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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'>There is a section in Appendix G (G1.2) addressing this:<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt'>Neither the <i>proposed building performance </i>nor the<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><i><span style='font-size:10.0pt'>baseline building performance </span></i><span style='font-size:10.0pt'>are predictions of<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt'>actual <i>energy </i>consumption or costs for the <i>proposed<o:p></o:p></i></span></p><p class=MsoNormal style='text-autospace:none'><i><span style='font-size:10.0pt'>design </span></i><span style='font-size:10.0pt'>after <i>construction</i>. Actual experience will differ<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt'>from these calculations due to variations such as occupancy,<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt'>building operation and maintenance, weather,<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><i><span style='font-size:10.0pt'>energy </span></i><span style='font-size:10.0pt'>use not covered by this procedure, changes in<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><i><span style='font-size:10.0pt'>energy </span></i><span style='font-size:10.0pt'>rates between design of the building and occupancy,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt'>and the precision of the calculation tool.</span><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'>You may also want to check out articles on building labeling systems that discuss differences between asset (theoretical, modeling-based) and operational (based on actual utility bills) ratings, such as the one attached (see p.4-6). Both have value as long as they are interpreted correctly. <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'>Maria<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><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><b><span style='font-size:11.0pt;font-family:"Verdana","sans-serif";color:#666666'>Maria Karpman </span></b><span style='font-size:11.0pt;font-family:"Verdana","sans-serif";color:#666666'>LEED AP, BEMP, CEM</span><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:"Verdana","sans-serif";color:#666666'>________________</span><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:"Verdana","sans-serif";color:#666666'>Karpman Consulting<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";color:#666666'><a href="http://www.karpmanconsulting.net/"><span style='color:blue'>www.karpmanconsulting.net</span></a> </span><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";color:#666666'>Phone </span><span style='font-size:7.5pt;font-family:"Helvetica","sans-serif";color:#666666;background:white'>860.430.1909 </span><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:7.5pt;font-family:"Arial","sans-serif";color:#666666'>41C New London Turnpike</span><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:7.5pt;font-family:"Arial","sans-serif";color:#666666'>Glastonbury, CT 06033</span><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 [mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Brooks, Alamelu<br><b>Sent:</b> Thursday, May 21, 2015 10:43 AM<br><b>To:</b> Jim Dirkes; Nathan Kegel<br><b>Cc:</b> bldg-sim@lists.onebuilding.org<br><b>Subject:</b> Re: [Bldg-sim] Comparing ASHRAE 90.1 App G Models to Real 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'>I believe Appendix G is not meant to measure the performance of the existing building. ASHRAE 90.1 Appendix G Technical Committee is the right source to answer this question. They can clarify the intention of the APP G modeling methodology.<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'>Best,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Alamelu<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#1F497D'>Alamelu Brooks LEED AP (BD+C), HBDP, BEAP, EIT| Senior Associate | +1.443.718.4881 direct | <a href="mailto:Alamelu.Brooks@icfi.com">Alamelu.Brooks@icfi.com</a> | icfi.com <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#1F497D'>ICF INTERNATIONAL | 7125 Thomas Edison Drive, Suite 100, Columbia, MD 21046 USA <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:2.25pt;margin-right:0in;margin-bottom:2.25pt;margin-left:0in'><span style='font-size:8.5pt;font-family:"Verdana","sans-serif";color:black'>Connect with us on <a href="http://www.icfi.com/social">social media</a>.</span><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><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 [<a href="mailto:bldg-sim-bounces@lists.onebuilding.org">mailto:bldg-sim-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>Jim Dirkes<br><b>Sent:</b> Thursday, May 21, 2015 10:36 AM<br><b>To:</b> Nathan Kegel<br><b>Cc:</b> <a href="mailto:bldg-sim@lists.onebuilding.org">bldg-sim@lists.onebuilding.org</a><br><b>Subject:</b> Re: [Bldg-sim] Comparing ASHRAE 90.1 App G Models to Real Buildings<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal><span style='font-size:18.0pt;color:#B45F06'>I agree fully with all of the above comments and would like to add these:<o:p></o:p></span></p></div><div><ul type=disc><li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo3'><span style='font-size:13.5pt;color:#B45F06'>Even buildings that are commissioned properly will see their performance erode over time. There are hundreds of reason for this, ranging from poor maintenance to well-intentioned maintenance people not having time to monitor operations well. There is NO BUILDING that operates well for long.