US Green Building Council Exam LEED-AP-BD+C Topic 9 Question 14 Discussion

Actual exam question for US Green Building Council's LEED-AP-BD+C exam

Question #: 14
Topic #: 9

To achieve the Sustainable Sites Credit, Light Pollution Reduction, Option 1. BUG Rating Method, projects must demonstrate:

AAll luminaires have full cutoff fixtures

BAll luminaires are mounted at least three mounting heights from the lighting boundary

CAll luminaires have a minimum color temperature of 3500 K

DAll luminaires meet acceptable fixture ratings for the project's Model Lighting Ordinance (MLO) lighting zone

Show Suggested Answer

Suggested Answer: D

Detailed

Under the BUG Rating Method, all luminaires must meet acceptable fixture ratings (Backlight, Uplight, and Glare ratings) for the project's Model Lighting Ordinance (MLO) lighting zone. This ensures compliance with LEED's Light Pollution Reduction credit by limiting light trespass, reducing glare, and preserving night sky quality.

by Theresia at May 04, 2025, 03:06 PM

Limited Time Offer

25%

Off

Get Premium LEED-AP-BD+C Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

Submit Cancel

Nadine

2 months ago

I believe the correct answer is D as well, it aligns with the requirements for the Sustainable Sites Credit.

upvoted 0 times

...

Berry

2 months ago

I'm not sure, but I think A could also be a possibility.

upvoted 0 times

...

Marla

2 months ago

I agree with Celeste, D makes sense because it mentions the Model Lighting Ordinance.

upvoted 0 times

...

Celeste

2 months ago

I think the answer is D.

upvoted 0 times

...

Joana

2 months ago

I believe the correct answer is D as well, it's important to meet the fixture ratings for the project's lighting zone.

upvoted 0 times

...

Donette

2 months ago

I'm not sure, but I think A could also be a possibility.

upvoted 0 times

...

Virgilio

2 months ago

I agree with Bette, D makes sense because it ensures the luminaires meet the necessary standards.

upvoted 0 times

...

Lorean

2 months ago

A) All luminaires have full cutoff fixtures. Ah, the old 'full cutoff' requirement. Gotta love those lighting professionals and their obsession with light pollution.

upvoted 0 times

...

Carlee

2 months ago

I wonder if the 'Model Lighting Ordinance' was written by a bunch of astronomers who just want to keep the night sky clear for their stargazing.

upvoted 0 times

Chantell

2 months ago

C) All luminaires have a minimum color temperature of 3500 K

upvoted 0 times

...

Shakira

2 months ago

B) All luminaires are mounted at least three mounting heights from the lighting boundary

upvoted 0 times

...

Ethan

2 months ago

A) All luminaires have full cutoff fixtures

upvoted 0 times

...

Bette

2 months ago

I think the answer is D.

upvoted 0 times

...

Tonette

3 months ago

Wait, is the 'BUG' rating method referring to the actual bugs attracted to the lights? Because that would be a whole other level of sustainable design.

upvoted 0 times

Brandee

2 months ago

C) All luminaires have a minimum color temperature of 3500 K

upvoted 0 times

...

Chandra

2 months ago

B) All luminaires are mounted at least three mounting heights from the lighting boundary

upvoted 0 times

...

Fairy

2 months ago

A) All luminaires have full cutoff fixtures

upvoted 0 times

...

Dianne

3 months ago

D) All luminaires meet acceptable fixture ratings for the project's Model Lighting Ordinance (MLO) lighting zone. This makes the most sense to me, as meeting the local lighting regulations is crucial for compliance.

upvoted 0 times

Juan

2 months ago

C) All luminaires have a minimum color temperature of 3500 K

upvoted 0 times

...

Gearldine

2 months ago

B) All luminaires are mounted at least three mounting heights from the lighting boundary

upvoted 0 times

...

Francisca

2 months ago

A) All luminaires have full cutoff fixtures

upvoted 0 times

...