PAVELOOK

Under the guidance of IRC37-2012 gives the thickness of flexible pavement.

The design traffic in terms of the cumulative number of standard axles to be carried during the design life of the road should be computed using the following equation:

N=365*(1+r)^x *A*D*F/r

Where,

N = Cumulative number of standard axles to be catered for in the design in terms of msa.

A = Initial traffic in the year of completion of construction in terms of the number of Commercial Vehicles Per Day (CVPD).

D = Lane distribution factor (LDF)

F = Vehicle Damage Factor (VDF).

n = Design life in years.

r = Annual growth rate of commercial vehicles in decimal (e.g., for 5 per cent annual growth rate, r = 0.05).

The traffic in the year of completion is estimated using the following formula:

A = P (1 + r)x

Where,

P = Number of commercial vehicles as per last count.

x = Number of years between the last count and the year of completion of construction.