mfh10403task-2

TASK -2
PAVEMENT ANALYSIS AND DESIGN (MFH 10403)
1. A 10,000 lb wheel load exerting contact pressure of 80 psi is applied on an elastic two-layer
system, as shown in Figure 1. Layer one has Elastic Modulus 200,000 psi and thickness 8 in.
Layer two has elastic modulus 10,000 psi. Both layers are incompressible, with Poisson’s ratio
0.5. Assuming that the loaded area is a single circle. Determine the maximum surface deflection.

Figure 1: Wheel load on elastic two-layer pavement system
2. A uniformly distributed load of intensity q is applied through a circular area of radius a on the

surface of an incompressible (v = 0.5) homogeneous half-space with an Elastic Modulus E, as
shown in Figure 2. In terms of q, a, and E, determine the vertical displacement 3 principal
stresses, and 3 principal strains at a point 2a below the surface under the edge (r = a) of the
loaded area.

Figure 2: A uniformly distributed load on pavement