Im doing a PW analysis of two road paving options.....so if the one plan is 10 years and the other 15, I would have to take them both out to 30 years to compare.

if the initial cost for plan A is 500k, annual maint. = 35k, periodic surfacing = 350k, and the resurfacing interval is every 10 years....

im trying to figure how to set it up

PW =500,000 + 35,000(P/F,i,30) + ?

im not sure how to handle the resurfacing.....it should be once every 10 years....

not sure?