Providing multiple sources of light lessens the number of areas within a shadow.
Minimum parking lot lighting levels.
Recommendations for other outdoor lighting levels footcandles building exteriors entrances active.
Lighting zone 2 suburban 1 0 5 2 6 3 1 2 gas station canopy 12 5 10 15 safety building exterior 1 0 5 2 if security is an issue raise average level to 3 retail general retail ambient 50 department store 40 20 80 15 7 5 30 perimeter 75 35 150 accent lighting displays 3 10 times greater than ambient light levels.
Each location within a parking lot should be lit by a minimum of two and preferably four pole mounted lights.
The height of the parking lot lights cannot exceed 20 feet and must provide a minimum of 25 footcandles of light on the parking surface.
The two main design criteria for parking lots are a minimum light level and a certain uniformity ratio.
Sales lot exterior zone 2 suburban 15 7 5 30 15 7 5 30.
03 1033 11 17 24 020 parking lot standards.
Use ies recommendations to establish new light levels that are both appropriate and desirable.
More light does not equal better quality.
Parking covered 5 1 min.
10 1 max min uniformity parking uncovered zone 3.
Industrial employee parking educational facilities churches ies also states that the low values are appropriate wherever there is a requirement to maintain security at any time in areas where there is a low level of nighttime activity.
Light poles should be at least 20 feet tall to provide a high angle of light.
Consult with a lighting energy.
This chapter establishes standards for parking lot lighting to provide the minimum lighting necessary to ensure adequate vision and comfort in parking areas and avoid glare or direct illumination onto adjacent properties or streets.
Because luminaires are designed to meet the needs of different parking lot geometries manufacturers assign distribution types that describe the coverage area of the luminaire and its shape.