See all forum discussions about NC-v4 SSc6
 Subscribe to new posts about NC-v4 SSc6 Post a new question aboutNC-v4 SSc6
See LEEDuser’s guidance on NC-v4 SSc6»
FAQs about SSc6 :

If a light is under an overhang, is its U rating always 0?

What’s the difference between the Project Boundary and the Lighting Boundary?

Is existing lighting required to be included in the calculations? What are the exceptions?

Does athletic field lighting need to be included in this credit?

View answers »

Forum discussion

NC-v4 SSc6:Light pollution reduction

Existing Lighting Included?

Is existing lighting required to be included in the BUG rating prescriptive method? We have a project where only some site lighting is being upgraded; the rest will remain. Since these features are older, it will be difficult to determine the BUG ratings. Thank you.

0
Post a reply

You rely on LEEDuser. Can we rely on you?

LEEDuser is supported by our premium members, not by advertisers.

Go premium for $15.95  »

Profile picture for user swanson.bill
Bill Swanson
Sr. Electrical Engineer
Integrated Design Solutions
LEEDuser Expert
516 thumbs up

Fri, 09/08/2017 - 15:00

Any lighting within the project boundary should be included. You can ignore fixtures that are outside of the project boundary but inside of the lighting boundary. I don't do it much any more, but I used to find IES files for similar products when I didn't have info on an existing light. If you know the wattage of the lamp in the older fixtures you may be able to find a similar product with an IES file or BUG rating. You may need to include a photo of the existing fixture and explain this is the best data on it you could provide. New fixtures are a lot better than older ones. I strongly encourage people to update site lighting. Performance and energy savings are often enough to convince them. And all of the lights will look the same now if they are all new. But I understand everyone is on a budget.

Add new comment

To post a comment, you need to register for a LEEDuser Basic membership (free) or login to your existing profile.