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<DIV>Arvinder,</DIV>
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<DIV>I got the interpretation from one of the LEED reviewers. And I think it <BR>agrees with how you show compliance for non-tradable surfaces.</DIV>
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<DIV>Weixiu</DIV>
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<B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> Arvinder Dang <Arvinder.Dang@som.com><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> Robby Oylear <robbyo@rushingco.com>; "bldg-sim@lists.onebuilding.org" <bldg-sim@lists.onebuilding.org><BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Fri, February 5, 2010 4:38:16 AM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [Bldg-sim] Exterior Lighting Power Calculation for Building Facades<BR></FONT><BR>
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<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Calibri', 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Weixiu</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Calibri', 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Are you sure about your interpretation of the non-tradable surfaces. If I understand correctly what you are saying is that even though my proposed design uses less lighting power compared to the baseline for the non-tradable surfaces I cannot get an benefit from those savings.</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Calibri', 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"> </SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Calibri', 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"> My understanding was that total of tradable and nontradable should be less than the overall allowance +5% additional unrestricted allowance. </SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Calibri', 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Each category of tradable does not have to comply prescriptively and can be higher than base allowance in some cases and have increased savings in another. For example my overall lighting energy use can be higher for say parking area compared to the base allowance as long as I compensate that additional power by increased savings in another category say plaza area.</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Calibri', 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">On the contrary one has to meet the prescriptive requirements for each category of non tradable surfaces and cannot exceed the allowance. Increased building façade lighting cannot be compensated by reduced gatehouse inspection station lighting.</SPAN></P>
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<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Calibri', 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Can someone please confirm this. </SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Calibri', 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">In my model I have significant savings in non-tradable lighting and I have been modeling Ashrae allowance for non tradable area based on area being lit in base case and actually proposed design wattage and lighting power in the proposed case which is much lower. </SPAN></P>
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<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Calibri', 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Thanks</SPAN></P>
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<P class=MsoNormal><B><SPAN style="FONT-FAMILY: 'Tahoma', 'sans-serif'; FONT-SIZE: 10pt">From:</SPAN></B><SPAN style="FONT-FAMILY: 'Tahoma', 'sans-serif'; FONT-SIZE: 10pt"> bldg-sim-bounces@lists.onebuilding.org [mailto:bldg-sim-bounces@lists.onebuilding.org] <B>On Behalf Of </B>Robby Oylear<BR><B>Sent:</B> Friday, February 05, 2010 5:54 AM<BR><B>To:</B> bldg-sim@lists.onebuilding.org<BR><B>Subject:</B> Re: [Bldg-sim] Exterior Lighting Power Calculation for Building Facades</SPAN></P></DIV></DIV>
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<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Calibri', 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">Weixiu,</SPAN></P>
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<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Calibri', 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">The problem I am having is that I do not understand how to correctly calculate the baseline power allowance. Part of the mandatory provisions of section 9.4.5 states that you cannot exceed the baseline exterior lighting power allowance with your proposed building. By incorrectly calculating the baseline exterior lighting and showing this in my model the LEED reviewer has flagged my EAp2 credit for denial due to not complying with the mandatory provisions.</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Calibri', 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"> </SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Calibri', 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt">In short, I need to reply back with a corrected baseline lighting power allowance, which I am having trouble with due to the unclear definition of “illuminated wall”.</SPAN></P>
