CLD Lighting Design Codes, Standards & Regulations 3 — Questions and Answers
Question 1: The Americans with Disabilities Act (ADA) Standards for Accessible Design set a maximum protrusion limit for wall-mounted luminaires. What is that limit?
- 4 inches from the wall surface (Correct answer)
- 6 inches from the wall surface
- 2 inches from the wall surface
- 8 inches from the wall surface
Correct answer: 4 inches from the wall surface
ADA standards allow wall-mounted objects, including luminaires, to protrude no more than 4 inches into circulation paths between 27 and 80 inches above the floor.
Question 2: Which NFPA standard governs the installation and performance of emergency and standby power systems that supply egress lighting?
- NFPA 110 (Correct answer)
- NFPA 72
- NFPA 25
- NFPA 13
Correct answer: NFPA 110
NFPA 110 covers the requirements for emergency and standby power systems including generator sets that power egress lighting.
Question 3: IES TM-21 is used in conjunction with LM-80 test data to accomplish what?
- Project long-term LED lumen maintenance beyond the tested period (Correct answer)
- Measure luminaire efficacy in the field
- Classify color rendering accuracy of LED sources
- Calculate glare ratings for interior spaces
Correct answer: Project long-term LED lumen maintenance beyond the tested period
IES TM-21 provides a method to extrapolate LED lumen depreciation data from LM-80 testing to predict long-term performance.
Question 4: The Illuminating Engineering Society's RP-8 standard covers lighting recommendations for which exterior application?
- Roadway and parking facility lighting (Correct answer)
- Sports field lighting
- Façade and architectural lighting
- Signage and advertising lighting
Correct answer: Roadway and parking facility lighting
IES RP-8 is the Recommended Practice for Design and Maintenance of Roadway and Parking Facility Lighting.
Question 5: Under the Dark Sky ordinances modeled after IDA/IES Model Lighting Ordinance (MLO), which metric is commonly used to limit light trespass at property lines?
- Illuminance in foot-candles at the property line (Correct answer)
- Luminous intensity in candelas
- Total lumens per acre
- Correlated Color Temperature (CCT)
Correct answer: Illuminance in foot-candles at the property line
MLO-based ordinances typically set maximum foot-candle levels measurable at the property line to control light trespass.
Question 6: When designing lighting for a federally funded project, which sustainability certification framework is most commonly mandated by the General Services Administration (GSA)?
- LEED (Leadership in Energy and Environmental Design) (Correct answer)
- BREEAM
- WELL Building Standard
- Green Globes
Correct answer: LEED (Leadership in Energy and Environmental Design)
GSA requires LEED Silver certification or higher for new federal buildings and major renovations under its sustainability mandate.
Question 7: In the context of theatrical and entertainment lighting, which ANSI standard governs the rating and safe use of stage luminaires?
- ANSI E1.6 (Correct answer)
- ANSI C78
- ANSI/IES RP-16
- ANSI Z535
Correct answer: ANSI E1.6
ANSI E1.6 (Entertainment Technology) addresses the requirements for electrically powered luminaires used in entertainment applications.
CLD Lighting Design Codes, Standards & Regulations 3
The Americans with Disabilities Act (ADA) Standards for Accessible Design set a maximum protrusion limit for wall-mounted luminaires.
What is that limit?