Problem No. 1 A flexible pavement for an urban interstate highway is to be designed using the AASHTO method to carry a design ESAL of 3 x 106. It is estimated that it takes about a week for water to be drained from within the pavement and the pavement structure will be exposed to moisture levels approaching saturation for 30% of the time. The following additional information is available: Elastic modulus of asphalt concrete = 450,000 psi Resilient modulus of base material = 35,000 psi Resilient modulus of subbase material = 15,000 psi CBR of subgrade material = 8

Q: For the thickness design of a concrete pavement for a four-lane national highway, the following…

A: Average daily traffic: The entire amount of vehicle traffic on a highway or road in a year divided…

Q: Characteristics of concrete (rigid) pavement (Select two) Please select all applicable answers.…

A: There are lots of characteristics  of rigid pavement

Q: The next three questions (MCQS) are based on the following information: The design structure number…

A: Given data is Design SN for incoming traffic = 5.18 Design SN for outgoing traffic = 3.05 Expression…

Q: Calculate the total strain when the stress was removed after 3 sec.

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Q: Determine the warping stresses at interior edge and corner region in a 32 cm thick concrete pavement…

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Q: A tyre with 230 kPa air pressure distributes a load over an area with circular contact radius of 200…

A:

Q: Q2) The following results were obtained from testing a certain asphalt binder: Original Asphalt RTFO…

A: After analyzing the test results, the following conclusions were made,

Q: To select an asphalt binder for a specific location, the mean seven-day maximum pavement temperature…

A: Consider the condition which satisfies by high-temperature grade of the pavement. High temperature…

Q: Please solve all the questions asked

A: **Q3: Purposes**1. **Tie Bars**: In concrete pavements, tie bars serve as connectors between…

Q: 4000 psi @ 28 days. Determine the quantity of 40 kg bags of cement, truckloads of sand and…

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Q: The following figure shows concrete pavement with the layer thickness and elastic modulus as…

A: Mr=650 Psiload transfer coefficient =3.2Serviceability loss= 4.5 to 2.5drainage coefficient =0.91080…

Q: An interstate highway pavement composed of asphalt surface course, cement treated base course and…

A: Step 1:Step 2:Step 3:

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.