</span><o:p></o:p></li><li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo3'><span style='font-size:13.5pt;color:#B45F06'>Buildings often see changes in operation, occupancy and schedule. These are oftimes gradual changes over a period of years, but can be substantial</span><o:p></o:p></li></ul></div></div><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On Thu, May 21, 2015 at 10:22 AM, Nathan Kegel <<a href="mailto:nathan.kegel@iesve.com" target="_blank">nathan.kegel@iesve.com</a>> wrote:<o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a name="14d76db336d12194__MailEndCompose"><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Climate files used in the simulations versus the actual weather.</span></a><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I’m in the midst of a project that shows a variance in EUI of up to 200% just by changing the climate file for the DOE primary school. Full results to be presented in September.</span><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Add in all the other factors already mentioned, and if your 90.1 model comes anywhere close the real buildings’ it’s far more likely that the 90.1 model was extremely “lucky” than it is that the model used accurate assumptions.</span><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Regards,</span><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Nathan</span><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p><table class=MsoNormalTable border=0 cellspacing=3 cellpadding=0 width=463 style='width:347.25pt'><thead><tr><td valign=top style='padding:.75pt .75pt .75pt .75pt'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a href="http://www.iesve.com/" target="_blank"><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";color:#305C67;text-decoration:none'><img border=0 width=61 height=61 id="_x0000_i1025" src="cid:image001.png@01D093B4.9C86F130"></span></a><o:p></o:p></p></td><td valign=top style='padding:.75pt .75pt .75pt .75pt'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='font-size:13.0pt;font-family:"Calibri","sans-serif";color:#305C67'>Nathan Kegel</span></b><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";color:#305C67'><br></span><b><span style='font-size:9.0pt;font-family:"Calibri","sans-serif";color:#305C67'>Business Development Manager</span></b><o:p></o:p></p></td><td valign=top style='padding:.75pt .75pt .75pt .75pt'><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0><tr><td style='padding:0in 0in 0in 0in'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";color:#305C67'>O:</span><o:p></o:p></p></td><td style='padding:0in 0in 0in 0in'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";color:#305C67'> <a href="tel:763.276.9981" target="_blank">763.276.9981</a></span><o:p></o:p></p></td></tr><tr><td style='padding:0in 0in 0in 0in'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";color:#305C67'>M:</span><o:p></o:p></p></td><td style='padding:0in 0in 0in 0in'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";color:#305C67'> <a href="tel:415.420.9314" target="_blank">415.420.9314</a></span><o:p></o:p></p></td></tr><tr><td colspan=2 style='padding:0in 0in 0in 0in'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a href="http://www.iesve.com/" target="_blank"><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";color:#305C67'>http://www.iesve.com</span></a><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";color:#305C67'> </span><o:p></o:p></p></td></tr></table></td></tr></thead><tr><td colspan=3 style='padding:.75pt .75pt .75pt .75pt'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";color:#305C67'>Integrated Environmental Solutions Limited. Registered in Scotland No. SC151456<br>Registered Office - Helix Building, West Of Scotland Science Park, Glasgow G20 0SP</span><o:p></o:p></p></td></tr><tr><td colspan=3 style='padding:.75pt .75pt .75pt .75pt'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a href="http://www.iesve.com/disclaimer.html" target="_blank"><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";color:#305C67'>Email Disclaimer</span></a><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";color:#305C67'> </span><o:p></o:p></p></td></tr></table><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></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"'> Bldg-sim [mailto:<a href="mailto:bldg-sim-bounces@lists.onebuilding.org" target="_blank">bldg-sim-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>Maria-Lida Kou<br><b>Sent:</b> Thursday, May 21, 2015 9:17 AM<br><b>To:</b> Jacob Dunn<br><b>Cc:</b> <a href="mailto:bldg-sim@lists.onebuilding.org" target="_blank">bldg-sim@lists.onebuilding.org</a><br><b>Subject:</b> Re: [Bldg-sim] Comparing ASHRAE 90.1 App G Models to Real Buildings</span><span lang=EN-GB><o:p></o:p></span></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB> <o:p></o:p></span></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB>Jacob,<o:p></o:p></span></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB> <o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB>Happy to hear that other people are thinking the same. <o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB> <o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB>I was into this subject on my own thoughts recently.<o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB> <o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB>I would like to add in your list: Occupants' behavior actually which is not in the stage to be included into the prediction.<o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB>I would add commissioning as well along with controls simulation and controls operation.<o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB> <o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB>Apologies because I haven't worked with LEED projects but I think the above applied in general to "the performance gap".<o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB> <o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB>Really looking forward to hearing more about this subject as I am not that experienced engineer yet, but really interested in "the performance" side of buildings.