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<font size="-1"><font face="Arial"><big>Hi Vikram,<br>
Don't know if you already have an answer to this.<br>
<br>
Anyways, this is what my understanding is -- The lighting power for
tradable surfaces / tradable linear feet would need to be calculated
for all such surfaces / linear feet. Since facades fall in the
non-tradable surfaces category, one would need to consider only the
facade that you are planning to light-up in the Designed case. This is
confirmed by the fact how the text in the Table is read as:<br>
<br>
". . . for each illuminated wall or surface . . ."<br>
<br>
Besides that, to comply with the light pollution reduction credit point
(SSc8), the lighting power needs to be half of what the Table you
referenced is, i.e. 0.1W/sf for each illuminated wall or surface or
2.5W/ft for each illuminated wall or surface length. Finally, to
further comply with SSc8, all other surfaces / linear feet need to be
80% of what is referenced in the Table 9.4.5. There are other SSc8
credit requirements that I won't go into right now, considering you are
perhaps looking at this from the perspective of energy modeling.<br>
<br>
Hope rest is all well with you.<br>
<br>
cheers,<br>
Neeraj</big><br>
<br>
Neeraj Kapoor<br>
t: +91.99581.70018<br>
Kalpakrit Sustainable Environments Pvt. Ltd.<br>
New Delhi, India<br>
</font></font><br>
<br>
Vikram Sami wrote:
<blockquote
cite="mid:55BA83825A482144A8637F9CAA981F7613EEE13C@las-mail.lordaecksargent.internal"
type="cite">
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<p class="MsoNormal">James Hess brought up a point about exterior
lighting power
in 90.1-2004 models. I’m currently finishing up a LEED 2.2 model, and
am
setting up my exterior lighting loads for my base building. I used
table9.4..5
to calculate the allowable exterior lighting for this and it comes out
to 4.6
kW for a 10,00 ft2 building. Seems high. The biggest part of this load
is the
building façade component which allows 0.2 w/lf for the facades. How do
you
calculate this – do you assume ALL the facades of the base building
will
be lit – even if they are not lit in the designed building? </p>
<p class="MsoNormal"> </p>
<p class="MsoNormal" style=""><b><span
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</blockquote>
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