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<div class=Section1>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>As clarification, LEED v2.2 requires the use of the Performance
Rating Method from Appendix G, not the ECB method (which was used in previous
versions of LEED). In fact, in the Reference Guide section of LEED v2.2
titled “Common mistakes made using the Performance Rating Method”,
the first mistake listed is “The Energy Cost Budget Method (Section 11)
is incorrectly used rather than the Performance Rating Method (Appendix G) to
obtain EA Credit 1 credit”. <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'>Brandon – when I first read Appendix G, I was puzzled by
their motivation. Why rotate the building if you are already evenly
distributing glass? I am still not sure what the justification from
ASHRAE is on that one. I have not seen anything from USGBC that gives any
exceptions to the rotating requirement.<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:8.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Charlie Christenson, LEED AP<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Brummitt Energy Associates, Inc.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>2171 India Street, Suite B<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>San Diego, CA 92101<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>tel: 619-531-1126<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>fax: 619-531-1101<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>cchristenson@brummitt.com<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>www.brummitt.com<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>A net-zero carbon company, using www.b-e-f.org/GreenTags<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Brummitt Energy Associates, Inc. helps you achieve comfortable,
highly energy efficient, cost-effective projects by integrating the building
design with daylighting, electric lighting, and mechanical systems.
Consulting from early design through construction documentation, we specialize
in energy and daylight modeling, increasing financial incentives, and
documentation for Title 24, LEED™ and CHPS. 20 years experience
includes thousands of buildings, and more than 35 projects pursuing and
achieving LEED™ ratings, from Certified to Platinum.</span><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@gard.com
[mailto:BLDG-SIM@gard.com] <b>On Behalf Of </b>Leader, Philip<br>
<b>Sent:</b> Tuesday, April 17, 2007 1:02 PM<br>
<b>To:</b> BLDG-SIM@gard.com<br>
<b>Cc:</b> Shawn Gavras<br>
<b>Subject:</b> [BLDG-SIM] App G 2004 question<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-family:"Comic Sans MS";color:blue'>The
Appendix G is an informative appendix and is not part of Standard 90.1. It
is merely informative and does not contain requirements necessary for
conformance to the Standard.</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-family:"Comic Sans MS";color:blue'>In
the Energy Cost Budget Method section in Table 11.3 under Section 5
Building Envelope, it describes the requirements for the Proposed
Building design and the Budget Building design. The first paragraph under
the Budget Building design states.... The <em><span style='font-family:"Comic Sans MS"'>budget
building</span></em> shall have identical <em><span style='font-family:"Comic Sans MS"'>conditioned
floor</span></em> <em><span style='font-family:"Comic Sans MS"'>area</span></em>
and identical exterior dimensions and orientations as the proposed design,
except as noted in (a), (b), and (c) in this clause. </span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-family:"Comic Sans MS";color:blue'>There's
nothing in the Standard stating you must rotate the building in 90 degree
increments and average the results. We've never been asked to do it to my
knowledge by the USGBC during a LEED review of our projects.</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:13.5pt;font-family:"Comic Sans MS";
color:blue'>Philip S. Leader, PE</span> <br>
<span style='font-size:10.0pt;font-family:"Comic Sans MS";color:blue'>Director
of Mechanical Engineering</span><span style='color:blue'> <br>
</span><span style='font-size:10.0pt;font-family:"Comic Sans MS";color:blue'>Albert
Kahn Associates, Inc.</span><span style='color:blue'> <br>
</span><span style='font-size:10.0pt;font-family:"Comic Sans MS";color:blue'>7430
Second Ave.</span><span style='color:blue'> <br>
</span><span style='font-size:10.0pt;font-family:"Comic Sans MS";color:blue'>Detroit,
Michigan 48202-2798</span><span style='color:blue'> <br>
</span><span style='font-size:10.0pt;font-family:"Comic Sans MS";color:blue'>Phone:
313-202-7834</span><span style='color:blue'> <br>
</span><span style='font-size:10.0pt;font-family:"Comic Sans MS";color:blue'>FAX:
3130202-7334</span><span style='color:blue'> <br>
</span><span style='font-size:10.0pt;font-family:"Comic Sans MS";color:blue'>Email:
philip.leader@akahn.com</span><span style='color:blue'> <br>
</span><span style='font-size:10.0pt;font-family:"Comic Sans MS";color:blue'>Website:
www.albertkahn.com</span> <o:p></o:p></p>
<p class=MsoNormal><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='margin-bottom:12.0pt'><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@gard.com
[mailto:BLDG-SIM@gard.com] <b>On Behalf Of </b>Brandon Nichols<br>
<b>Sent:</b> Tuesday, April 17, 2007 3:12 PM<br>
<b>To:</b> BLDG-SIM@gard.com<br>
<b>Cc:</b> Shawn Gavras<br>
<b>Subject:</b> [BLDG-SIM] App G 2004 question</span><o:p></o:p></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Lucida Console"'>All,</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Lucida Console"'>This
is an old thread, but one I thought worth revisiting to see if there have
been any developments. Specifically we are preparing a LEED Silver
project for submittal, and while we understand he intent of the Appendix G
'multiple-orientation' and 'fenestration-leveling' requirements, our
evaluation is that they impose extensive calculation requirements for
arguably marginal returns on accuracy.</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Lucida Console"'>In
the case of our specific building (as I would suspect the case of 90%+ of all
buildings) there's simply no latitude to change the orientation.
