SSC JE Civil Engineering 23-Sep-2019 Shift 2 Solved Paper

Question : 158 of 200

Marks: +1, -0

Extra widening of pavements provided because of off-tracking is known as:

mechanical widening
frictional widening
psychological widening
physical widening

Solution:

Extra widening is the extra width that is given to the curve of the pavement during its construction.
The winding required to account for the off tracking due to the rigidity of wheelbase is known as mechanical widening.
Formula of calculating mechnical widening is :

W_\m={NI^2}/{2R}

Here, n = number of traffic lanes
l = length of wheel base of largest vehicle in m
R = radius of horizontal curves in m

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