Question
Download Solution PDFIn a horizontal highway curve, if the width of the highway is 10 m and the outer edge is 40 cm higher with respect to the inner edge, then the super elevation is
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
- 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 = Super elevation and W = Width of pavement
Calculation:
Given: Rise of outer edge with respect to inner = 40 cm, W = 10 m = 1000 cm
It is given outer edge is 40 cm higher with respect to inner edge
40 = e × 1000
The required superelevation is 1 in 25
Additional Information
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.
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