Question

What will be the cumulative number of standard axle load (in msa) for the design of flexible pavement as per IRC guidelines for the data given below?
Commercial vehicles per week = 1260
Design life of pavement = 10 years
Growth rate of vehicle = 7.5% per year
Vehicle damage factor = 1.5

Answer 1

$\text{Traffic count per day}=\frac{1260}{7}=180$
$\text{Design traffic}=\frac{365A\left[\right(1+r{)}^n-1]}{r}\times VDF$
$=\frac{365\times 180\left[\right(1.075{)}^{10}-1]\times 1.5}{0.075}\times {10}^{-6}msa$
$=1.394msa$