<o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB> <o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB>Best,<o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB>Maria-Lida Kounadi<o:p></o:p></span></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB> <o:p></o:p></span></p></div></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB> <o:p></o:p></span></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-GB>2015-05-21 15:04 GMT+01:00 Jacob Dunn <<a href="mailto:jdunn@eskewdumezripple.com" target="_blank">jdunn@eskewdumezripple.com</a>>:<o:p></o:p></span></p><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Bldg-Sim Community – <span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I’m trying to compile a list of why it might be inappropriate to compare Appendix G models to actual consumption data. This comes about because I recently got into a debate with one of my co-workers when looking at the infamous NBI chart/study that shows little correlation to predicted and actual energy values of LEED buildings. I was trying to explain that the Appendix G model’s intent is NOT to be compared to actual consumption, as it is a modeling protocol aimed at creating consistent relative comparisons for LEED points. <span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Here are the reasons thus far that support this notion (that App G models shouldn’t be compared to actual data). Does anyone know of any resources out there that expand upon this? Or can you think other reasons?<span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <span lang=EN-GB><o:p></o:p></span></p><p>-<span style='font-size:7.0pt'> </span>Appendix G does not take into account external shading, which can be critical in urban environments for accurate energy predictions<span lang=EN-GB><o:p></o:p></span></p><p>-<span style='font-size:7.0pt'> </span>Schedules are typically not created with the intent of being predictive. Overall building hours are adhered to, but detailed schedule creation is not usually in the scope of a LEED model (or is it, in your experience?). For instance, typical plug load base values during unoccupied times are .3, this is a pretty big assumption.<span lang=EN-GB><o:p></o:p></span></p><p>-<span style='font-size:7.0pt'> </span>The App G model uses a TMY weather file, which can vary from the current weather year (I wonder on average by how much?)<span lang=EN-GB><o:p></o:p></span></p><p>-<span style='font-size:7.0pt'> </span>Infiltration values are assumed, unless blower door testing has been done (which is rare for commercial buildings).<span lang=EN-GB><o:p></o:p></span></p><p>-<span style='font-size:7.0pt'> </span>Thermostat values are modeled as consistent across the building, which is rarely the case in an actual operating building<span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Any additional insight is much appreciated!<span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><b><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#7D7773;letter-spacing:.3pt'>Jacob Dunn LEED AP BD+C</span></b><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#A9AA23;letter-spacing:.3pt'>ESKEW+DUMEZ+RIPPLE, APC</span></b><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:black;letter-spacing:.3pt'> </span><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;line-height:110%'><span style='font-size:8.0pt;line-height:110%;font-family:"Arial","sans-serif";color:#7D7773;letter-spacing:.3pt'>2014 AIA National Architecture Firm Award</span><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#7D7773;letter-spacing:.3pt'> </span><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#7D7773;letter-spacing:.3pt'>365 Canal Street Suite 3150 </span><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#7D7773;letter-spacing:.3pt'>New Orleans LA 70130</span><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#7D7773;letter-spacing:.3pt'><a href="tel:504.561.8686" target="_blank">504.561.8686</a></span><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><u><span style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#7D7773;letter-spacing:.3pt'><a href="http://www.eskewdumezripple.com/" target="_blank"><span style='color:#7D7773'>eskewdumezripple.com</span></a></span></u><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <span lang=EN-GB><o:p></o:p></span></p></div></div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><span lang=EN-GB><br>_______________________________________________<br>Bldg-sim mailing list<br><a href="http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org" 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class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>-- <o:p></o:p></p><div><div><div><div><div><div><div><div><div><div><div><div><p class=MsoNormal>James V Dirkes II, PE, BEMP, LEED AP<br>CEO/President<br>The Building Performance Team Inc.<br>1631 Acacia Dr, GR, Mi 49504<br><br>Direct: 616.450.8653<br><a href="mailto:jim@buildingperformanceteam.com" target="_blank">jim@buildingperformanceteam.com</a><br><br><a href="http://buildingperformanceteamcom" target="_blank">Website </a>l <a href="https://www.linkedin.com/pub/jim-dirkes/7/444/413" target="_blank">LinkedIn</a><o:p></o:p></p><p style='margin-top:6.0pt'><span style='font-size:13.5pt;font-family:"Calibri","sans-serif";color:blue;background:white'>The truth is still the truth, even if nobody believes it. A lie is still a lie, even if <i>everyone</i> believes it.</span><o:p></o:p></p></div></div></div></div></div></div></div></div></div></div></div></div></div><div class=MsoNormal align=center style='text-align:center'><hr size=1 width="100%" noshade style='color:#A0A0A0' align=center></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>No virus found in this message.<br>Checked by AVG - <a href="http://www.avg.com">www.avg.com</a><br>Version: 2014.0.4800 / Virus Database: 4311/9832 - Release Date: 05/21/15<o:p></o:p></p></div></body></html>