Question

(a) Calculate length of transition curve required in order to attain maximum super elevation of 15 cm assuming rate of super elevation of 3 cm/sec when the speed of vehicle is 50 kmph.  ​

Answer 1

Step-by-step explanation:

Given (a) Calculate length of transition curve required in order to attain maximum super elevation of 15 cm assuming rate of super elevation of 3 cm/sec when the speed of vehicle is 50 kmph.

•      We need to find the length of transition curve required in order to attain maximum super elevation.
• So speed of vehicle v = 50 km / hr
•                                       = 50 x 5/18
•                                        = 250 / 18
•                                         = 125 / 9 m/s
• So elevation or height h = 15 cm
• Rate of superelevation x = 3 cm / s
•                                             = 3 x 10^-2 m/s
•                  So we have L = h v / x
•                                           = 15 x 125 / 9 x 3
•                                          = 1875 / 27
•                                  Or L = 69.44 m

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