:#1F497D'> </span><span style='color:#1F497D'><o:p></o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><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"'> Will Mak
[mailto:wmak@epsteinglobal.com] <br>
<b>Sent:</b> Monday, February 28, 2011 9:38 AM<br>
<b>To:</b> Marcus Sheffer; Jackson, Alan; bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> RE: [Bldg-sim] existing envelope CIR<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>From my understanding, to even apply for LEED you need to meet
ASHRAE 90.1-2004/2007 compliance for envelopes, etc?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><b><span style='font-size:12.0pt;color:#C75B12'>William Mak,
LEED Green Associate</span></b><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><br>
</span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:black'>Mechanical Design Engineer</span><span style='font-size:9.0pt;
font-family:"Arial","sans-serif";color:black'><br>
</span><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><br>
</span><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#C75B12'>EPSTEIN</span></b><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><br>
</span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:black'>Architecture<br>
Interiors<br>
Engineering<br>
Construction<br>
<br>
600 West Fulton Street<br>
Chicago, Illinois 60661-1259<br>
<br>
D: (312) 429-8116<br>
F: (312) 559-1217<br>
E:</span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#0070C0'> <a href="mailto:wmak@epsteinglobal.com">wmak@epsteinglobal.com</a></span><span
style='font-size:8.0pt;font-family:"Arial","sans-serif";color:black'><br>
W:</span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#C75B12'> <a href="http://www.epsteinglobal.com/"><span style='color:
#C75B12'>www.epsteinglobal.com</span></a></span><span style='font-size:9.0pt;
font-family:"Arial","sans-serif";color:black'><br>
<br>
</span><span style='font-size:10.0pt;font-family:Webdings;color:#00B050'>þ</span><span
style='font-size:8.0pt;font-family:"Arial","sans-serif";color:black'> Epstein
is a firm believer in sustainability. We ask that you please consider the
environment before printing this e-mail.<o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><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>Marcus
Sheffer<br>
<b>Sent:</b> Monday, February 28, 2011 8:36 AM<br>
<b>To:</b> 'Jackson, Alan'; bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Bldg-sim] existing envelope CIR<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>The CIR is wrong and is in
direct contradiction to Appendix G and the Energy Modeling Guide for LEED.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>I have never seen a reviewer
cite this CIR in a review.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:green'>Marcus Sheffer</span><span style='font-size:12.0pt;font-family:
"Times New Roman","serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:green'>Energy Opportunities, Inc/a 7group Company</span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:#1F497D'>1200 E Camping Area Road, Wellsville, PA 17365</span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:#1F497D'>717-292-2636, </span><span style='font-size:12.0pt;font-family:
"Times New Roman","serif";color:#1F497D'><a href="mailto:sheffer@sevengroup.com"><span
style='font-size:7.5pt;font-family:"Arial","sans-serif"'>sheffer@sevengroup.com</span></a><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:#1F497D'><a href="http://www.sevengroup.com">www.sevengroup.com</a></span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif";
color:#1F497D'> </span><span style='color:#1F497D'><o:p></o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><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>Jackson,
Alan<br>
<b>Sent:</b> Monday, February 28, 2011 9:26 AM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] existing envelope CIR<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Is anyone aware of this CIR being upheld?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:7.5pt;
font-family:"Arial\,Bold";color:#333333'>12/10/2008 - Credit Interpretation
Request<o:p></o:p></span></b></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:7.5pt;
font-family:"Arial","sans-serif";color:#333333'>The team is requesting that you
please verify the meaning of the sentence in ASHRAE 90.1, Table G3.1 regarding
baseline<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:7.5pt;
font-family:"Arial","sans-serif";color:#333333'>envelope requirements for
existing buildings.."For existing building envelopes, the baseline
building design shall reflect existing<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:7.5pt;
font-family:"Arial","sans-serif";color:#333333'>conditions prior to any
revisions that are part of the scope of work being evaluated". Please
confirm if this means that the walls, roof,<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:7.5pt;
font-family:"Arial","sans-serif";color:#333333'>windows, etc for the baseline
is to be modeled to match the existing conditions NOT according to the values
in Table 5.5-1 thru 5.5-<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:7.5pt;
font-family:"Arial","sans-serif";color:#333333'>8.<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:7.5pt;
font-family:"Arial\,Bold";color:#333333'>2/20/2009 - Ruling<o:p></o:p></span></b></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:7.5pt;
font-family:"Arial","sans-serif";color:#333333'>If an existing envelope
component is untouched, the baseline is as that component exists. However, if
an existing component is<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:#333333'>modified, the baseline needs to meet the requirements for
alterations in Section 5.1.3.</span><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>It indicates that when modifying the existing envelope, the
baseline needs to meet the minimum requirements of Chapter 5.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Have users in the group received comments from the reviewers
when trying to model modified envelopes at the existing performance values,
because all language regarding this issue other than the CIR indicate that
existing envelopes get to be modeled at existing performance conditions
regardless of any alterations.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt;line-height:15.0pt'><span
style='font-size:8.0pt;font-family:"Arial Black","sans-serif"'>Alan Jackson,
LEED AP<br>
HVAC Project Engineer / BIM Team Leader</span><span style='font-size:12.0pt;
font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal style='margin-bottom:12.0pt;line-height:15.0pt'><span
style='font-size:8.0pt;font-family:"Arial Black","sans-serif"'>KlingStubbins</span><span
style='font-size:8.0pt;font-family:"Arial","sans-serif"'><br>
2301 Chestnut Street<br>
Philadelphia, Pennsylvania<br>
19103</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal style='line-height:15.0pt'><span style='font-size:8.0pt;
font-family:"Arial","sans-serif"'>P 215.569.2900, ext. 3380<br>
F 215.569.5963<br>
E <a href="mailto:jdoe@klingstubbins.com">ajackson@klingstubbins.com</a><br>
W <a href="http://www.klingstubbins.com/">www.klingstubbins.com</a></span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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