Concept: Superelevation:To
counteract the effect of centrifugal force and to reduce the tendency of the vehicle to overturn or skid, the outer edge of the pavement is raised with respect to the inner edge, thus providing a transverse slope throughout the length of the horizontal curve. This transverse inclination to the pavement surface is known as superelevation or cant.
If the pavement is
rotated about the inner side, Then rise of outer edge = e × W
If the pavement is the
rotated about center line, Then rise of the outer edge =
Where e = Superelevation and W = Width of pavement
Calculation: Given, Width of the pavement = 7.5 m and Superelevation = 0.06
When
rotated about the inner side, Rise of outer edge = e × W = 0.06 × 7.5 = 0.45 m
When rotated about the center line, Rise of outer edge
===0.225m