Outdoor & Landscape Lighting Flashcards
7 cards from real CLC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Outdoor & Landscape Lighting flashcards as text
What is 'light trespass' in the context of outdoor and landscape lighting?
Answer: Unwanted light spilling onto neighboring properties or the night sky
Light trespass occurs when artificial light falls beyond the intended target area onto neighboring properties, roadways, or upward into the sky.
When designing path lighting, what is the recommended maximum spacing-to-mounting-height ratio to ensure even illumination without dark spots?
Answer: 4:1
A maximum spacing-to-mounting-height ratio of 4:1 is commonly recommended to maintain uniform illumination along pathways.
Which outdoor lighting technique is best used to make a sculpture or focal plant 'pop' against a dark background?
Answer: Silhouetting
Silhouetting places the light source behind the object aimed at the background, creating a dark outline of the subject against a lit backdrop.
For outdoor LED fixtures used in landscape applications, what minimum CRI is generally specified to render plant colors accurately?
Answer: CRI 80
A CRI of 80 or above is generally specified for landscape LED fixtures to ensure accurate and appealing color rendering of foliage and hardscape.
A landscape designer wants to highlight a water feature at night without creating glare for seated guests nearby. Which fixture placement is most appropriate?
Answer: Submerge fixtures inside the water feature aimed upward
Submerged underwater fixtures aimed upward illuminate water features from within while keeping the light source hidden below the water surface, eliminating direct glare.
Which IES (Illuminating Engineering Society) full cutoff classification ensures that zero lumens are emitted above 90° (horizontal) from a fixture?
Answer: Full cutoff
Full cutoff luminaires emit zero lumens at or above 90° from nadir and limit output above 80°, effectively eliminating uplight and reducing sky glow.
What is the purpose of using a 'well light' (in-ground uplight) in landscape design?
Answer: To uplight trees or architectural elements from a flush-mounted in-ground position
Well lights are in-ground fixtures installed flush with the ground surface, used to uplight trees, columns, or architectural features while remaining concealed.