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Highway Engineering - Engineering

Q1:

On earth roads, the camber should preferably be

A 1 in 20 to 1 in 24

B 1 in 30 to 1 in 48

C 1 in 15 to 1 in 20

D 1 in 10 to 1 in 15

E 1 in 10 to 1 in 12

ANS:A - 1 in 20 to 1 in 24

According to me,
Camber value( Light to heavy rainfall).
Rigid /High bitu- 1/60 to 1/50.
Thin bitu- 1/50 to 1/40.
WBM/Gravel road /Hilly Road- 1/40 to 1/33.25(maybe 1/36).
Earthen road- 1/33.25 to 1/25.

So here none is correct.