Hello, i'm new into the LEED requirements.

My customer ask me if we have light fixtures with a luminance of less than 2,500 cd/m2 between 45 and 90 degrees from nadir.

I am working on a project that has the majority of individual occupant spaces that will be completely finished with lighting controls meeting the requirements for Option 1.  However, we a

So i know I left two questions in the past about this topic, and got no response.  So hoping third time is the charm since we got comments back from the design credit review.

Ok so I get a comment from the LEED reviewer asking for cutsheets of the lighting fixtures to back up the strategies I'm pursuing for the Lighting Quality section of this credit.  I need to as

In the open office, I'm providing direct/indirect fluorescent up-light, does it meet the exception of the Option 2A?

Hi All, we are working on a higher education theater school project where the Theater/Performace spaces do not have lighitng control panel in the same space as the performance because the lights in

Hello LEEDusers,

I am looking for guidance on Interior Lighting credit in LEED v4 and v4.1

Hi all,

Hi all,

IF I have a lighting fixture with direct light, however, the fixture's glass is translucent / white glass. i.e.

​​This appears obvious, but looking for sanity / /confirmation. Can you please confirm "movable partitions" exclude doors?

LEED v4 Interior Lighting Quality Option 2 - Strategy C

We have an art lab which has a ton of equipment/machines that students use for metal working/ pottery/ etc.

The EQ credit Interior Lighting – Option 1 - Lighting Control states that “switches or manual controls must be located in the same space as the controlled luminaires.

Are lobbies in residential apartment/condo buildings considered multioccupant spaces and thus subject to comply with lighting controllability requirements if pursuing this credit?

What program/process is most helpful for caluclating separate illuminance values for ceilings/walls/work surfaces?  I have not been able to track down a process that will allow me to do t

We are having trouble getting light reflectance values from the manufacturer for a number of finishes.  Has anybody tried using some sort of light meter to get the value yourself?

It seems to me that it would be inappropriate to have dimmers in a natatorium for safety reasons. Has anyone worked on this credit for a natatorium project? 

Thank you

Is there an exclusion for commercial kitchens needing to meet the EQc6 mutli-occupant lighting levels?  We are working on a hotel project, with a restaurant, where the kitchen has switches but

This credit is called Interior Lighting. Option 2 Strategy C says "for total connected lighting load", so does exterior lighting need to be included for lamp life?

Hi everyone, 

Hello.

For Option 2, Strategy E. 

The interior lighting of our projects has 3 zones for dorm rooms, but has dimming with manual on/ automatic off controls. There are also daylight zones.

1. Are Janitors Rooms, Storage Rooms, Electrical Rooms, Mechanical Rooms, Elevator Rooms, (not normally occupied rooms) required to conform with controls if listed in the thermal comfort submit

Hi all, 

We have been pursuing Strategy E, Option 2 in the Interior Lighting credit.  We have sealed concrete floors in most of the spaces, which is obviously done in the field and there is no manufact

Hi All, We're working on a project that has a number of internal floor-to-ceiling glass walls, some of which are transparent and others are semi-transparent.

Does a large multi-gender restroom count as a shared multi-occupant space requiring three lighting levels?

There is quite an issue of concern on LRV weighted average calculations on our project per the EQc6 credit, as the project team requires an urgent response to this, please see details bel

I am trying to figure out how to integrate microlouvers in a double-skin façade.

The architect has decided that only 50% of the louvers would be operated by the user...

Has anyone ever proposed that 1 task lamp be provided/shared for every 2 employees?

Has anoyone gained Option 1 using an IP based control system. If every light fitting can be controlled via an IP based system will this achieve complaince with Option.

Hello,

We are planning to comply with the strategies A, B, C and F. The strategies A, B and C should not pose a problem. However, I am not sure about strategy F:

Curious if anyone has had success claiming some type of Industry cited / average / worst case LRV for surface finishes such as standard poured in place concrete flooring.

The cutsheet of our concrete sealer says 45-65 @60 degrees for the gloss/sheen.

Dear All,

Hi guys, I'm having troubles getting datasheets with reflectance values for the project I'm working on.

Hi! There are big medium and small meeting rooms featuring presentation walls. They all have direct lighting from above the tables.

Hello,

We have a current project with open office layout (individual regularly-occupied spaces) that also includes what I would call huddle areas (shared multi-occupant spaces) distributed around between

We have an office project pursuing option 2. Our design is mainly downlighting and spotlights on a lighting rail system.

