Derby Downtown Lighting & Signage Plan

FUTURE COMPLIANCE
The Derby District is bound to continually change in years to come. In order to maintain consistency in the lighting plan for the district, it will be important to come back to the original design criteria, metrics, and project
goals defined in this document. Any future upgrades to lighting should satisfy the following requirements:
1. Levels of Illumination: Provide lighting solutions with appropriate levels of illumination that are also within acceptable ratios of uniformity.
2. Lighting Quality: Provide lighting solutions of suitable color quality with vertical illumination for safety of pedestrians in the nighttime environment.
3. Optical Performance: Provide lighting that is respectful of the night skies and of neighboring properties by utilizing luminaires with high quality optical performance.
4. Energy and Maintenance: Provide energy efficient lighting solutions that are within current energy code standards and that provide easily maintainable solutions.
5. Private Property: Provide a means for addressing private property lighting to support the initiatives within the Derby District.
6. Visual Identity: Provide lighting systems that have a visual identity and connection to the District and proposed lighting for a cohesive solution.
Additionally, the outlined light levels, per IESNA standards, should be maintained. Over the life of the LED systems, the output will eventually degrade to a point where maintenance and replacement of components will be
necessary. The provided light levels as outlined will be a gage of continued performance in the future. Outputs can be measured by utilizing an illuminance meter and compared to the outlined design light level targets. If
the measured light levels drop below 30% (based on industry L70 standards) from the design target, then the system will need maintenance attention in the form of fixture replacement or replacement of fixture components.
144 Derby Lighting & Signage Plan