<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman,new york,times,serif;font-size:10pt">Thanks Bill, the comment you received is encouraging.<br><div> </div>Paul Diglio, CEM, CBCP<br><br><div>87 Fairmont Avenue<br>New Haven, CT 06513<br>203-415-0082</div><br><br><div><span><a target="_blank" href="http://www.pdigliollc.com">www.pdigliollc.com</a></span><div><br></div><div style="font-family:times new roman, new york, times, serif;font-size:10pt"><br><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><font face="Tahoma" size="2"><hr size="1"><b><span style="font-weight: bold;">From:</span></b> "Bishop, Bill" <bbishop@pathfinder-ea.com><br><b><span style="font-weight: bold;">To:</span></b> Paul Diglio <paul.diglio@sbcglobal.net>; "equest-users@lists.onebuilding.org" <equest-users@lists.onebuilding.org><br><b><span style="font-weight:
bold;">Sent:</span></b> Mon, April 15, 2013 2:45:18 PM<br><b><span style="font-weight: bold;">Subject:</span></b> RE: [Equest-users] LEED Fenestration Modeling Question<br></font><br>
<style><!--
_filtered {font-family:"Cambria Math";panose-1:2 4 5 3 5 4 6 3 2 4;}
_filtered {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;}
_filtered {font-family:Tahoma;panose-1:2 11 6 4 3 5 4 4 2 4;}
_filtered {font-family:"Franklin Gothic Medium";panose-1:2 11 6 3 2 1 2 2 2 4;}
_filtered {font-family:Webdings;panose-1:5 3 1 2 1 5 9 6 7 3;}
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman", "serif";}
a:link, span.MsoHyperlink
{color:blue;text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{color:purple;text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{margin:0in;margin-bottom:.0001pt;font-size:8.0pt;font-family:"Tahoma", "sans-serif";}
span.EmailStyle17
{font-family:"Calibri", "sans-serif";color:#1F497D;}
span.BalloonTextChar
{font-family:"Tahoma", "sans-serif";}
.MsoChpDefault
{font-size:10.0pt;}
_filtered {margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{}
--></style>
<div class="WordSection1">
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D;">Paul,</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D;"> </span></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></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D;"><img id="Picture_x0020_1" src="cid:1.3056278559@web181103.mail.ne1.yahoo.com" height="154" width="682"></span><span style="font-size:11.0pt;color:#1F497D;"></span></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></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></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D;"> </span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D;">Regards,</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D;">Bill</span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D;"> </span></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></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:black;">Senior Energy Engineer</span></p>
<p class="MsoNormal"><span style="font-size:5.0pt;color:black;"> </span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#1F497D;">134 South Fitzhugh Street</span><span style="font-size:9.0pt;color:#1F497D;">
</span><span style="font-size:9.0pt;color:#1F497D;">Rochester, NY 14608</span></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><span style="font-size:9.0pt;color:black;"></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D;"><a rel="nofollow" ymailto="mailto:wbishop@pathfinder-ea.com" target="_blank" href="mailto:wbishop@pathfinder-ea.com"><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 rel="nofollow" target="_blank" href="http://www.pathfinder-ea.com/"><span style="font-size:9.0pt;">www.pathfinder-ea.com</span></a></span><span style="font-size:9.0pt;color:black;"></span></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><span style="font-size:11.0pt;color:#1F497D;"></span></p>
</div>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D;"> </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;">From:</span></b><span style="font-size:10.0pt;"> 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 2:34 PM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] LEED Fenestration Modeling Question</span></p>
</div>
</div>
<p class="MsoNormal"> </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></p>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;color:black;"> </span></p>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt;"><span style="font-size:10.0pt;color:black;">Paul Diglio, CEM, CBCP</span></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></p>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt;"><span style="font-size:10.0pt;color:black;"> </span></p>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;color:black;"><a rel="nofollow" target="_blank" href="http://www.pdigliollc.com">www.pdigliollc.com</a></span></p>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;color:black;"> </span></p>
</div>
</div>
</div>
</div>
</div></div></div>
</div></body></html>