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<DIV dir=ltr align=left><SPAN class=998544800-13022008><FONT face=Arial
color=#0000ff>Timothy,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=998544800-13022008><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=998544800-13022008><FONT face=Arial
color=#0000ff>Table of the 10-5A (page 65 of the pdf, nominal page 49 of the
code) of the Washington State Energy Code (link below) provides a pretty
handy table for realistic U-values for various metal frame constructions. I'm
not sure your local municipality would accept it, but I use these tables
frequently to get U-values for various construction types. Depending on
your frame spacing, it looks like a U-value of around 0.1.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=998544800-13022008><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=998544800-13022008><FONT face=Arial
color=#0000ff><A
href="http://www.energy.wsu.edu/documents/code/wsec2006/wsec_2006.pdf">http://www.energy.wsu.edu/documents/code/wsec2006/wsec_2006.pdf</A></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=998544800-13022008><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=998544800-13022008><FONT face=Arial
color=#0000ff>Sincerely,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=998544800-13022008><FONT face=Arial
color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=998544800-13022008><FONT face=Arial
color=#0000ff>Nathan Miller</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=998544800-13022008><FONT face=Arial
color=#0000ff>Stantec- Seattle</FONT></SPAN></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma><B>From:</B> bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <B>On Behalf Of </B>Howe,
Timothy<BR><B>Sent:</B> Tuesday, February 12, 2008 10:07 AM<BR><B>To:</B>
bldg-sim@lists.onebuilding.org<BR><B>Subject:</B> [Bldg-sim] Metal Building R-19
cavity insulation U-factor<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV dir=ltr align=left><SPAN class=352080418-12022008>I have a metal building
wall construction with R-19 insulation between the girts.</SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=352080418-12022008></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=352080418-12022008>Now in ASHRAE 90.1-2004
Appendix A, Table A3.2 the single layer of mineral fiber only goes up to
R-13.</SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=352080418-12022008></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=352080418-12022008>Any suggestion on how to
determine the U-Factor for this wall?</SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=352080418-12022008></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=352080418-12022008>Thanks.</SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=352080418-12022008></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=352080418-12022008>Tim.</SPAN></DIV>
<DIV dir=ltr align=left> </DIV>
<DIV dir=ltr align=left> </DIV>
<DIV> </DIV>
<DIV style="FONT-SIZE: 9pt; FONT-FAMILY: Arial" align=left><B>Timothy
Howe</B><BR>Mechanical Engineer<BR>Stantec<BR></DIV></BODY></HTML>