Civil Engineering MCQJE Level Civil Engineering
Maximum superelevation (e) permitted on National Highways in plains per IRC:SP:73 is:
Transportation EngineeringTransportation EngineeringMEDIUM
Choose the correct answer
A
4%
B
7%
C
10%
D
12%
Correct Answer
B. 7%
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Max superelevation: e = 7% (0.07) for NH on plains (plain and rolling terrain). On hill roads: 10%. On urban roads: 4% (to avoid slow vehicles sliding). e_max × f_min = V²/(127R) at limiting condition. Superelevation develops over transition curve length.
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