Question

38: If the radius of a horizontal curve is 150m, then the
allowable speed is
2747642885
50 km/h
55 km/h
65 km/h

Answer 1

Answer:

Explanation: 65 Km/h

Answer 2

If the radius of a horizontal curve is 150m, then the  allowable speed is 65 km/h

Therefore, option (d) is correct.

Explanation:

Note: This is a question of Civil Engineering particularly Highway Engineering

Given:

Radius of a horizontal curve R = 150 m

To find out:

The allowable speed

Solution:

We know that the radius of the horizontal curve is R and the allowable speed is v

Then

$v=\sqrt{0.22gR}$

Therefore

$v=\sqrt{0.22\times 9.8\times 150}$

$\implies v=\sqrt{323.4}$

$\implies v=17.98$ m/s

$\implies v=17.98\times\frac{18}{5}$

$\implies v=64.74\approx 65$ km/h

Hope this answer is helpful.

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