Similarly with glass distribution, the lobby and entryway have the flexibility
to be on one side and one side only of the building, and thus distributing the
glass equally amongst all facets for the baseline model seems to add
an unnecessary level of abstraction to the comparative analyses.</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Lucida Console"'>Does
imposing the requirement for analysts to spend considerable effort
developing fictitious baselines based on building orientations and glass
distributions that have 0% chance of construction seem to be a reasonable
requisite for LEED project certifications? What I mean by
'considerable effort' is:</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Lucida Console"'>• That
the all baseline numbers for each of the four orientations would need to be
extracted from the analysis software, averaged on a spreadsheet, and
a similar extraction done for all subsequent energy efficiency measure (EEM)
comparisons. Posting these numbers from analysis software to spreadsheets
would be both time-consuming and introduce another level of potential error,
and thus require additional error-checking. </span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Lucida Console"'>• That
a new building would need to be developed, with glass redistributed equally
amongst all facets, for the four-point orientation exercise described
above. Again, while this may sound reasonable from a theoretical
standpoint, practically speaking this requirement serves to decouple
the baseline from glazing-dependent energy efficiency measures. How
meaningful is changing the U-value or shading coefficient of the
glass in an EEM in comparison to a fictitious baseline, when the glass
distribution is crucial to determining whether or not the measure is
cost-effective? As with building orientations, posting these numbers from
analysis software to spreadsheets would be both time-consuming and additionally
error-prone. </span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Lucida Console"'>All
to fulfill the requirement of deriving a fictitious baseline for use in the
comparative analyses -- no doubt these requirements were incorporated with good
intention, but practical implementation considerations seem to have not been
considered carefully enough.</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Lucida Console"'>Further,
we find the concept of comparing proposed energy efficiency measures
to a "code minimum" baseline building, oriented identically and
glazed similarly to each of the EEMs, to be intuitively more
meaningful to both the owner and project team (and thus
presumably to the LEED reviewer) than comparison to a fictitious
baseline. This approach allows the baseline to reside in the analysis
software, and EEM comparisons accomplished using the built-in 'parametric run'
features of the analysis software (eQuest and others) to reduce the
time-consuming error-prone tediousness of extracting and posting numbers to
a spreadsheet for comparative evaluation.</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Lucida Console"'>Has
anyone had success in obtaining LEED project approval when excepting these
'building orientation averaging' and 'glazing-area
leveling' requirements? What is required in terms of the LEED
application to waive these requirements?</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Lucida Console"'>Also,
does anyone know if these requirements have been identified for relaxation
or revision in the next LEED update?</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Lucida Console"'>Regards</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Lucida Console"'>Brandon
Nichols, PE<br>
Mechanical<br>
HARGIS ENGINEERS<br>
600 Stewart St<br>
Suite 1000<br>
Seattle, WA 98101<br>
d | 206.436.0400 c | 206.228.8707<br>
o | 206.448.3376 f | 206.448.4450<br>
<a href="http://www.hargis.biz">www.hargis.biz</a></span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>_________________________________________________<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>At 08:41 AM 1/24/2006, Bill Bahnfleth wrote:<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>Modeling the building in the specified orientations and
averaging gives an orientation-neutral baseline.<br>
<br>
Appendix G has been developed with substantial input from experts at PNNL and
after discussions with USGBC. Glad to hear that modelers are ignoring whatever
they don't understand or find inconvenient.<br>
<br>
Bill Bahnfleth<br>
Member, ECB Subcommittee<br>
<br>
At 09:42 PM 1/23/2006, Peter Alspach wrote:<o:p></o:p></p>
</div>
<blockquote style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 12.0pt;
margin-left:0in;margin-top:5.0pt;margin-bottom:5.0pt'><pre> A bit of a throw-back to the old 1989 version then?<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>-----Original Message-----<o:p></o:p></pre><pre>From: Kevin Warren [<a
