Question

For the design of a highway with flexible pavement as per IRC 37, the following information is collected.
Present traffic = 1800 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 _______. (rounded to nearest integer)

Answer 1

Present traffic = 180 cvpd
Traffic after the completion of construction
$=\left[1800\right(1+0.08{)}^1]$
$=1944cvpd$
$\text{Cumulative standard axle}=\frac{30\left[\right(1+0.08{)}^{15}]-1}{0.08}\times 1944\times 2.5\times 1$
$=48.16msa$