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The usual width of parapet walls along Highways in hilly region, is ____________

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The usual width of parapet walls along Highways in hilly region, is ____________

(a) 60 cm

(b) 20 cm

(c) 70 cm

(d) 40 cm

This question was addressed to me during an online interview.

My question is based upon Detailed Specifications of Road Work in chapter Specifications, Estimation of Quantities of Materials and Transport of Civil Engineering Drawing

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Best answer
Correct option is (a) 60 cm

The best explanation: A parapet is a barrier which is an extension of the wall at the edge of a roof, terrace, balcony, walkway or other structure. The word comes ultimately from the Italian parapetto. The German equivalent Brustwehr has the same meaning. Where extending above a roof, a parapet may simply be the portion of an exterior wall that continues above the line of the roof surface, or may be a continuation of a vertical feature beneath the roof such as a fire wall or party wall.

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