Geometric Design of Highway 8

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1. A wall constructed to retain earth from slipage on the hill side of road way is called _________

A) Breast wall
B) Parapet wall
C) Retaning wall
D) None of these

... Answer is A


 

2. Thickness of parapet wall on valley side of roadway is _______

A) 80cm
B) 60cm
C) 40cm
D) 20cm

... Answer is B

 

3. Side drains are provided on both sides of roadway, when the road is_______

A) Along salient curve
B) Along Re-entrant curve
C) in cutting
D) All of these

... Answer is C

 

4. It is practically impossible to provide an ideal summit curve, so we provide_____

A) Cubic parabola
B) semi-circular
C) Clothoid
D) Parabola

... Answer is D

 

5. The geometric design features of a road is effected worsly by______

A) Vehicle width
B) Vehicle speed
C) Vehicle height
D) Vehicle weight

... Answer is B

 

6. Length of transition curve Ls w.r.t rate of change of super elevation e, in the inner edge is_________, where E is the width of road, N slope of road

A) Ls=EN
B) Ls=EN+e
C) Ls=EN/3
D) Ls=EN/2

... Answer is A
For inner edge Ls=EN: For outer edge Ls=EN/2
 

7. IRC recommended empherical formula for length of transition curve for plain and rolling is_____

A) Ls=2.7V²/R
B) Ls=V²/R
C) Ls=2V²/R
D) Ls=7V²/R

... Answer is A
For plain and rolling, V in Kmph Ls=2.7V²/R : For hilly or mountanious terrain Ls=V²/R
 

8. ________ increases with both upward and downward gradient.

A) SSD
B) ISD
C) OSD
D) None of these

... Answer is C

 

9. In snow bound areas, super elevation should not exceed_______

A) 4%
B) 5%
C) 6%
D) 7%

... Answer is D

 

10. Type of transition curve provided in hilly roads

A) Circular
B) Spiral
C) Cubic parabola
D) Leminiscate

... Answer is B

 

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