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<p class=MsoNormal><span style='color:black'>Any portions of the roof that are
transmitting light and solar energy will have to be defined as windows in
eQuest (or most other programs). I’m assuming when you say glass
roof that you are considering basically a full-size skylight, with irregular
shape?<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'>Defining a roof surface with the properties
of glass will still result in an opaque surface, although the thermal
resistance and mass would be as-specified, and transmission of solar radiation
would be neglected. This won’t work if you have any spaces below
with daylighting controls, let alone the heat transfer from light transmission.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'>Suggest that you give it your best
shot with child windows, depending on your daylighting needs. Add the
majority of the area, take stock of results, add a few more windows with finer
detail, check results, and repeat. Eventually adding the finer detail isn’t
going to provide meaningful changes to the outputs. (As a previous poster
mentioned be sure the interaction with any daylighting controls is accounted
for.)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'>David<o:p></o:p></span></p>
<div>
<p class=MsoNormal><u><span style='color:black'>
<o:p></o:p></span></u></p>
<p class=MsoNormal><span style='font-size:8.0pt;color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><b><span style='color:#1F497D'>David S. Eldridge, Jr.</span></b><b><span
style='color:#244061'>, P</span></b><b><span style='color:#1F497D'>.</span></b><b><span
style='color:#244061'>E</span></b><b><span style='color:#1F497D'>.</span></b><b><span
style='color:#244061'>, LEED AP BD+C, BEMP, HBDP<o:p></o:p></span></b></p>
<p class=MsoNormal><span style='color:#1F497D'>Project Manager</span><span
style='font-size:10.0pt;color:#244061'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:4.0pt;color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#365F91'>Direct: (847) 316-92</span><span
style='color:#1F497D'>24</span><span style='color:#365F91'> | Fax: (</span><span
style='color:#1F497D'>847</span><span style='color:#365F91'>) </span><span
style='color:#1F497D'>328</span><span style='color:#365F91'>-</span><span
style='color:#1F497D'>4550</span><span style='color:#365F91'><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'><a
href="http://www.grummanbutkus.com">http://www.grummanbutkus.com</a></span><span
style='color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><b><span style='color:#244061'>Grumman/Butkus Associates</span></b><span
style='color:gray'> </span><span style='color:#365F91'>| 820 Davis Street,
Suite 300 | Evanston, IL 60201</span><span style='font-size:12.0pt;color:black'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;color:gray'>Energy Efficiency
Consultants and Sustainable Design Engineers<o:p></o:p></span></p>
<p class=MsoNormal><u><span style='color:black'>
<o:p></o:p></span></u></p>
</div>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
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<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"'> equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Lauren
Rosenthal<br>
<b>Sent:</b> Thursday, May 06, 2010 11:16 AM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] change roof construction to glass<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>All,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Does anyone know how to change an existing roof in detailed
mode of the model to a glass roof? It is an irregular shape (from a polygon)
and therefore creating child windows all over it will be very hard because they
will not fit in the shape very easily as rectangular windows. Can I change its
properties in the .inp file?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks in advance,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:gray'>____________________________________<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:gray'>Lauren Rosenthal</span><span style='color:gray'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:gray'>Mechanical Engineer</span><span style='color:gray'><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:gray'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:gray'>Los Angeles CA</span><span style='color:gray'><o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<pre>____________________________________________________________<br>
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