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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'>Thanks for the quick response 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'>Do you also have an opinion on the code issue, will it have to be compared to exterior walls or interior walls if the walls aren’t really “shared” but are adjacent to each other with no exposure to the environment? What if the adjacent building is demolished, shouldn’t the HVAC system be sized to meet that condition (or the wall built up to exterior wall performance values)? I’m curious to understand how this is approached in an MEP/code compliance standpoint.<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'>Thanks again for the feedback.<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'>Mirza<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 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"'> Nick Caton [mailto:ncaton@smithboucher.com] <br><b>Sent:</b> Tuesday, September 06, 2011 10:18 AM<br><b>To:</b> Mirza Sajjal; bldg-sim@lists.onebuilding.org<br><b>Subject:</b> RE: [Bldg-sim] FW: [Equest-users] Wall classification for adjacentbuildings<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 Mirza,<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 experience, “shared walls” are not counted as “exterior surface area” for any WWR calculations or similar. <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 eQuest/DOE2 terminology: “Interior walls” model heat transfer (or lack thereof, in the case of an adiabatic wall) between two spaces. They will not interact directly with exterior conditions.<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'>Surfaces separating building spaces from outside ambient conditions are “exterior” surfaces. <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'>There are no hard rules as to how you “should” model a shared wall, but in eQuest you have at least a few options I think anyone would agree are acceptable in most cases:<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Assuming heat transfer between the associated conditioned spaces is negligible, but assuming the thermal mass of said wall is important for accuracy, model an adiabatic wall (default approach coming out of the wizards in eQuest).<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Assuming heat transfer between the associated conditioned spaces is negligible, and the thermal lag caused by the mass is also negligible for accuracy, simply delete any such walls and don’t model them at all.<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Assuming heat transfer is important for the model’s accuracy, model a normal interior partition and also expand your model to include the adjacent building space and its envelope, internals and systems.<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 somebody demolishes half of your building in the indeterminate future, I think we’d all agree that would probably warrant an update to the model and you’d treat the surfaces newly exposed to the exterior as such.<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><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><img width=119 height=37 id="Picture_x0020_1" src="cid:image001.jpg@01CC6C81.336B6900" alt="cid:489575314@22072009-0ABB"></span><b><span style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";color:#2D4D5E'><o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";color:#2D4D5E'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-family:"Stylus BT","sans-serif";color:#2D4D5E'>NICK CATON, P.E.<o:p></o:p></span></b></p><p class=MsoNormal><span style='font-size:7.5pt;font-family:"Calibri","sans-serif";color:#CC9900'>SENIOR ENGINEER<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:7.5pt;font-family:"Calibri","sans-serif";color:#CC9900'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#2D4D5E'>Smith & Boucher Engineers</span><span style='font-size:7.5pt;color:#CC9900'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#2D4D5E'>25501 west valley parkway, suite 200<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#2D4D5E'>olathe, ks 66061<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#2D4D5E'>direct 913.344.0036<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#2D4D5E'>fax 913.345.0617<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><a href="www.smithboucher.com" title="blocked::www.smithboucher.com"><span style='font-size:10.0pt'>www.smithboucher.com</span></a></span><u><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:blue'> </span></u><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:"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>Mirza Sajjal<br><b>Sent:</b> Tuesday, September 06, 2011 8:52 AM<br><b>To:</b> bldg-sim@lists.onebuilding.org<br><b>Subject:</b> [Bldg-sim] FW: [Equest-users] Wall classification for adjacentbuildings<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'>Thought I’d send this out to the bldg-sim list as well.<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 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-bounces@lists.onebuilding.org [mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Mirza Sajjal<br><b>Sent:</b> Friday, September 02, 2011 12:50 PM<br><b>To:</b> equest-users@lists.onebuilding.org<br><b>Subject:</b> [Equest-users] Wall classification for adjacent buildings<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 All,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I was wondering if anyone has an idea on an issue that I’ve come across regarding what is considered an exterior wall and whether the wall area should be included in the window-wall ratio calculations. <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'>There are two existing buildings which have walls touching with no air gap, but if one of the buildings were to be demolished the other will not be affected i.e. structurally independent (although there is very little possibility the building will be demolished). My question is whether these walls are considered exterior or interior walls? My understanding is that the energy model should simulate it as an adiabatic wall but it should be considered an exterior wall for code compliance and window-wall ratio calculations.<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'><img border=0 width=470 height=175 id="Picture_x0020_2" src="cid:image002.jpg@01CC6C81.336B6900"><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'>Any feedback is much appreciated. Thanks in advance.<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'>Regards,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Mirza<o:p></o:p></span></p><p class=MsoNormal>This message has been scanned by MailController - portal1.mailcontroller.co.uk | <o:p></o:p></p><p align=center style='text-align:center'>This message has been scanned by <a href="http://portal1.mailcontroller.co.uk/">MailController</a>.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:5.0pt;margin-right:0in;margin-bottom:5.0pt;margin-left:0in'> <span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal>This message has been scanned by MailController - portal1.mailcontroller.co.uk | <o:p></o:p></p><p align=center style='text-align:center'>This message has been scanned by <a href="http://portal1.mailcontroller.co.uk/">MailController</a>.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:5.0pt;margin-right:0in;margin-bottom:5.0pt;margin-left:0in'> <span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal>This message has been scanned by MailController - portal1.mailcontroller.co.uk | <o:p></o:p></p><p align=center style='text-align:center'>This message has been scanned by <a href="http://portal1.mailcontroller.co.uk/">MailController</a>.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:5.0pt;margin-right:0in;margin-bottom:5.0pt;margin-left:0in'> <span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal>This message has been scanned by MailController - portal1.mailcontroller.co.uk | <o:p></o:p></p><p align=center style='text-align:center'>This message has been scanned by <a href="http://portal1.mailcontroller.co.uk/">MailController</a>.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:5.0pt;margin-right:0in;margin-bottom:5.0pt;margin-left:0in'> <span lang=EN-GB><o:p></o:p></span></p></div>This message has been scanned by MailController - portal1.mailcontroller.co.uk | <P align=center>This message has been scanned by <A href="http://portal1.mailcontroller.co.uk/">MailController</A>.</P> <P class=MsoNormal style="MARGIN: 5pt 0pt; mso-pagination: none; mso-layout-grid-align: none"><SPAN lang=EN-GB style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Tahoma; mso-ansi-language: EN-GB"></SPAN><SPAN lang=EN-GB style="mso-ansi-language: EN-GB"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN> </P></body></html>