A flexible pavement is constructed with 4 inches of hot-mix asphalt wearing surface, 10 inches soil cement base and 10 inches crushed stone subbase. The subgrade has a soil resilient modulus of 12,000 lb/in2, M2 = 1.5 and M3=1.127 for the materials of the pavement structure. The overall standard deviation is 0.5, the initial PSI = 5.0 and the terminal serviceability index (TSI) is 2.5. The daily traffic has 3000 cars, 1000 trucks and 500 trailers. The axle weights are: How long in years would the pavement last if R = 98% ? (Final answer to 2 decimal places)
A flexible pavement is constructed with 4 inches of hot-mix asphalt wearing surface, 10 inches soil cement base and 10 inches crushed stone subbase. The subgrade has a soil resilient modulus of 12,000 lb/in2, M2 = 1.5 and M3=1.127 for the materials of the pavement structure. The overall standard deviation is 0.5, the initial PSI = 5.0 and the terminal serviceability index (TSI) is 2.5. The daily traffic has 3000 cars, 1000 trucks and 500 trailers. The axle weights are: How long in years would the pavement last if R = 98% ? (Final answer to 2 decimal places)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A flexible pavement is constructed with 4 inches of hot-mix asphalt wearing surface, 10 inches soil cement base and 10 inches crushed stone subbase. The subgrade has a soil resilient modulus of 12,000 lb/in2, M2 = 1.5 and M3=1.127 for the materials of the pavement structure. The overall standard deviation is 0.5, the initial PSI = 5.0 and the terminal serviceability index (TSI) is 2.5. The daily traffic has 3000 cars, 1000 trucks and 500 trailers. The axle weights are: How long in years would the pavement last if R = 98% ? (Final answer to 2 decimal places)
Transcribed Image Text:A flexible pavement is constructed with 4 inches of hot-mix asphalt
wearing surface, 10 inches soil cement base and 10 inches crushed
stone subbase. The subgrade has a soil resilient modulus of 12,000
Ib/in2, M2 = 1.5 and M3=1.127 for the materials of the pavement
structure. The overall standard deviation is 0.5, the initial PSI = 5.0
and the terminal serviceability index (TSI) is 2.5. The daily traffic has
3000 cars, 1000 trucks and 500 trailers. The axle weights are:
Cars:
20000 Ib single axle
10000 Ib single axle
Trucks: 6000 Ib single axle
18000 Ib single axle
Trailers: 8000 Ib single axle
14000 Ib tandem axle
40000 lb triple axle
How long in years would the pavement last if R = 98% ? (Final
answer to 2 decimal places)
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