A flexible pavement at an access road to a sports stadium parking lot is designed with a 4-inch sand-mix asphaltic concrete surface, 5-inch aggregate bituminous emulsion base, and a 10-inch crushed stone subbase. There are 95 scheduled baseball and football games at the stadium per year. The access road to the parking lot is three lanes in each direction (conservatively designed). The pavement was designed for recreational vehicles with one 20K single axle and one 20K tandem axle. There are 9,000 recreational vehicles estimated at each event. Given that drainage coefficients are 1.0, the overall standard deviation of traffic is 0.45, reliability is 90%, and the soil's resilient modulus is 15,000 lb/in2, how many years will the access road last if the initial PSI is 4.0 and the terminal serviceability index is 2.5?
A flexible pavement at an access road to a sports
stadium parking lot is designed with a 4-inch sand-mix
asphaltic concrete surface, 5-inch aggregate bituminous
emulsion base, and a 10-inch crushed stone subbase.
There are 95 scheduled baseball and football games at
the stadium per year. The access road to the parking lot
is three lanes in each direction (conservatively
designed). The pavement was designed for recreational
vehicles with one 20K single axle and one 20K tandem
axle. There are 9,000 recreational vehicles estimated at
each event. Given that drainage coefficients are 1.0, the
overall standard deviation of traffic is 0.45, reliability is
90%, and the soil's resilient modulus is 15,000 lb/in2,
how many years will the access road last if the initial
PSI is 4.0 and the terminal serviceability index is 2.5?
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