How We Light Outdoor Spaces – The New Rules

November 16, 2022 @ 11:30 am – 1:00 pm
Mattito's - Oak Lawn
3102 Oak Lawn Avenue

In creating ANSI/IES RP8-21, Recommended Practice for Design and Maintenance of Roadway and Parking Facility Lighting, the Illuminating Engineering Society changed the way we look at lighting in parking lots and parking garages. We are now able to conform with lower light levels if we have a better uniformity ratio. In this presentation we explore this and some of the underlying studies that brought us to this point and the application of the standard.

We will also explore the TM-15-20 Lighting Classification System, also known as BUG ratings. We explain why the old cutoff rating system no longer exists for LED fixtures, and absolute vs relative photometry (LM-79).