Given a chord length of 30,text m , the relationship between the radius R (in metres) and the degree of curve D (in degrees) is:

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Civil Engineering QUESTION #6569

Question 1

Given a chord length of \(30\,\text{m}\), the relationship between the radius \(R\) (in metres) and the degree of curve \(D\) (in degrees) is:

R = 1520/D
R = 1720/D
R = 4500/D✔️
R = 5400/D

Correct Answer Explanation

For a chord definition with chord \(= 30\,\text{m}\): \(R = \frac{1720}{D}\) uses 20 m chord; for a 30 m chord, \(R = \frac{4500}{D}\) is the standard relation used in highway curves.

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