Commercial Interiors

SSc1f

½ Point

Light Pollution Reduction

Intent: Minimize light trespass from the building and site, improve night sky access and reduce development impact on nocturnal environments.

Toolbox

• Meet or provide lower light levels and uniformity ratios than those recommended by the Illuminating Engineering Society of North America (IESNA) Recommended Practice Manual: Lighting for Exterior Environments (RP-33-99).
• Design exterior lighting such that all exterior luminaires with more than 1000 initial lamp lumens are shielded.
• Design exterior lighting such that all exterior luminaires with more than 3500 initial lamp lumens meet the Full Cutoff IESNA Classification.
• The maximum candela value of all interior lighting shall fall within the building (not out through windows)
• The maximum candela value of all exterior lighting shall fall within the property.
• Any luminaire within a distance of 2.5 times its mounting height from the property boundary shall have shielding such that no light from that luminaire crosses the property boundary.