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GATE Exam Questions

Q1: A two lane single carriage-way is to be designed for a design life period of 15 years. Total two-way traffic intensity in the year of completion of construction is expected to be 2000 commercial vehicles per day. Vehicle damage factor = 3.0, Lane distribution factor = 0.75. Assuming an annual rate of traffic growth as 7.5%, the design traffic expressed as cumulative number of standard axles, is

A 42.9 x 106

B 22.6 x 106

C 10.1 x 106

D 5.3 x 106

ANS:A - 42.9 x 106

Ns = 365*A*(LDF)*F*[ (1+r)^n -1 ] as numerator and 'r' as denominator.

A = 2000 cvpd.
r = 7.5%,
L.D.F = 0.75,
F = 3,
n = 15,
Ans. = 42.9*10^6.



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