SSC JE Civil Engineering 2014 Set 1 Solved Paper

Question : 147 of 200

Marks: +1, -0

The ruling minimum radius of the curve for ruling design speed V m/sec, coefficient of friction f, acceleration due to gravity g m/sec

^{2}

and superelevation e is given by

Solution:

A ruling minimum radius

R_\ruling

can be derived by assuming maximum super elevation and coefficient of friction.

R_\ruling = V^2/ {(e + f).g}

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