Civil Engineering MCQAE Level Civil Engineering
As per IRC 73, the ruling (design) gradient on plain/rolling terrain national highways is:
Transportation EngineeringHighway GradientMEDIUM
Choose the correct answer
A
1 in 20 (5%)
B
1 in 30 (3.3%)
C
1 in 50 (2%)
D
1 in 100 (1%)
Correct Answer
B. 1 in 30 (3.3%)
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IRC 73 ruling gradient for NH on plain and rolling terrain: 1 in 30 (3.3%). Limiting gradient: 1 in 15 (6.7%) for NH; exceptional gradient: 1 in 12.5 (8%). Steeper gradients require longer vehicles to use low gear and reduce capacity.
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