Question

If the ruling gradient on any highway is 3 the gradient provided on the curve of 300 metre radius is

Answer 1

Answer:

Grade compensation = 30+r/r = 30+300/300 = 330/300 = 1.1,

Ruling gradient = 3%,

Maximum limit of grade compensation = 75/300 = 0.25,

So compensated gradient = 3-0.25 = 2.75.

Answer 2

Answer:2.75%

• Grade compensation = min{ (30+R) /R, 75/R}
• by putting R =300m
• Grade compensation = Min{1.1,0.25}
• compensated gradient = Gradient (3%)-Grade compensation (0.25)=2.75%