Compute the thickness of a flexible pavement for a wheel load of 55 kN, if the allowable bearing pressure on the base of the pavement is 0.15 MPa and the equivalent radius of the contact area of the tires is equal to 170 mm.

Compute the thickness of a flexible pavement for a wheel load of 55 kN, if the allowable bearing pressure on the base of the pavement is 0.15 MPa and the equivalent radius of the contact area of the tires is equal to 170 mm.

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter20: Design Of Rigid Pavements

Section: Chapter Questions

Problem 22P

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Concept explainers

Methods to Determine Vertical Stress

The load applied to the soil is transferred to the underground. The presence of water at soil pores and solid grains above the soil are the primary components that are responsible for the effective load transfer. Due to the load acting, the internal component of the soil or the underground formations undergoes deformations or a tectonic shift. The amount of deformation depends upon the amount of load acting on the soil surface, which indeed, depends on the weight of everything present above the soil. Due to this, the underground soil element develops internal stresses which try to resist the tectonic changes.

Question

Compute the thickness of a flexible
pavement for a wheel load of 55 kN, if the
allowable bearing pressure on the base of
the pavement is 0.15 MPa and the
equivalent radius of the contact area of the
tires is equal to 170 mm.

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