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<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Franklin Gothic Demi', 'sans-serif'; COLOR: navy; FONT-SIZE: 11pt">Robby Oylear,</SPAN><SPAN style="FONT-FAMILY: 'Franklin Gothic Demi', 'sans-serif'; COLOR: #004080; FONT-SIZE: 11pt"> </SPAN><SPAN style="FONT-FAMILY: 'Franklin Gothic Demi', 'sans-serif'; COLOR: navy; FONT-SIZE: 11pt">LEED</SPAN><SPAN style="FONT-FAMILY: 'Franklin Gothic Demi', 'sans-serif'; COLOR: navy; FONT-SIZE: 8pt">®</SPAN><SPAN style="FONT-FAMILY: 'Franklin Gothic Demi', 'sans-serif'; COLOR: navy; FONT-SIZE: 11pt"> AP</SPAN><SPAN style="FONT-FAMILY: 'Franklin Gothic Demi', 'sans-serif'; COLOR: #004080; FONT-SIZE: 11pt"></SPAN></P>
<P class=MsoNormal><I><SPAN style="FONT-FAMILY: 'Calibri', 'sans-serif'; COLOR: navy; FONT-SIZE: 10pt">Mechanical Engineer</SPAN></I></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Calibri', 'sans-serif'; COLOR: navy; FONT-SIZE: 10pt">direct: 206.788.4571</SPAN></P>
<P class=MsoNormal><I><SPAN style="FONT-FAMILY: 'Calibri', 'sans-serif'; COLOR: navy; FONT-SIZE: 10pt">cell: 206.354.2721</SPAN></I></P>
<P class=MsoNormal><U><SPAN style="FONT-FAMILY: 'Arial', 'sans-serif'; COLOR: blue; FONT-SIZE: 7.5pt">www.</SPAN></U><SPAN style="FONT-FAMILY: 'Arial', 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 8pt"><A title=blocked::http://www.rushingco.com/ href="http://www.rushingco.com/" rel=nofollow target=_blank><SPAN style="FONT-SIZE: 7.5pt">rushingco.com</SPAN></A></SPAN><SPAN style="FONT-FAMILY: 'Calibri', 'sans-serif'; COLOR: #1f497d; FONT-SIZE: 11pt"></SPAN></P></DIV>
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<P class=MsoNormal><B><SPAN style="FONT-FAMILY: 'Tahoma', 'sans-serif'; FONT-SIZE: 10pt">From:</SPAN></B><SPAN style="FONT-FAMILY: 'Tahoma', 'sans-serif'; FONT-SIZE: 10pt"> bldg-sim-bounces@lists.onebuilding.org [mailto:bldg-sim-bounces@lists.onebuilding.org] <B>On Behalf Of </B>weixiu kong<BR><B>Sent:</B> Thursday, February 04, 2010 10:00 AM<BR><B>To:</B> Robby Oylear; bldg-sim@lists.onebuilding.org<BR><B>Subject:</B> Re: [Bldg-sim] Exterior Lighting Power Calculation for Building Facades</SPAN></P></DIV></DIV>
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<P class=MsoNormal>Robby,</P></DIV>
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<P class=MsoNormal>My understanding is: since this is a non-tradable surface, base line and proposed design should be the same even though it is well below allowances.</P></DIV>
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<P class=MsoNormal>Thanks,</P></DIV>
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<P class=MsoNormal>Weixiu</P></DIV>
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<P style="MARGIN-BOTTOM: 12pt" class=MsoNormal><B><SPAN style="FONT-FAMILY: 'Tahoma', 'sans-serif'; FONT-SIZE: 10pt">From:</SPAN></B><SPAN style="FONT-FAMILY: 'Tahoma', 'sans-serif'; FONT-SIZE: 10pt"> Robby Oylear <robbyo@rushingco.com><BR><B>To:</B> bldg-sim@lists.onebuilding.org<BR><B>Sent:</B> Thu, February 4, 2010 10:21:28 AM<BR><B>Subject:</B> [Bldg-sim] Exterior Lighting Power Calculation for Building Facades</SPAN></P>
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<P class=MsoNormal>Can anyone with experience showing compliance with ASHRAE 90.1-2004 section 9.4.5 enlighten me as how the baseline calculation should be done? </P>
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<P class=MsoNormal>The confusion I’m having is with the definition of an illuminated wall or surface length when applying the 5.0 W/linear foot allowance for building façades. How is the lineal footage of an illuminated wall determined? </P>
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<P class=MsoNormal>For example, if a 100’ wide wall has one exterior lighting fixture on it at the center, is the entire wall considered to be illuminated and thus the baseline lighting power allowance is 500W? Or is there some method of determining the actual portion of the wall that is illuminated?</P>
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<P class=MsoNormal>This came up on a LEED project where I had applied table 9.4.5 as conservatively as possible and only considered a portion of the wall to be illuminated at each fixture. </P>
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<P class=MsoNormal>Any help would be greatly appreciated.</P>
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<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Franklin Gothic Demi', 'sans-serif'">Robby Oylear, LEED</SPAN><SPAN style="FONT-FAMILY: 'Franklin Gothic Demi', 'sans-serif'; FONT-SIZE: 8pt">®</SPAN><SPAN style="FONT-FAMILY: 'Franklin Gothic Demi', 'sans-serif'"> AP</SPAN></P>
<P class=MsoNormal><I><SPAN style="FONT-SIZE: 10pt">Mechanical Engineer</SPAN></I></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt">direct: 206.788.4571</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt">cell: 206.354.2721</SPAN></P>
<P style="MARGIN-BOTTOM: 3pt" class=MsoNormal><U><SPAN style="COLOR: blue; FONT-SIZE: 7.5pt">www.</SPAN></U><SPAN style="FONT-FAMILY: 'Arial', 'sans-serif'; FONT-SIZE: 8pt"><A title=blocked::http://www.rushingco.com/ href="http://www.rushingco.com/" rel=nofollow target=_blank><SPAN style="FONT-SIZE: 7.5pt">rushingco</SPAN><SPAN style="FONT-FAMILY: 'Calibri', 'sans-serif'; FONT-SIZE: 7.5pt">.com</SPAN></A></SPAN></P>
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