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 lb single axle 10000 lb single axle Trucks: 6000 Ilb single axle 18000 lb single axle Trailers: 8000 lb single axle 14000 lb tandem axle 40000 lb triple axle 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 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 lb single axle 10000 lb single axle Trucks: 6000 Ilb single axle 18000 lb single axle Trailers: 8000 lb single axle 14000 lb tandem axle 40000 lb triple axle How long in years would the pavement last if R = 98% ? (Final answer to 2 decimal places)

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Drainage of Pavements

Pavement Drainage holds ample significance, as it prevents the accumulation of water or any liquid on the surface of pavements and ensures proper drainage system. With proper design and gradual slopes provided, the water gets easily removed from the surface into the drains, which are essential during heavy rains and unusual weather conditions keeping it less prone to accidents and increasing the durability of the pavement structure.

Question

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 lb single axle
10000 lb single axle
Trucks: 600O Ib single axle
18000 lb single axle
Trailers: 8000 lb single axle
14000 lb tandem axle
40000 lb triple axle
How long in years would the pavement last if R = 98% ? (Final
%3D
answer to 2 decimal places)

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