href="mailto:kevin@warren-energy.com">mailto:kevin@warren-energy.com</a>]<o:p></o:p></pre><pre>Sent: Monday, January 23, 2006 5:46 PM<o:p></o:p></pre><pre>To: peter.alspach@arup.com; bldg-sim@gard.com<o:p></o:p></pre><pre>Subject: RE: [bldg-sim] App G 2004 question<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Peter,<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>I believe the intent is to give you a way to get some savings from<o:p></o:p></pre><pre>orienting your building with an eye toward savings. If you pay attention<o:p></o:p></pre><pre>to the sun in your design (passive solar and/or daylighting), you should<o:p></o:p></pre><pre>get some savings relative to the average of the rotated orientations.<o:p></o:p></pre><pre>Similarly, you could get a penalty if you have too much west-facing<o:p></o:p></pre><pre>glass.<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>I'm not sure how strictly this provision is being enforced. Most of the<o:p></o:p></pre><pre>modelers I have spoken to ignore it, but that is a very unscientific<o:p></o:p></pre><pre>sample.<o:p></o:p></pre><pre>These modelers may not be submitting to USGBC.<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>For a utility incentive program, it often does not make sense to do this<o:p></o:p></pre><pre>rotation. Those incentive programs typically care about the savings from<o:p></o:p></pre><pre>incremental changes to the design, particularly those changes that carry<o:p></o:p></pre><pre>an incremental cost. I'm not sure how one would determine an incremental<o:p></o:p></pre><pre>cost for your building's orientation, so it is not a factor that would<o:p></o:p></pre><pre>typically be eligible.<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Kevin Warren, P.E., CEM, LEED AP<o:p></o:p></pre><pre>Warren Energy Engineering, LLC<o:p></o:p></pre><pre>(610) 255-3798 ph<o:p></o:p></pre><pre>(610) 255-3406 f<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>-----Original Message-----<o:p></o:p></pre><pre>From: bldg-sim@gard.com [<a
href="mailto:bldg-sim@gard.com%5DOn">mailto:bldg-sim@gard.com]On</a> Behalf Of Peter<o:p></o:p></pre><pre>Alspach<o:p></o:p></pre><pre>Sent: Monday, January 23, 2006 8:04 PM<o:p></o:p></pre><pre>To: bldg-sim@gard.com<o:p></o:p></pre><pre>Subject: [bldg-sim] App G 2004 question<o:p></o:p></pre><pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre>Anyone out there know the source of why one would be required to<o:p></o:p></pre><pre>simulate a building in an orientation that it is not in? This doesn't<o:p></o:p></pre><pre>really make any sense to me - am I missing something?<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Peter<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>-----Original Message-----<o:p></o:p></pre><pre>From: bldg-sim@gard.com [<a
href="mailto:bldg-sim@gard.com">mailto:bldg-sim@gard.com</a>] On Behalf Of Rohini<o:p></o:p></pre><pre>Brahme<o:p></o:p></pre><pre>Sent: Monday, January 23, 2006 1:13 PM<o:p></o:p></pre><pre>To: bldg-sim@gard.com<o:p></o:p></pre><pre>Subject: [bldg-sim] App G 2004 question<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>I have a question about the Appendix G in 90.1, 2004.<o:p></o:p></pre><pre>In Table G3.1 the baseline building is to be simulated as follows:<o:p></o:p></pre><pre>" Orientation. The baseline building performance shall be generated by<o:p></o:p></pre><pre>simulating the building with its actual orientation and again after<o:p></o:p></pre><pre>rotating the entire building 90, 180, 270 degrees, then averaging the<o:p></o:p></pre><pre>results. The building shall be modeled so that it does not shade<o:p></o:p></pre><pre>itself."<o:p></o:p></pre><pre>What does --- the building shall be modeled so that it does not shade<o:p></o:p></pre><pre>itself ---- mean?<o:p></o:p></pre><pre>Does it mean that if there is, for example, an L shaped building (which<o:p></o:p></pre><pre>self shades), it has to be modeled as square? rectangle?<o:p></o:p></pre><pre>Any thoughts on this appreciated.<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Thanks<o:p></o:p></pre><pre>- Rohini<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>==================<o:p></o:p></pre><pre>You received this e-mail because you are subscribed to the<o:p></o:p></pre><pre>BLDG-SIM@GARD.COM mailing list. To unsubscribe from this mailing list<o:p></o:p></pre><pre>send a blank message to BLDG-SIM-UNSUBSCRIBE@GARD.COM<o:p></o:p></pre><pre>____________________________________________________________<o:p></o:p></pre><pre>Electronic mail messages entering and leaving Arup business systems are<o:p></o:p></pre><pre>scanned for acceptability of content and viruses<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>==================<o:p></o:p></pre><pre>You received this e-mail because you are subscribed to the<o:p></o:p></pre><pre>BLDG-SIM@GARD.COM mailing list. To unsubscribe from this mailing list<o:p></o:p></pre><pre>send a blank message to BLDG-SIM-UNSUBSCRIBE@GARD.COM<o:p></o:p></pre><pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre>You received this e-mail because you are subscribed<o:p></o:p></pre><pre>to the BLDG-SIM@GARD.COM mailing list. To unsubscribe<o:p></o:p></pre><pre>from this mailing list send a blank message to<o:p></o:p></pre><pre>BLDG-SIM-UNSUBSCRIBE@GARD.COM<o:p></o:p></pre></blockquote>
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