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Can decorative lighting be excluded from interior lighting requirements?

NC-v4.1 EQc6: Interior lighting
posted by Sara BENLOUBA on Nov 23, 2023, 8:36 am

Dear experts,

Regarding the...

Last reply: Andrey Kuznetsov, Oct 4, 2024, 11:30 pm

Glare Control- UGR- Average Value or Absolute Value?

NC-v4.1 EQc6: Interior lighting
posted by Mariana Ballina on Aug 6, 2024, 7:33 pm

Hello,

When using the UGR calculation method for the interior lighting credit, is the <19 rating in regards to the average UGR in the space, or in regards to the highest UGR at any...

Surface Reflectivity with LRV Value

NC-v4.1 EQc6: Interior lighting
posted by Nohemi Mena on Mar 27, 2024, 6:33 pm

Hello!

Has anyone succesfully certified a project under the Interior Lighting v4.1 - Surface Reflectivity requirements by documenting the interior finishes plan and the wall painting...

Surface Reflectivity calculations for walls with glazing

NC-v4.1 EQc6: Interior lighting
posted by Ricardo Sá on Jan 28, 2021, 4:50 am

Dear All,

According to LEED credit library, For at least 90% of regularly occupied spaces, use interior finishes with a surface reflectance greater or equal to 80% for ceilings...

Last reply: Jamy Bacchus, Feb 26, 2024, 11:40 pm

Multilevel lighting control

NC-v4.1 EQc6: Interior lighting
posted by Michael on Jun 26, 2022, 11:55 pm

I have 10 lighting fixtures in an office space, and the architect is providing 3 on-off switches:

- switch 1, on-off 5 lightings (50% of lighting numbers)

- switch 2, on-off 2...

Last reply: Karen Joslin, Dec 18, 2023, 12:51 pm

Open office space control

NC-v4.1 EQc6: Interior lighting
posted by Soha ElYamany on Dec 15, 2023, 6:44 am

I was wondering if anyone was able to comply with the multi-level control requirements in an open office space, realistically speaking, I am not sure how an office space with over 100 people for...

Do we have the possibility of combining the two requirements between 2 options of Glare?

NC-v4.1 EQc6: Interior lighting
posted by Sara BENLOUBA on Aug 7, 2023, 5:45 am

Dear All, 

We are looking for a clarification regarding the EQ credit "Interior Lighting" – of LEED V4.1, about option “GLARE CONTROL”.

Do we have the possibility of combining the...

Last reply: Umesh Atre, Oct 14, 2023, 10:57 am

Glare Control for Regularly Occupied Spaces

NC-v4.1 EQc6: Interior lighting
posted by Lauren Kottis on Feb 7, 2022, 9:58 am

"For all regularly occupied spaces, meet one of the following requirements:  

  1. Use light fixtures with a luminance of less than 7,000 candela per square meter (cd/m)2 between...

Last reply: Sara BENLOUBA, Oct 13, 2023, 11:14 am

UGR calculation

NC-v4.1 EQc6: Interior lighting
posted by Gustavo De las Heras Izquierdo on Aug 14, 2023, 12:34 pm

Hello,

UGR can be calculated at different angles (30°, 45°, ... from nadir).

At what angle should the UGR be reported for credit compliance?

Thank you,

Last reply: Denise Bevilaqua, Aug 25, 2023, 8:28 am

Different strategies in different rooms

NC-v4.1 EQc6: Interior lighting
posted by An Marc on Sep 21, 2021, 4:04 am

Our project (NCv4.1) consists of production area (regulary occupied) and office area.

Can we applay strategies 1(Glare Control),2(Color Rendering),3(Lighting Control) for production area...

Last reply: Emily Purcell, Jan 26, 2023, 3:57 pm