Question

For the design of a highway with flexible pavement as perb IRC 37, the following information is collected.
Present traffic = 1500 cvpd
Period of construction = 1 year; VDF = 2.5 and LDF = 1
Assuming the traffic growth rate as 8.00% per year, the cumulative number of standard axle repetitions (in msa) for a design life of 15 years is

• A. 16.05
• B. 26.64
• C. 40.13
• D. 20.26

Answer 1

The correct option is C 40.13

Present traffic = 1500cvpd
Traffic after the completion of construction
$=1500(1+0.08{)}^1$
$=1620cvpd$
Cumulative standard axles
$=\frac{365\left|\right(1+0.08{)}^{15}-1|}{0.08}\times 1620\times 2.5\times 1=40.13msa$