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,

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...

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...

What is the definition of "occupant spaces" ? 

Can anyone confirm if v4.1 requires color rendering / color fidelity index requirements to be met to achieve the Lighting Control option?   LEEDuser does not state this, but the credit language...

"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...

Are decorative lighting fixtures such as chandeliers, wall sconces, and table lamps, that are within regularly occupied space included in the requirements to comply with luminance of less than 2,...

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...

Hello all,

Here is a actual problem I have encountered. What will happen if the lighting consultant has provided the necessary documents that comply with all the requirements for the...

In LEEDv4, the Surface Reflectivity criteria was measured by using "area-weighted averages", thus the Interior LIghting Calculator asked for areas of walls and ceilings. One big compliant area...