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NC-2009 IEQc8.1:Daylight and Views—Daylight

Min lux level for Project which has registered 5 months before

Hi Every one, Currently we are working for factory building project which has registered five months before under USGBC Rating system LEED 2009. We would like to get Daylighting credit and it is natural ventilated building. We would like to know the required minimum lux level & maximum lux level. As per the reference guide, the min lux is 270 lux. Whether it is reduced to 110 lux after that? Please let me as soon as possible. Also let me know how to check with addenda.

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Profile picture for user treed74
TODD REED
Energy Program Specialist
PA DMVA
LEEDuser Expert
626 thumbs up

Thu, 01/09/2014 - 13:31

The minimum lux level is 107 and the maximum level is 5381. The addenda was posted in April of 2010. You can see these levels in the online credit language and here in LEEDusers. Searching the LEED addenda and interpretation database is painful.
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Jean Marais
b.i.g. Bechtold DesignBuilder Expert
LEEDuser Basic Member
581 thumbs up

Mon, 01/13/2014 - 09:43

Wow. That is a massive difference. I just tested it on a project that simulated 42% compliant area on the old requirement and 82% with the new. At the time I was completely dissapointed that the design appeared not to be good enough and couldn't understand why. Actually, it turned out to be a moot point, because it was a kindergarten (School) project without "classrooms" in the typical sense and therefore I'm not allowed to apply for the credit.
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Kathryn West
LEED AP BD+C, O+M, Green Globes Professional
JLL
LEEDuser Basic Member
112 thumbs up

Mon, 01/13/2014 - 15:45

What is the ID# for the Addendum? I can't find it when I search through the posts from April 2010. Thanks!
Profile picture for user treed74
TODD REED
Energy Program Specialist
PA DMVA
LEEDuser Expert
626 thumbs up

Mon, 01/13/2014 - 16:02

Use this link to read it, it was 2011 not 2010. Anymore it easier to go through the specific credit information rather than the LI and addenda database. http://www.usgbc.org/resources/daylight-and-views-daylight-addenda-05092011

Thu, 10/16/2014 - 15:19

I have a related question - I am documenting a project that is still registered under 2.2. This addendum lowering the minimum fc/lux was posted for the 2009 version of the credit. Can I use the minimum 10 fc for our documentation?

Mon, 03/09/2015 - 14:43

hello altogether I love LEEDuser ! with this hint we get inspite of 33% directly 77% ! Know we try to optimize the Situation - perhaps we get an exemplary Performance Point ;-)

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