Civil Engineering - Highway Engineering - Discussion

43. 

If the difference in elevation of an edge of the pavement 9 m wide and its crown is 15 cm, the camber of the pavement, is

[A]. 1 in 60
[B]. 1 in 45
[C]. 1 in 30
[D]. 1 in 15
[E]. 1 in 7.5

Answer: Option C

Explanation:

No answer description available for this question.

Abhishek said: (May 11, 2016)  
How it comes? Please explain.

Ashu said: (May 15, 2016)  
Please explain how it can be solved.

Dabhi Deepak said: (Jun 15, 2016)  
It's so easy. Simple calculation.

Total pavement= 9m half = 9 * 0.5 = 4.5.

Horizontal Distance ------------- Vertical Distance.
4.5m. --------------> 0.15m.
1 m. -------------->?

0.15 / 4.5. = 1/30. Means 1 in 30.

Pritesh Dabhade said: (Mar 15, 2017)  
Total width of carrige way = 9m.
So camber always consider distance from crown to edge which is 4.5m here.
Hence 4.5 ÷ 0.15 = 30,
So camber is 1 in 30.

Mayur said: (Jun 1, 2018)  
The equation of straight camber:-
y= W/2N.
W - width of the road,
N - slope, y- ht of camber(crown),
0.15=9/2N,
N=9/2*0.15,
N= 30. So camber is 1 in 30.

Osman said: (Jul 12, 2018)  
Camber is given on half-width of the road.

So, 9m/2=4.5m. Or 450cm.
Now given that,
For 450 cm long there is 15 cm height.
1 cm --- 15/450 = 1/30 or 1 in 30 =>answer.

Prabhudas Mahapatra said: (Oct 21, 2018)  
Ymax = W/2N.

So, N = W/2 Ymax.
N= 900/2*15 = 30.
Gradient, G = 1 in N,
G = 1 in 30.

Roy said: (Nov 11, 2018)  
Thanks @Dabhi Deepak.

Utsav said: (Jan 3, 2019)  
A simple way is 450/15 = 30.

Hence 1 in 30.

Sahil said: (Aug 30, 2019)  
Camber is ratio of height of crown to horizontal distance from centre to edge.

So, first converting 15cm to m = 0.15,
Camber = 0.15/4.5 = 1/30.

Francis said: (Mar 24, 2021)  
camber in % will be (0.15/4.5) * 100 = 3.3 %.

Boss said: (Apr 22, 2021)  
Slope = Rise/Fall.
Slope = 0.15/4.5,
Slope = 0.33,
Hence, Slope = 1/30.

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