Question

General Height of Street Lights
The general height of street lights is ____________. a. 2m b. 3 to 4m c. 20m d. 10 to 15m

Answer 1

b. 3 to 4m.....................................

Answer 2

Answer:

The error-free answer to this problem is an option (b) $3 \ to\ 4$ m.

Explanation:

Street light pole height depends upon the wattage of light being installed on the pole for small road lights around $30$ watts till $60$ watts around $9$bases pole will work OK for lights between $60\ to\ 120$ watts $12$ bases pole is suggested $120\ -\ 220$ watt can be installed on $14$ bases pole for light wattage above $220\ 15 - 16$ bases pole can be installed The height of the lighting pole to be used is related to the range of the area to be illuminated. $4-5-6$ measures height of lighting poles is used on sidewalks and bike roads. $8- 10$ measures lighting poles are preferred in narrow thoroughfares and footpaths. $10- 12$ measures height of lighting poles is used in arterials and marketable and artificial areas. Factors similar as speed limit, business viscosity, and a crime rate that determine the class of road lighting should be considered in determining the height of the mast and the distance between the poles. The total light affair and light distribution of the light institution should also be considered in determining the height of the pole.

Hence

           An error-free answer is an option (b) $3 \ to\ 4$ m.

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