HOW TO CALUCULATE DESIGN OF FLEXIBLE PAVEMENT USING IRC METHOD???
DESIGN OF PAVEMENT USING IRC ETHOD:IRC 37:2012 1.DETAILS REQUIRED FOR FLEXIBLE PAVEMENT DESIGN: A=Initial Traffic after completion road construction (CVPD) P=Traffic intensity @last traffic count(7days ,24hrsclassified traffic ) r=Annual growth rate of commecial vechicles refer IRC:37 FOR THIS VALUE OR Take (7.5%for rurual roads,10% for urban roads) x=Construction periods of roads n=Design life in years(for National highways=15years) for express &urban=20years for other roads=10-15yrs D=lane distributiom f=vehicle damage factor 2.DESIGN OF FLEXIBLE PAVEMENT (IRC:37-2012): N=Cumulative no.of standard AXLE(Msa___million STD AXLE) N=365*A*((1+r)^n-1/r)*D*F (for D&F values refer IRC:37pg.11&12 table no.1) were, A=p(1+r)^x in CVPD(commercial vehciles /day) like ex:A= 1200(1+0.075)^2 A=1387CVPD N=365*1387*(1+0.075)^20-1/0.075)*0.075*3.5 N=57Msa Now,refer IRC:37-2012 code book for CBR (6%)value ta