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</o:shapelayout></xml><![endif]--></head><body bgcolor=white 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'>Hi,<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'>As a side point, if you use eQuest, be careful when using the simulation output to calculate the W2W ratio. If you modify the roof, which I do regularly because of overlapping building shells, the W2W ratio from the LV-D report may not be correct. Only EXTERIOR-WALL with LOCATION =TOP is counted as ROOF. Anything else is counted as EXTERIOR-WALL. On a recent school, the LV-D said the W2W ratio = 16.3% when the real number was 20.6%. Also, make sure to check that the baseline model generator has assigned the correct constructions.<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'>Shaun Martin LEED-AP, BEMP<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Principal<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Shaun Martin Consulting<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>#90 – 425 Carrall Street<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Vancouver, BC V6B 6E3<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>p. 604-789-1095<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:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><a name="_MailEndCompose"><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></a></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'> Bldg-sim [mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>via Bldg-sim<br><b>Sent:</b> April 15, 2016 12:17 PM<br><b>To:</b> jglazer@gard.com; bldg-sim@lists.onebuilding.org<br><b>Subject:</b> Re: [Bldg-sim] Appendix G Window to wall ratio<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Hi there K!<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'>As far as LEED/GBCI reviews are concerned, the User’s manual is a very strong a resource to cite in my experience, especially where it can serve to clarify something less clear in the Standard.<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'>That said, I’ll admit to being shifty at times on this issue (there are certainly grey areas the standard doesn’t clearly address), but I would probably lean towards Jason’s interpretation as well for most cases. In my own phrasing: Draw the WWR area line to exclude “conditioned envelope that faces dirt.” <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'>If you are dealing with a building featuring tons of glass facade, do keep in mind that opaque glass façade areas (i.e. spandrel) may be excluded when tallying the window area (be sure your model reflects such a distinction). <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'>If the quantity of windows in your semi-underground levels is pushing you just past the “40% mark” for the building as a whole (I assume that’s what you’re referencing), then do acknowledge/communicate with your design team that they are toe-ing the line with the Standard. Some project-specific sensitivity analysis may be helpful for your own understanding before waving a big red flag over the issue: bumping slightly past that 40% mark often won’t hurt performance rating much, but a building with 80% WWR is almost certain to feel the burn. <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'>Also note that if you are making more use out of the building’s relatively high WWR from an energy perspective (i.e. natural ventilation for thermal comfort, daylighting controls, deliberate solar load shading considerations for certain climates…), there’s nothing stopping your team from claiming a net credit considering everything together. <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'>Finally, as a fellow who LOVES energy modeling but also likes getting outside every so often, I personally reckon extra daylighting and views are subjectively “worth” a net energy penalty. I think most building owners/tenants outside of the vampire population would generally agree. Consider me a fan of higher window distributions, so long as you’re keeping me thermally and visually comfortable (glare control please!).<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'>As to whether Appendix G intends to “penalize” below grade floors with windows… that might just be a stretch. If you were to flip around the situation (include below grade envelope for WWR calcs) – it would be weird to generally “encourage/discourage” the use of below grade windows facing dirt, right? As a general rule, I try to remind myself that it’s probably safe to assume the committee drafting this language never had any specific/given project in mind, and were just trying to come up with a generally fair (if occasionally arbitrary/silly) line to draw in the sand that would suit most cases.<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'>Hope this helps you enjoy the weekend a little more!<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><br>~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><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial",sans-serif;color:#3A7A46'>------------------------------------------------------------------------------------------------------------------------------<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></div><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width=905 style='width:543.0pt;border-collapse:collapse'><tr><td width=287 valign=top style='width:172.3pt;padding:0cm 0cm 0cm 0cm'><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=364 valign=top style='width:218.3pt;padding:0cm 0cm 0cm 0cm'><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=254 valign=top style='width:152.4pt;padding:0cm 0cm 0cm 0cm'><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=905 colspan=3 valign=top style='width:543.0pt;padding:0cm 0cm 0cm 0cm;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:image001.png@01D19955.8CB4BCE0" alt="cid:image001.png@01D189AB.58634A10"><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><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif;color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif;color:windowtext'> Bldg-sim [<a href="mailto:bldg-sim-bounces@lists.onebuilding.org">mailto:bldg-sim-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>Jason Glazer via Bldg-sim<br><b>Sent:</b> Friday, April 15, 2016 1:17 PM<br><b>To:</b> <a href="mailto:bldg-sim@lists.onebuilding.org">bldg-sim@lists.onebuilding.org</a><br><b>Subject:</b> Re: [Bldg-sim] Appendix G Window to wall ratio<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'><tt><span style='font-size:10.0pt'>I would suggest that you count only the portion of the wall that is above grade. Just my opinion.</span></tt><span style='font-size:10.0pt;font-family:"Courier New"'><br><br><tt>Jason</tt></span><o:p></o:p></p><div><p class=MsoNormal>On 4/14/2016 5:17 PM, k bk via Bldg-sim wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><div><p class=MsoNormal>Appendix G (LEED) indicates that when we calculate the window to wall ratio only the above grade walls shall be included.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>We have a building design where the conditioned basement wall partially protrudes above ground and also has windows that let in sunlight. It is unclear if in this circumstance we could count the whole wall in the window to wall ratio. Any body have any hints.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Surprisingly, this definition of below grade wall appears to apply only to appendix G & LEED. As per the user manual to 90.1 the below grade wall can be included towards the window to wall ratio, for the prescriptive path and chapter 11.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Frankly speaking, it is unfortunate that Appendix G & LEED, Would discourage the construction of below grade conditioned spaces in this manner. In essence aren't we increasing the efficiency of the building if we put conditioned spaces below grade. <o:p></o:p></p></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><br><br><o:p></o:p></p><pre>_______________________________________________<o:p></o:p></pre><pre>Bldg-sim mailing list<o:p></o:p></pre><pre><a href="http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org</a><o:p></o:p></pre><pre>To unsubscribe from this mailing list send a blank message to <a href="mailto:BLDG-SIM-UNSUBSCRIBE@ONEBUILDING.ORG">BLDG-SIM-UNSUBSCRIBE@ONEBUILDING.ORG</a><o:p></o:p></pre></blockquote><p class=MsoNormal><br><br>______________________________________________________________________<br>This email has been scanned by the Symantec Email Security.cloud service.<br>______________________________________________________________________<o:p></o:p></p></div></body></html>