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<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">
<DIV>Probably what’s at play here in ComCheck is that your envelope met the
requirements of Section 5.6 (the building Envelope Trade-Off Option, by virtue
of meeting the envelope performance factor in Appendix C). Section 5.6
does not require that you comply to Section 5.5 (where the fenestration
requirements are listed in Tables 5.5-xx.)</DIV>
<DIV> </DIV>
<DIV>================================</DIV>
<DIV>Larry Degelman, P.E.</DIV>
<DIV>Professor Emeritus of Architecture</DIV>
<DIV>Texas A&M University</DIV>
<DIV>================================</DIV>
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<DIV> </DIV>
<DIV style="BACKGROUND: #f5f5f5">
<DIV style="font-color: black"><B>From:</B> <A
title=bldg-sim@lists.onebuilding.org>Madhav Munshi via Bldg-sim</A> </DIV>
<DIV><B>Sent:</B> Thursday, March 09, 2017 10:02 AM</DIV>
<DIV><B>To:</B> <A
title=bldg-sim@lists.onebuilding.org>bldg-sim@lists.onebuilding.org</A> </DIV>
<DIV><B>Subject:</B> [Bldg-sim] Comcheck using ASHRAE
90.1-2010</DIV></DIV></DIV>
<DIV> </DIV></DIV>
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<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif'>Hi
All,<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif'><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif'>I was checking a
Comcheck compliance sheet for a project and the project was meeting compliance
for ASHRAE 90.1-2010 using 60% WWR. I was really surprised by this and ran
Comcheck myself (version 4.0.5.5) and found that I could get the envelope to
pass with any amount of glazing as long as the total envelope UA was below the
budget UA – regardless of glazing area. <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif'><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif'>I tried to see if I
could do the same thing with IECC 2012 and it gave me an error but the program
popped up a screen that told me to use ASHRAE 90.1-2010 because it does not have
a max WWR limitation. See screenshots 1 & 2. <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif'><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif'>Is this really true? I
was under the impression that we have to go with a performance route if the
glazing exceeds 40% WWR? But that does not seem to be the case.
<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif'><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif'>Appreciate the groups
thoughts, thanks<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif'><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif'>Madhav<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif'><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif'><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: black'><IMG
id=Picture_x0020_1 style="HEIGHT: 1.406in; WIDTH: 1.364in"
alt=cid:image001.png@01CA94FC.558724B0
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<P class=MsoNormal><SPAN
style='FONT-SIZE: 8.5pt; FONT-FAMILY: "Futura Bk"; COLOR: black'><o:p></o:p></SPAN> </P>
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 9pt; FONT-FAMILY: futura; COLOR: #5e88a1">MADHAV MUNSHI
</SPAN></B><SPAN style="FONT-SIZE: 8.5pt; FONT-FAMILY: futura; COLOR: #404040">|
BEMP, LEED AP BD+C</SPAN><SPAN
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<P class=MsoNormal><SPAN
style="FONT-SIZE: 8.5pt; FONT-FAMILY: futura; COLOR: #404040">Kohler Ronan, LLC
| </SPAN><SPAN style="COLOR: black"><A href="http://www.kohlerronan.com/"><SPAN
style="FONT-SIZE: 8.5pt; COLOR: blue">www.kohlerronan.com</SPAN></A></SPAN><SPAN
style='FONT-SIZE: 9pt; FONT-FAMILY: "Helvetica",sans-serif; COLOR: black'><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 8pt; COLOR: black"><A><SPAN
style="COLOR: blue">mmunshi@kohlerronan.com</SPAN></A></SPAN><SPAN
style="FONT-SIZE: 8pt; COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 8pt; COLOR: black"><o:p></o:p></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 8.5pt; FONT-FAMILY: futura; COLOR: #404040">171 Madison
Avenue, New York, NY 10016</SPAN><SPAN
style='FONT-SIZE: 9pt; FONT-FAMILY: "Helvetica",sans-serif'><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 8.5pt; FONT-FAMILY: futura; COLOR: #404040">212.695.2422
F 212.695.2423</SPAN><SPAN
style="FONT-SIZE: 8.5pt; FONT-FAMILY: futura; COLOR: #404040"><o:p></o:p></SPAN></P>
<P class=MsoNormal><B><SPAN
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<P class=MsoNormal><SPAN
style="FONT-SIZE: 8.5pt; FONT-FAMILY: futura; COLOR: #404040">93 Lake Avenue,
Danbury, CT 06810</SPAN><SPAN
style='FONT-SIZE: 9pt; FONT-FAMILY: "Helvetica",sans-serif'><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 8.5pt; FONT-FAMILY: futura; COLOR: #404040">203.778.1017
F 203.778.1018</SPAN><SPAN
style='FONT-SIZE: 9pt; FONT-FAMILY: "Helvetica",sans-serif'><o:p></o:p></SPAN></P>
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style="COLOR: #1f497d"><o:p></o:p></SPAN></P>
<P class=MsoNormal><A
href="https://www.facebook.com/Kohler-Ronan-LLC-Consulting-Engineers-146070618769600/"><SPAN
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height=29></SPAN></A><SPAN style="COLOR: black">
</SPAN><A href="https://twitter.com/KohlerRonan"><SPAN
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height=29></SPAN></A><SPAN style="COLOR: black"> <A
href="https://www.linkedin.com/company/1672806?trk=hp-feed-company-name"><SPAN
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style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 8.5pt; FONT-FAMILY: futura; COLOR: #404040">Please consider
the environment before printing this e-mail.</SPAN><SPAN
style="COLOR: black"><o:p></o:p></SPAN></P>
<P class=MsoNormal><o:p></o:p> </P></DIV>
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