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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Good morning, Paul,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>It appears you are confusing the prescriptive envelope requirements with the mandatory provisions. The envelope minimum performance can be violated when using an energy model to show overall building performance. Hope this helps!<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#3D9959'>Cam Fitzgerald<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#3D9959'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#3D9959'>Energy Opportunities/a 7group company<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","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"'> equest-users-bounces@lists.onebuilding.org [mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Paul Diglio<br><b>Sent:</b> Monday, April 15, 2013 3:34 PM<br><b>To:</b> Bishop, Bill; equest-users@lists.onebuilding.org<br><b>Subject:</b> Re: [Equest-users] LEED Fenestration Modeling Question<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal><span style='font-size:10.0pt'>Thanks Bill, the comment you received is encouraging.<o:p></o:p></span></p><div><p class=MsoNormal><span style='font-size:10.0pt'> <o:p></o:p></span></p></div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt'>Paul Diglio, CEM, CBCP<o:p></o:p></span></p><div><p class=MsoNormal><span style='font-size:10.0pt'>87 Fairmont Avenue<br>New Haven, CT 06513<br>203-415-0082<o:p></o:p></span></p></div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='font-size:10.0pt'><a href="http://www.pdigliollc.com" target="_blank">www.pdigliollc.com</a><o:p></o:p></span></p><div><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p><div><div class=MsoNormal align=center style='text-align:center'><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><hr size=1 width="100%" align=center></span></div><p class=MsoNormal style='margin-bottom:12.0pt'><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"'> "Bishop, Bill" <<a href="mailto:bbishop@pathfinder-ea.com">bbishop@pathfinder-ea.com</a>><br><b>To:</b> Paul Diglio <<a href="mailto:paul.diglio@sbcglobal.net">paul.diglio@sbcglobal.net</a>>; "<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>" <<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>><br><b>Sent:</b> Mon, April 15, 2013 2:45:18 PM<br><b>Subject:</b> RE: [Equest-users] LEED Fenestration Modeling Question</span><o:p></o:p></p><div><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'>Paul,</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'>I recently received the following comment in a LEED review for a LEED-NC v2009 project:</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'><img border=0 width=682 height=154 id="Picture_x0020_1" src="cid:image001.png@01CE3A8D.34FBF3D0"></span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'>This implies that Window v6.3 calculations are acceptable in lieu of NFRC ratings. The comment does not exclude the modeler from performing the calculation.</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'>Of course, I have no idea if this is boilerplate language or if LEED reviewers have discretion here. It is also possible that requirements will become stricter for newer projects.</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'>Regards,</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'>Bill</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p><div><p class=MsoNormal><b><span style='font-size:10.0pt;color:black'>William Bishop, PE, BEMP, LEED AP </span></b><b><span style='font-size:10.0pt;color:#006600'>|</span></b><b><span style='font-size:10.0pt;color:black'> Pathfinder Engineers & Architects LLP</span></b><o:p></o:p></p><p class=MsoNormal><span style='font-size:9.0pt;color:black'>Senior Energy Engineer</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:5.0pt;color:black'> </span><o:p></o:p></p><p class=MsoNormal><span style='font-size:9.0pt;color:#1F497D'>134 South Fitzhugh Street Rochester, NY 14608</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:9.0pt;color:#1F497D'>T: (585) 325-6004 </span><span style='font-size:9.0pt;color:black'>Ext. 114</span><span style='color:#1F497D'> </span><span style='font-size:9.0pt;color:#1F497D'>F: (585) 325-6005</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'><a href="mailto:wbishop@pathfinder-ea.com" target="_blank"><span style='font-size:9.0pt'>bbishop@pathfinder-ea.com</span></a></span><span style='font-size:9.0pt;color:black'> </span><span style='font-size:11.0pt;color:#1F497D'><a href="http://www.pathfinder-ea.com/" target="_blank"><span style='font-size:9.0pt'>www.pathfinder-ea.com</span></a></span><o:p></o:p></p><p class=MsoNormal><span style='font-size:14.0pt;font-family:Webdings;color:green'>P</span><span style='font-size:14.0pt;color:green'> </span><span style='font-size:7.5pt;color:green'>Sustainability – the forest AND the trees.</span><span style='font-size:18.0pt;font-family:Webdings;color:green'> </span><span style='font-size:14.0pt;font-family:Webdings;color:green'>P</span><span style='font-size:14.0pt;color:green'> </span><o:p></o:p></p></div><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></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'>From:</span></b><span style='font-size:10.0pt'> <a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a> [<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>Paul Diglio<br><b>Sent:</b> Monday, April 15, 2013 2:34 PM<br><b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br><b>Subject:</b> [Equest-users] LEED Fenestration Modeling Question</span><o:p></o:p></p></div></div><p class=MsoNormal> <o:p></o:p></p><div><p class=MsoNormal><span style='font-size:10.0pt;color:black'>Folks:<br><br>I am a bit confused when modeling unrated vertical fenestration for the proposed model. 90.1 states that we need to use the values determined in accordance with NFRC 100 or we can use the data in Table A8.2 for vertical fenestration per Exception b, Section 5.8.2.4.<br><br>If so, the values in Table A8.2 exceed the maximum allowed fenestration u-values listed in Table 5.5-5 (my zone), so will this not disqualify the proposed building model?<br><br>I have often found it impossible to get the architect to supply the NFRC assembly ratings of the glazing and field erected curtain-wall systems.<br><br>I have used the LBNL Window 6.3 program to calculate the vertical fenestration ratings, but 90.1 Section 5.8.8.2 states that the fenestration product shall have a permanently installed nameplate or the manufacturer shall provide a signed and dated certification for the installed fenestration.<br><br>I don't see any wiggle-room where 90.1 allows the modeler to calculate the NFRC rating of vertical fenestration. <br><br>Saying that, I have submitted projects where I calculated the fenestration assembly u-values without any kick-back from the GBCI.<br><br>I am concerned that the reviewers will push this issue since it is now clearly defined on the new Section 1.4 Table and if I submit my own ratings I will end up remodeling the project and/or the proposed building envelope will be rejected since it doesn't meet the mandatory requirements of Section 5.4.<br><br>Any thoughts?<br><br>Thank you,</span><o:p></o:p></p><div><p class=MsoNormal><span style='font-size:10.0pt;color:black'> </span><o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;color:black'>Paul Diglio, CEM, CBCP</span><o:p></o:p></p><div><p class=MsoNormal><span style='font-size:10.0pt;color:black'>87 Fairmont Avenue<br>New Haven, CT 06513<br>203-415-0082</span><o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;color:black'> </span><o:p></o:p></p><div><p class=MsoNormal><span style='font-size:10.0pt;color:black'><a href="http://www.pdigliollc.com" target="_blank">www.pdigliollc.com</a></span><o:p></o:p></p><div><p class=MsoNormal><span style='font-size:10.0pt;color:black'> </span><o:p></o:p></p></div></div></div></div></div></div></div></div></div></body></html>