A 16 cm thick reinforced concrete pavement slab has an elastic modulus equal to 3x105 kg/cm? and Poisson's ratio equal to 0.12. Calculate the radius of relative stiffness for the slab if it is placed on a sub grade of modulus equal to 7 kg/cm³.

A 16 cm thick reinforced concrete pavement slab has an elastic modulus equal to 3x105 kg/cm? and Poisson's ratio equal to 0.12. Calculate the radius of relative stiffness for the slab if it is placed on a sub grade of modulus equal to 7 kg/cm³.

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter19: Design Of Flexible Highway Pavements

Section: Chapter Questions

Problem 18P

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Concept explainers

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.

Question

A 16 cm thick reinforced concrete pavement slab has an elastic
modulus equal to 3x105 kg/cm? and Poisson's ratio equal to 0.12.
Calculate the radius of relative stiffness for the slab if it is placed on
a sub grade of modulus equal to 7 kg/cm³.

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