On the Recommendations of Indian Road Congress, the Ruling Gradient in Plains, is

By Aina Parasher|Updated : July 25th, 2022

On the recommendations of Indian Road Congress, the ruling gradient in plains, is

  1. 1 in 15
  2. 1 in 20
  3. 1 in 30
  4. 1 in 45

Answer: C. 1 in 30

On the recommendations of Indian Road Congress, the ruling gradient in plains, is 1 in 30.

Solution

Ruling/Design Gradient: It is the maximum gradient, by which roads are designed.

Limiting Gradient: It is steeper than Design Gradient. This gradient is used when construction cost is high.

Exceptional gradient: It is steeper among all the gradients. This is generally used where any steepy obstruction of length less than 100 m arises.

Gradients for different types of terrain are represented as follows.

Terrain

Ruling Gradient (in %)

Limiting Gradient (in %)

Exceptional gradient (in %)

Plain and Rolling

3.3 

5

6.7

Mountainous or hilly ( Elevation > 3000m )

5

6

7

Steepy ( Elevation > 3000m )

6

7

8

Ruling gradient in plains: 3.3 % or 1 in 30.

☛ Related Questions:

Comments

write a comment

Follow us for latest updates