Engineering - Street Lights
The Street Light Management program is responsible for the design, construction, operation, maintenance, and repair of the city's roadway lighting system.
Anatomy of a Street Light
Street light infrastructure generally has three visible primary components: pole, arm, and luminaire (fixture).
There are many varieties and styles of these components and some street lights, known as post top lights, don’t have an arm as the luminaire is mounted on the top of the pole (or post).
The street light luminaire is comprised of a variety of components including a reflector, socket, lamp (bulb), capacitor, ballast, ignitor, and lens cover.
On top of each luminaire is a photocell or photocontrol that causes the street light to turn on at sunset and turn off at sunrise. The City of Glendale uses a special photocell that also monitors the light’s performance.
Street light poles are held in the ground in two ways. One method is to direct-bury or embed the pole. Notice the black tape at the bottom of the pole. This tape wraps the bottom six feet of the pole to insulate the metal from moisture and inhibit rust. The second method of pole installation uses a concrete foundation. This installation requires anchor bolts to be suspended and wire conduit to be placed in preparation for concrete to be poured in a hole shaped by a six-foot long tube.