Cross Slope Are of Following Types

1. Straight line camber

2. Parabolic camber

3. Composite camber

NOTE- For cement concrete pavement straight line camber is preferred as it is easier to lay.

QUESTION

An 8 m wide bituminous concrete pavement of a state highway is to be constructed in a heavy rainfall region. What should be the height of the crown with respect to the edges if cross fall of 1 in 50 is used?

SOLUTION-The height of the crown with respect to edges is given by  

 Height of crown = Width of pavement / 2 × Camber

Height of crown=Width of pavement / 2× Camber 

Calculation:

Given:    Width of road = 8 m, Camber (or) cross fall = 1 in 50 = 1/50 = 0.02 

Height of crown = 82×0.02 Height of crown = 0.08 m

Camber of pavement depends on 

• Type of pavement

• Intensity of rainfall (Light/Heavy rain)