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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'>I also agree with the reviewer. The existing envelope condition stipulation is a double edged sword. Do you truly think it is a net penalty on your LEED application to add windows? Other LEED points reward daylight and views, and the thermal energy impacts of the windows are hopefully offset by electric lighting savings. <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 style='text-autospace:none'><b><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#5F574F'>Paul Riemer, PE, LEED AP BD+C</span></b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> <o:p></o:p></span></p><p class=MsoNormal><b><span style='font-family:"Verdana","sans-serif";color:#C00000'>DUNHAM</span></b><span style='font-size:11.0pt;font-family:"Verdana","sans-serif";color:#C00000'><o:p></o:p></span></p></div><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 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>James Hansen<br><b>Sent:</b> Tuesday, October 11, 2011 1:31 PM<br><b>To:</b> Anne Juran; bldg-sim@lists.onebuilding.org<br><b>Subject:</b> Re: [Bldg-sim] LEED and existing envelopes<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Thanks for the responses Anne and Bill. But this seems ridiculous, and goes against everything I've done to date.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>So if we have an existing building with no windows, and we want to reuse the building structure/skin (which LEED strongly encourages), we get penalized for wanting some daylight in the building? <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I think all of the references to the "baseline building envelope shall represent existing conditions" is intended to demonstrate that you can use existing window and wall coefficients, NOT that you can't add windows. But what do I know...<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Does anyone know for sure?<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>GHT Limited<br>James Hansen, P.E., LEED AP</b><br>Senior Associate<br>1010 N. Glebe Road, Suite 200<br>Arlington, VA 22201-4749<br>703-243-1200 (office)<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>703-338-5754 (cell)<br>703-276-1376 (fax)<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a href="http://www.ghtltd.com/">www.ghtltd.com</a><o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>From:</b> Anne Juran [mailto:juran@summerconsultants.com] <br><b>Sent:</b> Tuesday, October 11, 2011 2:02 PM<br><b>To:</b> James Hansen; bldg-sim@lists.onebuilding.org<br><b>Subject:</b> RE: [Bldg-sim] LEED and existing envelopes<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><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I find existing envelopes always tricky because the information is not delivered in the clearest manner. However, I think in this case the reviewer is correct, based on 90.1 Table G3.1.5 item f under “Baseline Building Performance” and page G-17 of the User’s Manual. Also, in item c they explicitly state that it applies to new buildings and additions, but do not list existing (other than the little blip about alterations and 5.1.3.)<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>From:</b> bldg-sim-bounces@lists.onebuilding.org [mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>James Hansen<br><b>Sent:</b> Tuesday, October 11, 2011 10:23 AM<br><b>To:</b> bldg-sim@lists.onebuilding.org<br><b>Subject:</b> [Bldg-sim] LEED and existing envelopes<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><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I know this has been covered before, but I just received the following comment from a GBCI reviewer for a v3 Core and Shell project I'm working on. The project is basically an existing 5-story warehouse with almost no windows. Part of the renovation is adding windows. The comment is as follows:<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Table 1.4.1B indicates that the window-to-gross-wall ratio is identical in both cases; however it is unclear whether any fenestration was added or removed as part of the renovation. The baseline ratio must reflect the ratio as it existed prior to the renovation and the proposed ratio must reflect the ratio as it exists after the renovation. Revise the Baseline and/or Proposed cases as necessary so that the window-to-gross-wall ratio is accurately modeled and provide a revised prerequisite form and updated energy model output summaries as necessary. <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I didn't think that this was the case - I thought that if you had an existing building, any EXISTING-TO-REMAIN windows would show up as the existing window type, but any NEW windows in the proposed alteration would be matched in the baseline model and comply with the Table 5.5 requirements. Meaning the WWR remained the 1:1 as long as it was < 40% glass.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I think this is just a matter of educating the reviewer on our building, but I wanted to make sure that there hadn't been a shift in how GBCI reviews existing buildings.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Thanks!<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>GHT Limited<br>James Hansen, P.E., LEED AP</b><br>Senior Associate<br>1010 N. Glebe Road, Suite 200<br>Arlington, VA 22201-4749<br>703-243-1200 (office)<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>703-338-5754 (cell)<br>703-276-1376 (fax)<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a href="http://www.ghtltd.com/">www.ghtltd.com</a><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div class=MsoNormal align=center style='text-align:center'><hr size=2 width="100%" align=center></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>The information contained in this communication is confidential, may be privileged, and is intended only for the use of the addressee. It is the property of GHT Limited. Unauthorized use, disclosure or copying of this communication or any part thereof is strictly prohibited and may be unlawful. If you have received this communication in error, please notify me immediately by return e-mail or by e-mail to <a href="mailto:ght@ghtltd.com">ght@ghtltd.com</a>, and destroy this communication and all copies thereof, including all attachments. Thank you.<o:p></o:p></p></div><div class=MsoNormal align=center style='text-align:center'><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:blue'><hr size=2 width="100%" align=center></span></div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>The information contained in this communication is confidential, may be privileged, and is intended only for the use of the addressee. It is the property of GHT Limited. Unauthorized use, disclosure or copying of this communication or any part thereof is strictly prohibited and may be unlawful. If you have received this communication in error, please notify me immediately by return e-mail or by e-mail to </span><span style='font-size:10.0pt;color:black'><a href="mailto:ght@ghtltd.com"><span style='font-family:"Arial","sans-serif"'>ght@ghtltd.com</span></a></span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>, and destroy this communication and all copies thereof, including all attachments. Thank you.</span><span style='font-size:10.0pt;color:blue'><o:p></o:p></span></p></div></body></html>