Strategy A states: "For all regularly occupied spaces, use light fxtures with a luminance of less than 2,500 cd/m2 between 45 and 90 degrees from nadir." Referring to the luminance tables on cut

Dear LEEDusers,

We have a project with a manufacturing space to pursue the Interior lighting control credit. Dimmers for task lights is not acceptable as safety issue.

I'm working on a project, where indirect overhead lighting for a regularly occupied space (garbage truck maintenance garage space) would not be feasible due to height restrictions for vehicle

Has anyone had success earning Interior Lighting Option 2: Strategy F with a project that doesn't have movable partitions?  Our project was denied this strategy because we don't have movable p

A recessed LED troffer type fixture may have an indirect light component by way of internal reflectors that reflect upward-directed light within the fixture back down onto the space below.

Do you have to consider the color/ light reflectance value of the built-in casework within the occupied spaces, under strategy e?  Casework is not technically a wall surface nor is it a work s

Hello,

Do Dimmable lights suffice for individual workstation lighting control. It seems like theoretically you could provide the three different light level ranges required?

Hi,

Our project has a series of exam rooms that we classified as individual, since it is for a particular task with one staff and on additional person.

In NYC, there is building that the clients are looking to see if it complies with undergoing LEED certification under a Local Law.  They pretty much ask for what could be included in the scope

Hello,

For individual occupant spaces, if the overhead lighting is controlled by an on/off switch, and each individual space is provided with an on/off task light (desk lamp or bed side light), does this

Hi,

Since the Option 2, strategies F (partitions), G (floor, wall and ceiling) and H (partition) excluding the fenestrations form calculation, I'm wondering if the exclusion can be apply for the exteri

LEED requirement says that Lighting for any presentation or projection wall must be separately controlled.

There is a garage space that acts as an auto service bay (regularly occupied space) but has a high ceiling installed with high bay lighting fixtures.  After weighing all other options, no othe

For option 1, is it acceptable for manual controls to be accomplished via a software interface rather than a physical switch?

Hi,

Greeting! 

strategy A:

Hello,

I have a few regularly occupied lab spaces with suspended lights at around 12'-8".  There is no ceiling in the space and the structure goes up to around 20'-0". 

Can project teams be awarded a point under the Lighting Quality, option 1 credit by providing task lamps with dimming capabilities to all of its employees through a request sys

I've seen several questions on this forum that address task lighting, but I still am a bit confused.

Hello,

We are pursuing strategy E for lighting quality. We received a carpet spec which includes two LRVs: 

LRV – L value: 50.4

LRV - Y value: 18.8 

Are existing light fixtures required to be included in the calculations for both options?

Hi,

Does anyone have experience or insight into achieving this credit in gallery or exhibition spaces?

We are trying to specify ceilings with at least 85% surface reflectance. However, there are areas with metal ceilings that have perforations for acoustical and fire requirements.

Hello,

I`m trying to understand the Option 2 -Strategy A and having difficulty of finding this illuminance on brazilian cutsheets. Is this information that I need to look at?

Regarding EQc6 option 2. I'm working towards satisfying strategies G and H. As part of the requirement, each space is to also meet the corresponding strategies E and F.

Hi all, I'm currently working on a research center which is located in South Korea. EQ credit 6. Interior Lighting Option 1.

For V4, is there no requirement anymore to upload supporting documents? I don't see any upload buttons on the form itself.

Hello, We have a project that is considering to install an olive tree in the atrium of the building. To sustain the tree, artificial lighting is required daily, for several hours.

Does anyone know why LEED requirements are for illuminance ratios, while WELL and ANSI/IES for Office Light talk about luminance ratios? I guess this is related to how LEED separates reflectance

The description of the credit seems to provide two options each worth 1 point but links them with an "OR".

Does anyone know if there is an alternate strategy for lighting quality that can look at Circadian Rhythm and designing to that? Thanks

I have a Sanitation Maintenance Garage project going for LEED, they have no meeting rooms or classrooms but they do have break rooms and lockers rooms.

Interior Lighting question. Option 2. Lighting Quality (1 point) A.

Hello all - We are working on a juvenile detention center and are trying to find a way to comply with EQc6.2.

When it comes to option 2 it is request to describe the method for determining reflectance values. Would a prescriptive descriptive apporach be accepted i.e. based on colour selection?

I am working on an office building that has overhead lighting that is controlled based on occupancy sensors. The fixtures are grouped per 3,6 meters and there is no manual override.