How street lighting system is designed explain?

How street lighting system is designed explain?

Main Factors in the Street Lighting Design Scheme As per CIE, 5m away from the road on both sides will be lit by Illuminance level at least 50% of that on the road. There are two types of glare created by the street light luminaires, first type is disability glare and second type is discomfort glare.

What is the standard distance between street lights?

Technically, the distance between two street lights 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.

What is staggered arrangement of street light?

Staggered arrangement: Staggering lightposts across the street from each other allows for an arrangement that is less formal, and can potentially use fewer lights, since there will be some overlap illumination.

Which lamp is used in street lights?

high pressure sodium lamp
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.

Which is used in street lights?

Today, street lighting commonly uses high-intensity discharge lamps. Low-pressure sodium (LPS) lamps became commonplace after World War II for their low power consumption and long life. Late in the 20th century high-pressure sodium (HPS) lamps were preferred, taking further the same virtues.

How many watts is a street light?

The lamps used in streetlights vary in both size and consumption, but are typically between 35 and 400 watts, says Mr Adderley.

What are street lights for?

Street lighting provides a number of important benefits. It can be used to promote security in urban areas and to increase the quality of life by artificially extending the hours in which it is light so that activity can take place. Street lighting also improves safety for drivers, riders, and pedestrians.

What is the function of street light?

Street Lights Information They are often used with other traffic safety equipment to enhance visibility of equipment, obstacles, or darkened common areas. The primary function of street lights is to illuminate objects or areas that would otherwise be dark and out of focus at night.

How many Lux is a street light?

10 lux
Typical street lighting levels are 10 lux, less than light levels normally found in the home.

How to design efficient street lighting ( Part 1 )?

In Both Side Opposite Pole Layout, the luminaries located on both sides of the road opposite to one another. Road Width: For Medium Size roads. Pole Height: The installation height of the lamp will be 2 to 2.5 time the effective width of the road. Advantage: opposite arrangements may provide slightly better lighting under wet conditions.

What are the different types of street lighting?

Slow or mixed traffic predominantly pedestrians, There are four basic types of street lighting layout arrangements used for streets or highways illumination. In One Side Pole Layout, all luminaries are located on one side of the road. Road Width: For narrower roads.

How is the illuminance of street lighting calculated?

Average Illuminance is calculated by Lumen method, where maintenance factor (MF) and coefficient of utilization (COU) are taken into account. n = number of lamps used in single luminaire = 1 for street lighting. Coefficient of Utilization (COU) is the ratio of utilized lumen to the installed lumen.

How to draw principle plane axis for street lighting?

To obtain C’ we have to prepare intensity distribution chart of the road light luminaire on the road. Where intensity will meet at maximum value this is the degree value of C’. To draw the principle plane axis we have to add 180 o with C’. The two main terms related to the street light luminaire are: