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--></style></head><body lang="EN-US" link="blue" vlink="purple"><div class="WordSection1"><div><p class="MsoNormal"><span style="color:#1F497D">Reading between the lines a bit, I believe the reviewer is probably more worried about using proposed lighting kW for the model while the baseline is using LPD that include areas of shafts or chases which could penalize the baseline unfairly. (Maybe airflow too, although you don’t mention this.)</span></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span></p><p class="MsoNormal"><span style="color:#1F497D">Clearly it is intended by 90.1 to be the center of the partition between two occupied spaces, however I guess the question here is whether the definition of the surface around the chase or column is a partion or not…so personally I’d use the center of that enclosing surface around the shaft/chase/column. There seems to be some concern by the reviewer about a noticeable area over-contributing to the baseline energy usage, so I wouldn’t use the option for “center of the chase” or “center of the column” as a possibility if you agree that this is the concern.</span></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span></p><p class="MsoNormal"><span style="color:#1F497D">David</span></p><p class="MsoNormal"><u><span style="color:black"> </span></u><span style="color:#1F497D"></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;color:black"> </span><span style="color:#1F497D"></span></p><p class="MsoNormal"><span style="color:#1F497D">David S. Eldridge, Jr., P.E., LEED AP BD+C, BEMP, BEAP, HBDP</span><span style="color:#1F497D"></span></p>
<p class="MsoNormal"><b><span style="color:#244061">Grumman/Butkus Associates</span></b><span style="color:#1F497D"></span></p><p class="MsoNormal"><u><span style="color:black"> </span></u><span style="color:#1F497D"></span></p>
<p class="MsoNormal"><span style="color:black"> </span><span style="color:#1F497D"></span></p></div><p class="MsoNormal"><span style="color:#1F497D"> </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""> <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>M. Shields<br>
<b>Sent:</b> Thursday, May 19, 2011 4:19 PM<br><b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br><b>Subject:</b> [Equest-users] Lighting Power Density</span></p></div>
</div><p class="MsoNormal"> </p><p class="MsoNormal">Good Afternoon All,</p><p class="MsoNormal"> </p><p class="MsoNormal">Hopefully this is a simple question. I recently got comments back from LEED questioning the lighting power density for some of the areas in my Appendix G model. The comments asked me to provide floor plans for the areas in question. I am using the space by space method which says area should be calculated from the center of partition walls. For the areas in question some of the walls have a chase for plumbing, some have structural columns, etc. My question is this, in my model I did not create separate zones are anything for this non habitable area, I just have an interior wall. Should the LPD be calculated to the center of the chase? To the center of the column? The center of the wall surrounding the chase? None of these will make a significant impact on my savings, however, I don’t want the reviewer to reject my number saying something such as “your floor plan included the chase when it should have stopped at the center of the wall surrounding the chase”</p>
<p class="MsoNormal"> </p><p class="MsoNormal">Thanks for any opinions or experience getting something like this passed by LEED.</p><p class="MsoNormal"> </p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Book Antiqua","serif"">____________________________<br>
Michael Shields</span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Book Antiqua","serif"">Email: <a href="mailto:mshields@fstrategies.com">mshields@fstrategies.com</a></span></p>
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