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<div class=Section1>
<p class=MsoNormal><span style='color:#1F497D'>ASHRAE 90.1-2004 Section 5.8.2.5
exception (b) allows the SHGC/SC center-of-glass to be an acceptable
alternative for determining compliance with the SHGC/SC requirements for the
overall fenestration area.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Josh </span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'><ns0:place><ns0:City><span
style='color:#1F497D'>Greenfield</span></ns0:City><span style='color:#1F497D'>,
</span><span style='font-size:7.5pt'><ns0:State><span style='color:#1F497D'>PE</span></ns0:State></ns0:place></span></span><span
style='font-size:7.5pt;font-family:"Arial","sans-serif";color:#1F497D'>, LEED
AP</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><br>
Senior Associate<br>
Primera Engineers, Ltd.<br>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><ns0:Street><ns0:address><span
style='color:#1F497D'>100 S. Wacker Drive, Suite 700</span></ns0:address></ns0:Street><span
style='color:#1F497D'><br>
</span><ns0:place><ns0:City><span style='color:#1F497D'>Chicago</span></ns0:City><span
style='color:#1F497D'>, </span><ns0:State><span style='color:#1F497D'>IL</span></ns0:State><span
style='color:#1F497D'> </span><ns0:PostalCode><span style='color:#1F497D'>60606</span></ns0:PostalCode></ns0:place><span
style='color:#1F497D'><br>
312.606.0910 </span><ns0:place><span style='color:#1F497D'>Main</span></ns0:place><span
style='color:#1F497D'><br>
312.242.6392 Direct<br>
312.606.0415 Fax<br>
</span></span><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:#1F497D'><a href="blocked::mailto:jgreenfield@primerachicago.com"
title="blocked::mailto:jgreenfield@primerachicago.com"><span style='font-family:
"Arial","sans-serif"'>jgreenfield@primerachicago.com</span></a><br>
<a href="http://www.primerachicago.com"
title="blocked::http://www.primerachicago.com/"><span style='font-family:"Arial","sans-serif"'>http://www.primerachicago.com</span></a></span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:green'>Be Green...please consider the environment before printing this
email.</span><span style='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"'> Zeng, Ming
[mailto:mzeng@leoadaly.com] <br>
<b>Sent:</b> Monday, September 22, 2008 1:09 PM<br>
<b>To:</b> Andrew Craig; Josh Greenfield; bldg-sim@lists.onebuilding.org;
equest-users@lists.onebuilding.org<br>
<b>Subject:</b> RE: [Bldg-sim] Glass center-of-glass to assembly U-Value?<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Can we use glass center of glass
shading coefficient for the assembly ? If not, is there any similar table for
assembly shading coefficient calculation? <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Thanks. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#888888'>Ming
Zeng</span></b><span style='font-size:7.5pt;font-family:"Tahoma","sans-serif";
color:#888888'>, PE, LEED<sup>®</sup> Accredited Professional</span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D'><br>
</span><span style='font-size:7.5pt;font-family:"Tahoma","sans-serif";
color:#888888'>Mechanical Engineer</span><span style='font-size:12.0pt;
font-family:"Times New Roman","serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D;
border:solid windowtext 1.0pt;padding:0in'><img border=0 width=380 height=26
id="_x0000_i1027" src="cid:image001.jpg@01C91CBE.C5DBCC50"
alt="Image removed by sender. LEO A DALY"></span><span style='font-size:12.0pt;
font-family:"Times New Roman","serif";color:#1F497D'><br>
</span><span style='font-size:7.5pt;font-family:"Tahoma","sans-serif";
color:#888888'>730 Second Avenue South, Suite 1100, Minneapolis, MN 55402-2455<br>
<b>T</b> 612.338.8741 <b>F</b> 612.338.4840 <b>D</b> 612.341.9539 <br>
<a href="http://www.leoadaly.com"><span style='font-size:7.0pt;text-decoration:
none'>www.leoadaly.com</span></a> <a
href="mailto:MZeng@leoadaly.com"><span style='font-size:7.0pt'>MZeng@leoadaly.com</span></a></span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D'><o:p></o:p></span></p>
</div>
<table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0>
<tr>
<td style='padding:0in 0in 0in 0in'>
<p class=MsoNormal><span style='font-size:7.0pt;font-family:"Tahoma","sans-serif";
color:#006633;border:solid windowtext 1.0pt;padding:0in'><img border=0
width=20 height=20 id="_x0000_i1026" src="cid:image002.jpg@01C91CBE.C5DBCC50"
