Street lighting is a part of building a
complementary way that can be placed on either side of the road or in the
middle of the road are enabled to lighting the road or around the neighborhood.
The street lights are not only intended to lighting the road itself, but also
the intersection, interchange, overpass, flyovers, underpasses and tunnels.
This lighting system is available in a single unit of street lighting fixtures comprising a light source (lamp), electric
element (the connector to the power supply), optical elements (a reflector and
diffuser), the support arm, vertical pillar and foundation of the lamppost.
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In a street lighting system planning, there
are a few things to note. Even street lighting has been set in the
international system because of the importance of light for road users.
Installation of a lamp shall be measured in accordance equity ratio of light,
so it is important to choose the proper street
lighting fixtures. Price comparison between the minimum value of the
average value or the maximum value of a quantity of strong lighting for the
road surface is called uniformity ratio.
As for the pillar lights can be divided into
two. The pillar is an indispensable element in the street lighting fixtures. According to the function, the pillar
light is divided into:
1.
Rigid
light stanchion
Pole made rigid
so that it will withstand the impact. Pole placement is limited, unless the available
free space wide enough. Pole models can also be combined with road safety Building.
2.
Stanchion
frangible bulbs
Poles that will break easily if hit by yet
not give fatal damage. Pole placement is very broad because it can be placed in
the area freely though narrow.
Selection of street lighting fixtures must be carried out strictly. There are
several types of lamps in accordance with its function for street lighting
system, namely:
1. Low pressure
fluorescent tube lights: the average age of 8,000 to 10,000 hours with a power
of 18-20 watts and 36-40 watts. Used for collector roads and local roads, this
lamp has a fairly high efficiency. In addition, it has an influence on the
color of the object that is pretty good.
2. High
pressure mercury gas lamp: the average age of 16,000 to 24,000 hours with a
power of 125, 250, 400 and 700 watts. Used for collector roads, local roads and
intersections, this lamp has a low efficiency, long life and small lamp size.
The importance of choosing the street lighting fixtures will affect
the safety and comfort of road users. Accidents can happen simply because
motorists do not see clearly the circumstances surrounding streets. Especially
when the rains come, our visibility is only able in a few meters ahead. For
that we need to be mounted lamps with good lighting levels.
image source : www.exceedconstruction.net
image source : www.exceedconstruction.net
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