<br><font size=2 face="sans-serif">Can you not apply various fenestrations
and shading to the model without having to change its orientation? For
an existing building, including LEED EB, what additional benefit could
be gained by rotating the model since you cannot change the orientation?</font>
<br><font size=2 face="sans-serif">_____________________________________________<br>
Edward A. Decker<br>
</font>
<br>
<br>
<br>
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<tr valign=top>
<td width=40%><font size=1 face="sans-serif"><b>"Leonard Sciarra"
<leonard_sciarra@gensler.com></b> </font>
<br><font size=1 face="sans-serif">Sent by: BLDG-SIM@gard.com</font>
<p><font size=1 face="sans-serif">11/29/2007 06:18 PM</font>
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<div align=center><font size=1 face="sans-serif">Please respond to<br>
leonard_sciarra@gensler.com</font></div></table>
<br>
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<td>
<div align=right><font size=1 face="sans-serif">To</font></div>
<td><font size=1 face="sans-serif"><BLDG-SIM@gard.com></font>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">cc</font></div>
<td>
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<td>
<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td><font size=1 face="sans-serif">[BLDG-SIM] LEED Building Orientation</font></table>
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<td></table>
<br></table>
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<br>
<br><font size=2 color=blue face="Arial">This is true, however, even with
an existing building, you as the designer/engineer have the option of "working"
the facades and applying appropriate fenestration, shading, etc... you
can still make good/bad decisions and the fact that your footprint is fixed
should not give the design team a waiver from the fact that the sun still
rises in the east and sets in the west. In fact it may be a benefit
if perhaps your building is shaded on the west by itself.</font>
<br><font size=3> </font>
<br><font size=2 face="Arial">Leonard Sciarra, AIA, LEED ap</font>
<br><font size=2 face="Arial">312.577.6580 (Dir)</font>
<br><font size=2 face="Arial">G E N S L E R | Architecture & Design
Worldwide</font>
<br><font size=2 face="Arial">30 West Monroe Street</font>
<br><font size=2 face="Arial">Chicago IL, 60603</font>
<br><font size=2 face="Arial">312.456.0123</font>
<br><font size=2 face="Arial">leonard_sciarra@gensler.com </font>
<p><font size=3> </font>
<br>
<br>
<hr><font size=2 face="Tahoma"><b>From:</b> BLDG-SIM@gard.com [mailto:BLDG-SIM@gard.com]
<b>On Behalf Of </b>Ross-Bain, Jeff<b><br>
Sent:</b> Thursday, November 29, 2007 2:40 PM<b><br>
To:</b> BLDG-SIM@gard.com<b><br>
Cc:</b> keith_lane@g-g-d.com<b><br>
Subject:</b> [BLDG-SIM] LEED Building Orientation</font><font size=3><br>
</font>
<br><font size=2 color=blue face="Arial">Here is my question to and response
from the USGBC regarding this issue:</font>
<br><font size=2 color=blue face="Arial"> </font>
<br><font size=3 face="Times New Roman"> </font>
<br><font size=2 color=blue face="Arial">Dear LEED Info,</font>
<br><font size=2 color=blue face="Arial"> </font>
<br><font size=2 color=blue face="Arial">There has been a lot of chat on
this item and I wonder if there is a USGBC position – I found no reference
to this in the CIR’s:</font>
<br><font size=2 color=blue face="Arial"> </font>
<br><font size=2 color=blue face="Arial">Do existing buildings undergoing
renovation require the four-point compass orientation analysis?</font>
<br><font size=2 color=blue face="Arial"> </font>
<br><font size=2 color=blue face="Arial"> </font>
<br><font size=2 color=blue face="Arial"> </font>
<br><font size=2 face="Calibri">Jeffrey,</font>
<br><font size=2 face="Calibri"> </font>
<br><font size=2 face="Calibri">If the existing building being renovated
is pursuing LEED-NC rather than LEED-EB, then it would indeed be required
to undergo the specified analysis. This analysis is used to establish
the baseline for energy performance using the ASHRAE standard. LEED
doesn’t have any specific exemptions for existing buildings in this requirement,
but if ASHRAE has some kind of exemption, we will honor that.</font>
<br><font size=2 face="Calibri"> </font>
<br><font size=2 face="Calibri"> </font>
<br><font size=2 color=blue face="Arial">So I guess the question then becomes
an interpretation of the Appendix G (Table G3.1 (f)) comment for existing
buildings. Rotate or not?</font>
<br><font size=2 color=blue face="Arial"> </font>
<br><font size=2 color=blue face="Arial">My take has always been that new
buildings have the option to consider orientation but existing buildings
cannot be re-oriented so rotating the model does not really prove anything.
</font>
<br><font size=2 color=blue face="Arial"> </font>
<br><font size=2 color=blue face="Arial">Any 90.1 code committee members
or others out there have an interpretation?</font>
<br><font size=2 color=blue face="Arial"> </font>
<br><font size=2 color=blue face="Arial">Regards,</font>
<p><font size=2 color=#000080 face="Arial"><b><i>Jeffrey G. Ross-Bain,
PE, LEED</i></b></font><font size=3 color=blue face="Times New Roman">
</font><font size=1 color=blue face="Arial"><br>
Smith Dalia Architects</font><font size=3 color=blue face="Times New Roman">
</font><font size=1 color=blue face="Arial"><br>
621 North Ave NE</font><font size=3 color=blue face="Times New Roman">
</font><font size=1 color=blue face="Arial"><br>
Suite C-140</font><font size=3 color=blue face="Times New Roman"> </font><font size=1 color=blue face="Arial"><br>
Atlanta, GA, 30308</font><font size=3 color=blue face="Times New Roman">
</font><font size=1 color=blue face="Arial"><br>
404-892-2443</font><font size=3 color=blue face="Times New Roman"> <u><br>
</u></font><a href=http://www.smithdalia.com/><font size=1 color=blue face="Tahoma"><u>www.smithdalia.com</u></font></a><font size=3 color=blue face="Times New Roman">
</font>
<p><font size=5 color=#008000 face="Webdings">P</font><font size=2 color=#000080 face="Times New Roman">
</font><font size=2 color=#008000 face="Arial"><b>Consider the environment.</b></font><font size=2 color=blue face="Times New Roman">
</font><font size=2 color=#008000 face="Arial"><b>Please don't print this
e-mail unless you really need to.</b></font>
<div align=center>
<br>
<hr></div>
<br><font size=2 face="Tahoma"><b>From:</b> BLDG-SIM@gard.com [mailto:BLDG-SIM@gard.com]
<b>On Behalf Of </b>Neuhauser, Ken<b><br>
Sent:</b> Thursday, November 29, 2007 2:31 PM<b><br>
To:</b> BLDG-SIM@gard.com<b><br>
Cc:</b> keith_lane@g-g-d.com<b><br>
Subject:</b> [BLDG-SIM] LEED Building Orientation</font>
<br><font size=3 face="Times New Roman"> </font>
<br><font size=2 color=#000080 face="Arial">I am not the authority, Keith,
but I believe that your interpretation (that existing buildings do not
get rotated in the baseline) is consistent with the intent of Appendix
G. In new construction, the decisions regarding building orientation
will affect performance and that performance should be measured against
the baseline (although, there are cases, such as a building that adjoins
buildings to either side, where rotating the baseline through all four
orientations does not make sense). If you’re improving an existing
building, the existing conditions of building enclosure components, including
orientation, are an appropriate baseline. When we apply Appendix
G to existing buildings, we have also found that “existing building envelopes”
sometimes needs to be parsed into existing building envelope components.
For example, in a mill rehab, the bearing walls may be serviceable
and appropriately modeled “as is” in the baseline, but missing windows
or windows that are clearly not serviceable we model as per the ASHRAE
minimum compliance.</font>
<br><font size=2 color=#000080 face="Arial"> </font>
<br><font size=2 color=#000080 face="Arial">You should note, also, that
an addendum to the standard has removed the provision in the table under
G3.1, 5c to distribute windows uniformly in horizontal bands across the
four orientations. That should make all of our lives easier.</font>
<br><font size=2 color=#000080 face="Arial"> </font>
<br><font size=2 color=#000080 face="Arial">Regards,</font>
<br><font size=2 color=#000080 face="Arial">Ken Neuhauser, M.Arch, MSc.Arch,
LEED AP</font>
<br><font size=2 color=#000080 face="Arial"><i>Architectural Project Manager</i></font>
<br><font size=2 color=#000080 face="Arial">Conservation Services Group,
Inc.</font>
<br><font size=1 color=#000080 face="Arial">40 Washington Street</font>
<br><font size=1 color=#000080 face="Arial">Westborough, MA 01581</font>
<br><font size=1 color=#000080 face="Arial">Ph. 508 836-9500 ext. 13226</font>
<br><font size=1 color=#000080 face="Arial">Fax 508 836-3181</font>
<br><a href=http://www.csgrp.com/><font size=1 color=blue face="Arial"><u>www.csgrp.com</u></font></a><font size=1 color=#000080 face="Arial">
</font>
<br><font size=3 face="Times New Roman"> </font>
<br><font size=2 color=#000080 face="Arial"> </font>
<br><font size=2 color=#000080 face="Arial"> </font>
<div align=center>
<br>
<hr></div>
<br><font size=2 face="Tahoma"><b>From:</b> BLDG-SIM@gard.com [mailto:BLDG-SIM@gard.com]
<b>On Behalf Of </b>Keith Lane<b><br>
Sent:</b> Tuesday, November 27, 2007 2:40 PM<b><br>
To:</b> BLDG-SIM@gard.com<b><br>
Subject:</b> [BLDG-SIM] LEED Building Orientation</font>
<br><font size=3 face="Times New Roman"> </font>
<br><font size=2 face="Arial">I am modeling an existing building for Energy
& Atmosphere Credit 1: Optimize Energy Performance. In LEED and table
G3.1 No. 5(a) of ASHREA Standard 90.1-2004, it states that “the baseline
building performance shall be generated by simulating the building with
its actual orientation and again after rotating the entire building 90,
180, 270 degrees, then averaging the results”. However table G3.1 No.
5(f) of ASHREA Standard 90.1-2004 states: “for existing building envelopes,
the baseline building design shall reflect existing conditions prior to
any revisions that are part of the scope of work being evaluated.” Would
this mean that you do not need to simulate the building for the four orientations?
It just doesn’t seem to make sense to simulate the building in such a
manner if it is existing. I am new energy modeling for LEED credit and
sincerely appreciate any assistance.</font>
<br><font size=2 face="Arial"> </font>
<br><font size=2 face="Arial">Thank you,</font>
<br><font size=2 face="Arial"> </font>
<br><font size=2 face="Times New Roman"><b><i>Keith Lane, LEED AP</i></b></font>
<br><font size=2 face="Times New Roman"><b><i>Mechanical Engineer</i></b></font>
<br><font size=4 color=red face="Arial Rounded MT Bold">Garcia.Galuska.DeSousa</font>
<br><font size=2 face="Arial"><i>Consulting Engineers
Inc.
</i></font>
<br><font size=2 face="Arial Narrow">370 Faunce Corner Road, Dartmouth,
MA 02747 </font>
<br><font size=2 face="Arial Narrow">p.508.998.5700
f.
508.998.0883</font>
<br><font size=3 face="Times New Roman"> </font>
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