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<DIV><SPAN class=534115216-30082012><FONT color=#0000ff size=2
face=Arial>Tim,</FONT></SPAN></DIV>
<DIV><SPAN class=534115216-30082012><FONT color=#0000ff size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=534115216-30082012><FONT color=#0000ff size=2 face=Arial>Looks
like you just happened to choose an inefficient door from the library. You
selected an uninsulated sgl lyr in your model.</FONT></SPAN></DIV>
<DIV><SPAN class=534115216-30082012></SPAN><SPAN class=534115216-30082012><FONT
color=#0000ff size=2 face=Arial>Depending on your choice, the u-values will
change. In the model below, I have selected 3 different doors, for
example.</FONT></SPAN></DIV>
<DIV><SPAN class=534115216-30082012><FONT color=#0000ff size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=534115216-30082012>
<DIV><SPAN class=534115216-30082012><SPAN
style="FONT-FAMILY: 'Times New Roman'; FONT-SIZE: 12pt; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA"><FONT
color=#0000ff size=2 face=Arial>With that said, and as the reviewer commented, I
would advise not using any defaults unless you do not happen to know the door
constructions in your design. </FONT></SPAN></SPAN></DIV></SPAN></DIV>
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<FONT size=2 face=Tahoma><B>From:</B> equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <B>On Behalf Of
</B>tim<BR><B>Sent:</B> Thursday, August 30, 2012 11:41 AM<BR><B>To:</B>
equest-users@lists.onebuilding.org<BR><B>Subject:</B> [Equest-users]
u-values<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=WordSection1>
<P class=MsoNormal>I let my eQuest model generate U-values (see LV-I report –
page 2 of attached pdf)<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>The U-values don’t seem to make any sense. The LV-I
report says a door has a U-value of 2.080.<o:p></o:p></P>
<P class=MsoNormal>I looked up hollow metal insulated doors on the internet and
found one that has a value of 0.16.<o:p></o:p></P>
<P class=MsoNormal>Why is there such a difference?<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>I know how to change u-values in detailed edit mode, but
wonder what experience others have had with determining what U-values should be
used.<o:p></o:p></P>
<P class=MsoNormal>I used an online calculator to find the u-value for a wall
like mine (also attached).<o:p></o:p></P>
<P class=MsoNormal>Having trouble figuring out how to determine/ enter u-value
for a roof assembly that is a trussed attic with insulation above ceiling as
well as others.<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>I also realize ASHRAE has basic u-values listed, but my leed
reviewer commented saying ASHRAE U-values should be used only if the actual
U-values are unknown. I assume this means if the makeup of a wall or
assembly cannot be determined.<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Thanks for your help in advance!<o:p></o:p></P>
<P class=MsoNormal>Timothy W. Hill<o:p></o:p></P>
<P class=MsoNormal>tim.JRGA@fuse.net<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>John R. Grier, Architect<o:p></o:p></P>
<P class=MsoNormal>11309 Deerfield Road<o:p></o:p></P>
<P class=MsoNormal>Cincinnati, Ohio 45242<o:p></o:p></P>
<P class=MsoNormal>(513)489-3690<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P></DIV></BODY></HTML>