Big Green: LEED SS8 - LZ3 vs LZ4

[Michael Barber]

John,
 
You may want to take existing light levels to support the LZ4
classification.  You can build a spreadsheet with measured ambient
levels for common areas such as streets (vehicular circulation), parking
areas, sidewalks (pedestrian circulation), facade illumination, etc.  By
doing this and using photographs you at least establish a baseline of
existing conditions.  Then prepare calculations for any proposed
lighting, and comparing it to the existing light levels (hopefully they
will be less than or equal to them), USGBC may find this acceptable.
 
We were doing some retail work - where high ambient light levels existed
- and we were attempting to make a similar argument; however the project
has stalled.  I'm sorry I can't give you definitive proof that the
strategy worked or not.
 
Best,
Mike
 

Michael Barber, LEED AP

Principal

 

TLP The Lighting Practice, Inc

www.thelightingpractice.com

 

Member of the U.S. Green Building Council

 

PHILADELPHIA . Public Ledger Building 

600 Chestnut St. Suite 772 . Philadelphia PA  19106 

t : 215 238 1644  f : 215 238 1674

DALLAS . The Meadows Building   

5646 Milton St.  Suite 735 . Dallas TX  75206

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________________________________

From: biggreen-bounces at lists.biggreen.org
[mailto:biggreen-bounces at lists.biggreen.org] On Behalf Of John E. Beeson
Sent: Tuesday, July 01, 2008 2:16 PM
To: biggreen at lists.biggreen.org
Subject: Big Green: LEED SS8 - LZ3 vs LZ4



Anyone have a good sense of what LEED allows on this?  

SS cr 8 - Light Pollution Reduction 
Classifying a project under one of the zones defines by IESNA RP-33
(which apparently you'd have to buy).   

We have an urban site.  It could be considered a LZ4 based on the
criteria in the reference guide, but how do we really know for sure?

The submittal documentation requests "Confirm the site zone
classification for the project".   How? 

-John 

QUINN EVANS | ARCHITECTS 

John E. Beeson, LEED AP 

219 1/2 N. Main Street 
Ann Arbor, MI  48104 
jbeeson at quinnevans.com 
www.quinnevans.com <file://www.quinnevans.com>  
d 734 926 0425 
v 734 663 5888 
f 734 663 5044 

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