The rate of camber is normally indicated by 1 : n ( 1 in n ) (1 vertical to n horizontal) or in proportions as n % (for instance, 1 in 50 or 2 %). The design values of camber is mainly based on pavement’s type and the amount of rainfall in the area.
Cambers are very useful to eliminate the surface water. But these are not recommended for wearing down the surface. Cambers of slope 2 to 3% are arranged.
Types of Camber
Composite Camber
Composite camber is a combination of partly parabola and partly straight line which have different slopes. The central part of the road is made of parabolic and it is provided with straight slopes near the edges. By increasing the contact area of the wheel camber helps to decrease the intensity of pressure.
Sloped or Straight Camber
This type of camber is made by meeting two straight surfaces in the crown. Crown is the central point in the surface of the road. The shape of the edges make difficulties for the traffic. That is why it is not used frequently.
Published By
Arka Roy
www.constructioncost.co
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