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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Spandrel (opaque) sections of curtainwall are “walls” in both proposed and baseline cases as far as 90.1 terminology is concerned. Consider them as such for determining both Proposed and Baseline case WWR’s.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>In my past year of experience, similar to Nathan, I’ve dealt with many “fishbowl” buildings which appear all (or mostly) glass from the outside but typically have at least few feet of insulated envelope on the interior perimeter, so in that case it’s literally a wall construction with the outermost layer being glazing (or airspace then glass). <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Be sure to dig up any relevant envelope sections/details to carefully draw the line between “opaque” and “not opaque.”<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>~Nick<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#3A7A46'><img width=722 height=9 id="Picture_x0020_1" src="cid:image001.png@01D1E8C9.5008CE80"><o:p></o:p></span></p><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#3A7A46'>Nick Caton, P.E.</span></b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#3A7A46'><o:p></o:p></span></p><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width=724 style='width:543.0pt;border-collapse:collapse'><tr><td width=230 valign=top style='width:172.3pt;padding:0in 0in 0in 0in'><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'> Senior Energy Engineer</span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'> Energy and Sustainability Services</span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'> North America Operations</span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'> Schneider Electric</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p></td><td width=291 valign=top style='width:218.3pt;padding:0in 0in 0in 0in'><p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#57B069'>D </span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'>913.564.6361 </span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#57B069'>M </span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'>785.410.3317 </span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#57B069'>E </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><a href="mailto:nicholas.caton@schneider-electric.com"><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'>nicholas.caton@schneider-electric.com</span></a></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br></span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#57B069'>F </span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'>913.564.6380</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p></td><td width=203 valign=top style='width:152.4pt;padding:0in 0in 0in 0in'><p class=MsoNormal align=right style='text-align:right'><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#626469'>15200 Santa Fe Trail Drive<br>Suite 204<br>Lenexa, KS 66219<br>United States</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p></td></tr><tr style='height:4.0pt'><td width=724 colspan=3 valign=top style='width:543.0pt;padding:0in 0in 0in 0in;height:4.0pt'><p class=MsoNormal style='mso-line-height-alt:4.0pt'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#3A7A46'><img border=0 width=722 height=49 id="Picture_x0020_3" src="cid:image002.png@01D1E8C9.5008CE80" alt="cid:image001.png@01D189AB.58634A10"></span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#3A7A46'><o:p></o:p></span></p></td></tr></table><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><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"'> Equest-users [mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Michael Campbell via Equest-users<br><b>Sent:</b> Thursday, July 28, 2016 11:12 AM<br><b>To:</b> Nathan Miller<br><b>Cc:</b> equest-users@lists.onebuilding.org<br><b>Subject:</b> Re: [Equest-users] Curtain wall system - how to model baseline?<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><div><div><div><div><p class=MsoNormal>Thanks for the response Nathan.<o:p></o:p></p></div><p class=MsoNormal>There will be some spandrel glass, but I'm not sure how much.<o:p></o:p></p></div><p class=MsoNormal>But basically the spandrel portion would be considered a wall in the baseline.<o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'>Only the transparent window assemblies would be considered in the WWR. Is that correct?<o:p></o:p></p></div><p class=MsoNormal>Thank you,<o:p></o:p></p></div><p class=MsoNormal>Mike <o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On Thu, Jul 28, 2016 at 11:53 AM, Nathan Miller <<a href="mailto:nathanm@rushingco.com" target="_blank">nathanm@rushingco.com</a>> wrote:<o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Would there really be no opaque portions (aka spandrel) of the curtain wall? At the very least I’d expect you’d have about a 1’ high slab-edge-bypass opaque section. </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Our curtainwall projects (resi and office) typically have 40-50% vision glazing, and the rest is opaque, and gets modeled as a wall with calculated U-factor depending on the spandrel + inboard insulation configuration. </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='margin-top:1.0pt;mso-margin-bottom-alt:auto'><b><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#632423'> </span></b><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:4.0pt'><b><span style='font-size:9.0pt;font-family:"Verdana","sans-serif";color:#6F1200'>Nathan Miller, PE, LEED AP BD+C</span></b><b><span style='font-size:9.0pt;font-family:"Verdana","sans-serif";color:#632423'> – </span></b><i><span style='font-size:8.0pt;font-family:"Verdana","sans-serif";color:black'>Mechanical Engineer/Senior Energy Analyst</span></i><o:p></o:p></p><p class=MsoNormal style='margin-top:3.0pt;mso-margin-bottom-alt:auto;line-height:115%'><b><span style='font-size:8.0pt;line-height:115%;font-family:"Verdana","sans-serif";color:#6F1200'>RUSHING</span></b><span style='font-size:8.0pt;line-height:115%;font-family:"Verdana","sans-serif";color:#BFAB7F'> </span><span style='font-size:8.0pt;line-height:115%;font-family:"Verdana","sans-serif";color:black'>| </span><b><span style='font-size:8.0pt;line-height:115%;font-family:"Verdana","sans-serif";color:#6F1200'>D</span></b><span style='font-size:8.0pt;line-height:115%;font-family:"Verdana","sans-serif";color:#BFAB7F'> </span><span style='font-size:8.0pt;line-height:115%;font-family:"Verdana","sans-serif";color:black'><a href="tel:206-788-4577" target="_blank">206-788-4577</a> |</span><span style='font-size:8.0pt;line-height:115%;font-family:"Verdana","sans-serif";color:#BFAB7F'> </span><b><span style='font-size:8.0pt;line-height:115%;font-family:"Verdana","sans-serif";color:#6F1200'>O</span></b><span style='font-size:8.0pt;line-height:115%;font-family:"Verdana","sans-serif";color:#A50021'> </span><span style='font-size:8.0pt;line-height:115%;font-family:"Verdana","sans-serif";color:black'><a href="tel:206-285-7100" target="_blank">206-285-7100</a></span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;line-height:115%'><b><span style='font-size:8.0pt;line-height:115%;font-family:"Verdana","sans-serif";color:#6F1200'><a href="http://www.rushingco.com/" target="_blank"><span style='color:#6F1200'>www.rushingco.com</span></a></span></b><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> Equest-users [mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>Michael Campbell via Equest-users<br><b>Sent:</b> Thursday, July 28, 2016 11:51 AM<br><b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a><br><b>Subject:</b> [Equest-users] Curtain wall system - how to model baseline?</span><o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><div><div><div><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>Hello,<o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I have a potential project in which the client is proposing a curtain wall system.<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>The model will be based on ASHRAE 90.1-2013 Appendix G.<o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I believe the appropriate way to model this would be to have a WWR of 100% (or near 100%) in the proposed case. For the baseline case, the window area would have to be reduced to get the WWR down to 40%.<o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>Is this the correct way or is there different guidance for modeling curtain wall systems?<o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Thank you,<o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Mike Campbell<o:p></o:p></p></div></div></div></div></div></div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal><br>______________________________________________________________________<br>This email has been scanned by the Symantec Email Security.cloud service.<br>______________________________________________________________________<o:p></o:p></p></div></body></html>