Geometric Design of Highway 4

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1. Equilibrium super elevation is given by

A) V²/127R
B) V²/gR
C) V²/R
D) None of these

... Answer is A
If design speed is given only 75% of velocity is taken, then equation becomes, e = V²/225R

 

2. Gradient of road depends upon the 

A) Nature of traffic
B) Rainfall of the locality
C) Nature of ground
D) All of these

... Answer is D

 

3. Steepest gradient permitted on road is ____

A) Limiting Gradient
B) Maximum Gradient
C) Both
D) None of these

... Answer is C

 

4. Suitable gradient for which the engineer designs is called______

A) Limiting Gradient
B) Average Gradient
C) Exception Gradient
D) Ruling Gradient

... Answer is D

 

5. Essential gradient that has to be provided for the purpose of road drainage is called ______

A) Floating Gradient
B) Exceptional Gradient
C) Minimum Gradient
D) Maximum Gradient

... Answer is C

 

6. The ratio of total rise or fall between any two points chosen on the alignment divided by the horizontal distance between the two points is called _________

A) Ruling Gradient
B) Floating Gradient
C) Average Gradient
D) Minimum Gradient

... Answer is C

 

7. Exceptional Gradient should not be provided in a length more than________

A) 50m
B) 100m
C) 150m
D) 200m

... Answer is B

 

8. Opportunity to cross slow moving traffic at intervals is not provided in case of ______

A) 2-lane highways
B) 3-lane highways
C) 4-lane highways
D) All of these

... Answer is C

 

9. Minimum grade provided for concrete way is

A) 1/200
B) 1/300
C) 1/400
D) 1/500

... Answer is D
Minimum gradient for concrete-1/500: Minimum gradient for open soil drain-1/200
 

10. As per IRC, there is no need to provide grade compensation if the gradient is ___

A) 5%
B) 4%
C) 3%
D) 2%

... Answer is B
On a horizontal curve to accomodate the loss of tractive effort, the gradient should be reduced. Grade compensation= (30+R)/R or 75/R   - whichever is less
 

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