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WHAT ARE THE ADVANTAGES OF SUPER ELEVATION

Hello Everyone. In this blog we will discuss WHAT ARE THE ADVANTAGES OF SUPER ELEVATION. The term super-elevation is very important in road construction especially in curved path.

WHAT ARE THE ADVANTAGES OF SUPER ELEVATION



SUPER ELEVATION: When a vehicle negotiates a curved path, it is subjected to an inward force know as centrifugal force. In order to resist this, the outer edge of the road is generally raised above the inner edge. This is know as super-elevation or cant or banking.

  • The greater the super-elevation, more will be convenience to the slow moving traffic.
  • The super-elevation should not be less than the camber.
  • In the absence of super-elevation on road along curves, pot holes are likely to occur at the outer edge of the road.
  • The maximum value of super-elevation is 1 in 15.
  • The maximum rate of super-elevation is given by; 
                e = v2/225R

where.  e = Rate of super-elevation                    
v = speed of the vehicle in kmph
R = Radius of curvature in meter



ADVANTAGES:
  • To achieve higher speed of vehicles
  • To increase the stability of fast moving vehicles when they negotiate a horizontal curve
  • To decrease the intensity of stresses on the foundation.


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WHAT ARE TH E LIMITS OF CAMBER IN ROAD BASED ON AMOUNT OF RAINFALL
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