What is the distance between two street lights?
Technically, the distance between two street lamps should be 29 meters. This is defined by calculations of pole heights and other factors. Intention of keeping a standard distance is to maintain good illumination on streets. But at many places in PCB the distance between two lamps is as much as 50 meters.
How do you measure the distance of a street light pole?
Calculation: Spacing between each Pole=(LL*CU*LLD*LDD) / Eh*W. Spacing between each Pole=(33200×0.18×0.8×0.9) / (5×11.5) Spacing between each Pole= 75 Foot.
Why is lamp spacing important?
How far apart should lights be spaced? In addition to the height of the light source, appropriate spacing of light fixtures is critical to achieving consistent illumination of streets and sidewalks, and to preventing the pedestrian from encountering intervals of darkness.
How far apart driveway lights?
For residential purposes, 5 to 8 feet apart is generally a good rule for placing the average lights. However, if your pathway lighting fixture is brighter than average, use your own judgment and test a few different distances out. It’s okay to experiment!
How often do street lights burn out?
How often do street lights burn out? for example, the 1000W Phillips SON-EP1000 has a rated life of 28,000 hours; A street light that burns from dusk to dawn may run for 4,000 hours a year. So replacement might be scheduled at something like 6 to 7 years.
How far apart are electric posts?
They are typically spaced about 125 ft (38 m) apart in urban areas, or about 300 ft (91 m) in rural areas, but distances vary widely based on terrain. Joint-use poles are usually owned by one utility, which leases space on it for other cables.
Why is a degree longer at the poles?
Degrees of latitude are parallel so, for the most part, the distance between each degree remains constant. However, the Earth is slightly elliptical in shape and that creates a small variation between the degrees as we work our way from the equator to the north and south poles.
Which lamps are best for street lighting?
The high pressure sodium lamp (HPS) is the most commonly used street light in many countries throughout the world. It produces bright light by electricity via mixture of gases, which produces light. The lamp itself is much preferable because it requires very little/less maintenance.