For rigid pavement we know the AASHTO equation for design is
reliability = 95%, so ZR = -1.645, S0 = 0.25, D = 8, delta (PSI) = 4.6 - 2.5 = 2.1
Pt = 2.5, S'c' = 800, J = 3.0, Cd = 1.0, Ec = 5000000, k = 100
So based on this we calculate the W18 to be 5799580 ESALs
So design ESALS = 5799580
this is the number of ESALS that are acting on the road over the entire design period.
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2- (18%) A roadway design company is designing a rigid pavement for a four-lane northbound section...
(18%) A roadway design company is designing a rigid pavement for a four-lane northbound section of interstate. This pavement was designed with an 8-inch slab, 95% reliability, a 800 lb/in2 concrete modulus of rupture, a 5 million 1b/in2 modulus of elasticity, a 3.0 load transfer coefficient, and an overall standard deviation of 0.25. The initial PSI is 4.6 and the TSI is 2.5. The pavement was conservatively designed (assuming the upper limit of the W18 design lane load) to last...
(18%) A roadway design company is designing a rigid pavement for a four-lane northbound section of interstate. This pavement was designed with an 8-inch slab, 95% reliability, a 800 lb/in2 concrete modulus of rupture, a 5 million lb/in2 modulus of elasticity, a 3.0 load transfer coefficient, and an overall standard deviation of 0.25. The initial PSI is 4.6 and the TSI is 2.5. The pavement was conservatively designed (assuming the upper limit of the W18 design lane load) to last...
2- A roadway design company is designing a rigid pavement for a four-lane northbound section of interstate. This pavement was designed with an 8-inch slab, 95% reliability, a 800 lb/in2 concrete modulus of rupture, a 5 million lb/in2 modulus of elasticity, a 3.0 load transfer coefficient, and an overall standard deviation of 0.25. The initial PSI is 4.6 and the TSI is 2.5. The pavement was conservatively designed (assuming the upper limit of the W18 design lane load) to last...
2- (18%) A roadway design company is designing a rigid pavement for a four-lane northbound section of interstate. This pavement was designed with an 8-inch slab, 95% reliability, a 800 lb/in2 concrete modulus of rupture, a 5 million lb/in2 modulus of elasticity, a 3.0 load transfer coefficient, and an overall standard deviation of 0.25. The initial PSI is 4.6 and the TSI is 2.5. The pavement was conservatively designed (assuming the upper limit of the W18 design lane load) to...
2- (18%) A roadway design company is designing a rigid pavement for a four-lane northbound section of interstate. This pavement was designed with an 8-inch slab, 95% reliability, a 800 lb/in2 concrete modulus of rupture, a 5 million lb/in2 modulus of elasticity, a 3.0 load transfer coefficient, and an overall standard deviation of 0.25. The initial PSI is 4.6 and the TSI is 2.5. The pavement was conservatively designed (assuming the upper limit of the W18 design lane load) to...
2- (18%) A roadway design company is designing a rigid pavement for a four-lane northbound section of interstate. This pavement was designed with an 8-inch slab, 95% reliability, a 800 lb/in2 concrete modulus of rupture, a 5 million lb/in2 modulus of elasticity, a 3.0 load transfer coefficient, and an overall standard deviation of 0.25. The initial PSI is 4.6 and the TSI is 2.5. The pavement was conservatively designed (assuming the upper limit of the W18 design lane load) to...
2- (18%) A roadway design company is designing a rigid pavement for a four-lane northbound section of interstate. This pavement was designed with an 8-inch slab, 95% reliability, a 800 lb/in2 concrete modulus of rupture, a 5 million lb/in2 modulus of elasticity, a 3.0 load transfer coefficient, and an overall standard deviation of 0.25. The initial PSI is 4.6 and the TSI is 2.5. The pavement was conservatively designed (assuming the upper limit of the W18 design lane load) to...
please provide detailed soln. time sensitive (A roadway design company is designing a rigid pavement for a four-lane northbound section of interstate. This pavement was designed with an 8-inch slab, 95% reliability, a 800 lb/in2 concrete modulus of rupture, a 5 million lb/in2 modulus of elasticity, a 3.0 load transfer coefficient, and an overall standard deviation of 0.25. The initial PSI is 4.6 and the TSI is 2.5. The pavement was conservatively designed (assuming the upper limit of the W18...
A three-lane northbound section of interstate (withthe design lane conservatively designed) has rigidpavement (PCC) and was designed with a 10-inch slab,90% reliability, 700 lb/in2 concrete modulus of rupture,4.5 million lb/in2 modulus of elasticity, 3.0 load transfercoefficient, and an overall standard deviation of 0.35.The initial PSI is 4.6 and the TSI is 2.5. The CBR is 2with a drainage coefficient of 1.0. The road wasdesigned exclusively for trucks that have one 24-kiptandem axle and one 12-kip single axle. It is knownfrom...
A rigid pavement is on a highway with two lanesin one direction, and the pavement is conservativelydesigned. The pavement has an 11-inch slab with amodulus of elasticity of 5,000,000 lb/in2 and a concretemodulus of rupture of 700 lb/in2, and it is on a soil witha CBR of 25. The design drainage coefficient is 1.0, theoverall standard deviation is 0.3, and the load transfercoefficient is 3.0. The pavement was designed to last 20years (initial PSI of 4.7 and a final PSI...