alt="Image removed by sender. http://mail.leoadaly.com/greentree.gif"></span><span
style='font-size:7.0pt;font-family:"Tahoma","sans-serif";color:#006633'>Please
consider the environment before printing.<o:p></o:p></span></p>
</td>
</tr>
</table>
<p class=MsoNormal><span style='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"'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Andrew
Craig<br>
<b>Sent:</b> Monday, September 22, 2008 11:41 AM<br>
<b>To:</b> Josh Greenfield; bldg-sim@lists.onebuilding.org;
equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Bldg-sim] Glass center-of-glass to assembly U-Value?<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Attached is a handy spreadsheet from the Oregon Energy Code User’s
Manual. Hopefully this is what you are looking for.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Regards,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<div>
<p><b><span style='font-size:7.5pt;font-family:"Trebuchet MS","sans-serif";
color:black'>Please note my new e-mail address: <a
href="mailto:andrewc@interfaceeng.com" title="mailto:michelew@interfaceeng.com">andrewc@interfaceeng.com</a></span></b><span
style='color:navy'><o:p></o:p></span></p>
<p><b><span style='font-size:7.5pt;font-family:"Trebuchet MS","sans-serif";
color:black'>Andrew Craig, EIT,LEED AP</span></b><b><span style='font-size:
7.5pt;font-family:"Trebuchet MS","sans-serif";color:#663300'>/</span></b><span
style='font-size:7.5pt;font-family:"Trebuchet MS","sans-serif";color:black'> Mechanical
Designer/ Energy Analyst</span><span style='font-size:7.5pt;font-family:"Trebuchet MS","sans-serif";
color:navy'><br>
</span><b><span style='font-size:7.5pt;font-family:"Trebuchet MS","sans-serif";
color:#663300'>INTERFACE</span></b><span style='font-size:7.5pt;font-family:
"Trebuchet MS","sans-serif";color:#663300'> ENGINEERING</span><span
style='font-size:7.5pt;font-family:"Trebuchet MS","sans-serif";color:navy'> <br>
</span><b><span style='font-size:7.5pt;font-family:"Trebuchet MS","sans-serif";
color:black'>direct</span></b><span style='font-size:7.5pt;font-family:"Trebuchet MS","sans-serif";
color:black'> 503.382.2696</span><span style='font-size:7.5pt;font-family:"Trebuchet MS","sans-serif";
color:navy'> </span><o:p></o:p></p>
</div>
<div>
<div class=MsoNormal align=center style='text-align:center'><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'>
<hr size=2 width="100%" align=center>
</span></div>
<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"'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Josh
Greenfield<br>
<b>Sent:</b> Monday, September 22, 2008 9:07 AM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org; equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] Glass center-of-glass to assembly U-Value?</span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Does anyone have any rules of thumb on a quick/easy
approximation for taking a Center-of-Glass U-value and converting it to an
Assembly U-value based on industry standard assembly constructions? I
know this depends on a lot of variables, like frame material and conductance,
and the size of the overall glass assembly, etc., but I’m just looking for a
quick estimate on performance reduction for comparisons to other window types
for a particular building.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Also, is there an ASHRAE 90.1-2004 Baseline glass Visible
Light Transmittance (VLT)?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Josh Greenfield, </span><span
style='font-size:7.5pt;font-family:"Arial","sans-serif"'>PE, LEED AP</span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'><br>
Senior Associate<br>
Primera Engineers, Ltd.<br>
100 S. Wacker Drive, Suite 700<br>
Chicago, IL 60606<br>
312.606.0910 Main<br>
312.242.6392 Direct<br>
312.606.0415 Fax<br>
</span><span style='font-size:10.0pt;font-family:"Times New Roman","serif"'><a
href="blocked::mailto:jgreenfield@primerachicago.com"
title="blocked::mailto:jgreenfield@primerachicago.com"><span style='font-family:
"Arial","sans-serif"'>jgreenfield@primerachicago.com</span></a><br>
<a href="http://www.primerachicago.com"
title="blocked::http://www.primerachicago.com/"><span style='font-family:"Arial","sans-serif"'>http://www.primerachicago.com</span></a></span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:green'>Be Green...please consider the environment before printing this
email.</span><o:p></o:p></p>
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