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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>It depends on the code in use. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I submitted an official request (CM
proposal) to the ASHRAE 90.1 Envelope committee to change the definition to
only include the above grade walls but they declined it so it is still the
above and below grade walls. The reason I sent the request is that architects
tend to add more glazing to the above grade walls because they can include the
below grade walls in the definition. I showed some modeling results of the
difference between a two story building with one above and below grade wall in
a few difference cities in the <st1:country-region w:st="on"><st1:place w:st="on">US</st1:place></st1:country-region>
and there was a significant energy impact.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>However, I believe the IECC includes only
the above grade walls. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Renée<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
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size=2 color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:blue'>Renée Azerbegi, CEM, LEED-AP</span></font></b></strong><font
size=2 color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:blue'><o:p></o:p></span></font></p>
<p class=MsoAutoSig style='margin:0in;margin-bottom:.0001pt'><em><i><font
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color:black'>President/Sustainable Design Engineer</span></font></i></em><em><i><font
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color:blue'>ambient energy – solar & sustainable design solutions</span></font><font
color=blue><span style='color:blue'><o:p></o:p></span></font></b></strong></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
BLDG-SIM@GARD.COM [mailto:BLDG-SIM@GARD.COM] <b><span style='font-weight:bold'>On
Behalf Of </span></b>Larry Degelman<br>
<b><span style='font-weight:bold'>Sent:</span></b> Sunday, April 23, 2006 10:26
AM<br>
<b><span style='font-weight:bold'>To:</span></b> BLDG-SIM@GARD.COM<br>
<b><span style='font-weight:bold'>Subject:</span></b> [BLDG-SIM] </span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Gerald et al,</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>The conventional definition of window-wall-ratio is the
window area divided by the “gross” wall area, though the term
“window-wall-ratio” is no longer among the Definitions section of
90.1-2004. For that matter, WWR is not defined in the Abbreviations
section.</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Notwithstanding all that, the definition for “Gross
Wall Area” is clearly defined in the 90.1-2004 User’s Manual.</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>On page 5-30, example 5-G addresses “Determining Gross
Wall Area”, stating that this is very significant since the window area
requirements are based on Window-Wall-Ratio (WWR). </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Answer (as shown on the same page): “The gross
wall area includes both above-grade walls and below-grade walls so that gross
wall area is simply the perimeter of the building … times the
height…”</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Larry D.</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>===================================== <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Larry O. Degelman,
P.E. <a
href="mailto:ldegelman@cox.net">ldegelman@cox.net</a> </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Prof. Emeritus of
Architecture Ph./Fax: 1-979-696-2506</span></font><o:p></o:p></p>
<p class=MsoNormal><st1:place w:st="on"><st1:PlaceName w:st="on"><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>Texas</span></font></st1:PlaceName><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> <st1:PlaceName
w:st="on">A&M</st1:PlaceName> <st1:PlaceType w:st="on">University</st1:PlaceType></span></font></st1:place><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>=====================================<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>-----Original Message-----</span></font><o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>From: BLDG-SIM@gard.com</span></font><o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>To: BLDG-SIM@gard.com</span></font><o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Sent: Fri Apr 21 09:06:56 2006</span></font><o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Subject: [BLDG-SIM] ASHRAE 90.1 window-wall
ratio</span></font><o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'> </span></font><o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>I recently came across a paper from
"Building Energy</span></font><o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Codes Program" called
"Setting the Standard" and lists</span></font><o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>out various new code updates. It
seems that currently</span></font><o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>we are allowed to count below-grade
walls as part of</span></font><o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>the window-wall ratio
calculations. Does anyone have</span></font><o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>an update on this or point me to the
right resource to</span></font><o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>confirm this information?</span></font><o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'> </span></font><o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Thanks.</span></font><o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Gerald</span></font><o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'> </span></font><o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>__________________________________________________</span></font><o:p></o:p></p>
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style='font-size:10.0pt;font-family:Arial'>Do You Yahoo!?</span></font><o:p></o:p></p>
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<p class=MsoNormal style='text-autospace:none'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'> </span></font><o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>======================================================</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<pre><font size=2 face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>==================<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>You received this e-mail because you are subscribed <o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>to the BLDG-SIM@GARD.COM mailing list. To unsubscribe <o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>from this mailing list send a blank message to <o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>BLDG-SIM-UNSUBSCRIBE@GARD.COM<o:p></o:p></span></font></pre></div>
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