Determine the radius of curve if it is designated as 3° curve on a 30m arc.

Question

Question

This question was previously asked in

JKSSB JE Civil Jal Shakti 5 Dec 2022 Official Paper (Shift 1)

Answer 1

Concept:

Simple circular curve:

Explanation:

The length of the curve (l):

the length of curve T1 K T2 is given by

Given: l = 30 m, D = 3°

R = 572.957 m

Additional InformationThe degree of curve is given as,

Where,

Da = degree of curve and R = radius of the curve

Different parameters of Simple circular curve:

Tangent Length (T) = R tan (D/2)

Length of long Chord (L) = 2R sin (D/2)

Mid-ordinate (M) = R {1 - cos (D/2)}

External distance (E) = R {sec(D/2) - 1}