A rigid pavement is to be used to carry a wheel load of 57.62 kN. Enough dowels will be used across the joint. What will be the difference in thickness (in mm) between the edge and the center of the pavement? The allowable tensile strength of concrete is 1.32 MPa. Round off to the nearest whole number

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Q: Calculate the design thickness in mm (rounded to the nearest tens) at the edges of a rigid pavement…

A: Given, Allowable tensile strength of concrete, σ = 3.1 MPa Wheel load, W = 120 kN

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A: Load=58.77kN Stress=1.45MPa

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Design of pavements

Pavement is a structure that is made up of different layers such as sub-base course layer, base course layer, binder course, and a surface course formed with different materials such as gravel, above the subgrade soil constructed to act as a path or carriageway enabling the movement of vehicles. The surface of the pavement should possess characteristics such as adequate friction, light reflection, and drainage. The pavements are classified based on structural design into rigid pavements, flexible pavements, composite pavements, and unpaved pavements. The process of determining a suitable pavement type, its constituent layers, and its thickness is called pavement design.