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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 model garages all the time. I haven't done a building in a while that didn't have some sort of conditioned space in the garages that needed an adjacent unconditioned space (but without exterior walls) to properly analyze. Plus for LEED these days, they want all of your building areas in the model to match those entered by the architect in the PI forms. So you are supposed to model garage elevator lobbies, semi-heated mechanical spaces, main electric rooms, unheated garage space, etc. <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, my garage at work has windows :)<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'>-James<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"'> Pasha Korber-Gonzalez [mailto:pasha.pkconsulting@gmail.com] <br><b>Sent:</b> Thursday, October 20, 2011 6:33 AM<br><b>To:</b> deepika khowal<br><b>Cc:</b> James Hansen; equest-users@lists.onebuilding.org<br><b>Subject:</b> Re: [Equest-users] wwr calculation<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>I disagree with both of you.<br><br>First of all, who models Garages in their models anyway? What a waste of time.---this scews the gross floor area, and nothing in a parking garage impacts the HVAC equipment loads of the conditioned spaces....you can always input your garage vent fans and lighting as single exterior load input numbers in your model which simplifies the whole modeling project and billable time spent WITHOUT compromising on the calculations of energy use....<br><br>Second of all---poor example for offering windows in a parking garage--this is never real life, and a non-applicable example doesn't "hold water". At least give an example that is comparable to real life situations... Parking garages are either open air, or underground (without fenestration...) Have you ever had a project where Mechanical cooling needed to be provided to a parking garage? I hope not because these are considered transient space types.<br><br>If you are modeling your LEED buildings according to appendix G --90.1 you do not include the above grade garage wall area in your gross building WWR calculation.<br><br>FOURTH---Deepika---you are modeling a residential home from your picture you sent us. YOU CANNOT USE ASHRAE STANDARD 90.1 TO MODEL LOW-RISE RESIDENTIAL BUILDINGS!<br><br>You are using and interpreting the wrong standard, you need to use ASHRAE Standard 90.2 for Non-commerical Residential buildings. You will need to use this new reference as everything you are referring to does not apply for your project or your project model.<br> <br>The real answer to your question is the Nebraska Cornhusker football team IS BETTER than the Virgina Tech Hoakies! GO BIG RED!!!!<br>Pasha<o:p></o:p></p><div><p class=MsoNormal>On Wed, Oct 19, 2011 at 3:15 PM, deepika khowal <<a href="mailto:deepika.khowal@gmail.com">deepika.khowal@gmail.com</a>> wrote:<o:p></o:p></p><p class=MsoNormal>I agree with James .<o:p></o:p></p><div><p class=MsoNormal>if its unconditioned space, we should not claim the window area . that way we can have higher WWR for rest of conditioned spaces.<o:p></o:p></p><div><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On Wed, Oct 19, 2011 at 1:56 PM, James Hansen <<a href="mailto:JHANSEN@ghtltd.com">JHANSEN@ghtltd.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;color:#1F497D'>I don't think I agree with this advice</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;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;color:#1F497D'>Under ASHRAE 90.1-2007, Section 5.2.1, part of the requirements for the PRESCRIPTIVE method requires that "the vertical fenestration area does not exceed 40% of the gross wall area for each <b><i>space-conditioning category</i></b>". </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;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;color:#1F497D'>The definition for "space conditioning category" simply says:</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;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;color:#1F497D'> non-residential conditioned space,</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;color:#1F497D'> residential conditioned space, and</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;color:#1F497D'> nonresidential and residential semiheated space</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;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;color:#1F497D'>It doesn't list unconditioned space. Now I know this info is listed in the prescriptive requirements, but if it was my model, and I had a garage that had 100% window area, there is no way I would count that towards the gross WWR, particularly if I was applying for LEED, and these inconsequential windows pushed my WWR above 40% and thus penalized my proposed building. In fact, I might not even model the windows, unless I felt they were going to superheat the garage and start impacting adjacent space cooling loads.</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;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;color:#1F497D'>Just my opinion...</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;color:#1F497D'> </span><o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='font-size:11.0pt;color:teal'>GHT Limited<br></span></b><b><span style='font-size:11.0pt;color:#1F497D'>James Hansen, P.E., LEED AP</span></b><span style='font-size:10.0pt;color:#1F497D'><br>Senior Associate<br>1010 N. Glebe Road, Suite 200<br>Arlington, VA 22201-4749<br>703-243-1200 (office)</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;color:#1F497D'>703-338-5754 (cell)<br>703-276-1376 (fax)</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;color:#1F497D'><a href="http://www.ghtltd.com/" title="http://www.ghtltd.com/">www.ghtltd.com</a></span><o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='font-size:10.0pt'>From:</span></b><span style='font-size:10.0pt'> <a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a> [mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>PKConsulting<br><b>Sent:</b> Wednesday, October 19, 2011 4:04 PM<br><b>To:</b> deepika khowal<br><b>Cc:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br><b>Subject:</b> Re: [Equest-users] wwr calculation</span><o:p></o:p></p></div></div><div><div><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'>It doesn't change for unconditioned or conditioned. It is only a function of gross wall area (ft2) and window area (ft2). Don't think too hard about this. You are looking for a needle in the wrong haystack. This one is straight forward with no tricks...<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><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>WWR is for whole bldg not space by space.<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><br>Pashalu<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><br>On Oct 19, 2011, at 12:20 PM, deepika khowal <<a href="mailto:deepika.khowal@gmail.com">deepika.khowal@gmail.com</a>> wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Thanks Pasha<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'>yes , i have been using LV-d report.<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'>Am confused how it work for an unconditioned space.<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>Thanks<o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>On Wed, Oct 19, 2011 at 11:01 AM, PKConsulting <<a href="mailto:pasha.pkconsulting@gmail.com">pasha.pkconsulting@gmail.com</a>> wrote:<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>It should be the gross wall area for everything above ground. Use the lv-d report to find the numbers to calculate the overall WWR for your entire bldg. There is a summary page at the end of the lv-d report. Look for the line called-'all walls'. You can use those numbers to calc WWR percentage.<br><br>Pashalu<o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><br>On Oct 19, 2011, at 11:39 AM, deepika khowal <<a href="mailto:deepika.khowal@gmail.com">deepika.khowal@gmail.com</a>> wrote:<br><br>> Hi all<br>><br>> I have a question about calculating WWR.<br>> for example, if the south wall area is 700sf and total window area is 70sf then the WWR should be 10%.<br>> but if 50% of south wall is part of a garage and is unconditioned, then in calculating WWR , should I include only the wall area for conditioned space or it should include complete facade?<br>> Thanks<br>><br>> Deepika<br>><br>><br>><br>><o:p></o:p></p></div></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>> <image.png><br>> _______________________________________________<br>> Equest-users mailing list<br>> <a href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</a><br>> To unsubscribe from this mailing list send a blank message to <a href="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</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></div></blockquote></div></div></div><div class=MsoNormal align=center style='text-align:center'><hr size=2 width="100%" align=center></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. 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