Transcribed Image Text: 1. Figure (1) shows a pavement structure composed of three layers with their details. If the HMA and the base layers are
Transcribed Image Text: 1. Figure (1) shows a pavement structure composed of three layers with their details. If the HMA and
the base layers are combined into one layer with the same total thickness (HMA+base layers), what
should be the equivalent elastic of the combined layer modulus so the tensile strain at the bottom of
the the HMA= 0.0006 in.
30000 Ib
150 psi
E, = ?
6 in
HMA layer
Ej = 400,000 psi
V;=0.4
Granular base
E = 20,000 psi
V=0.4
20 in
layer
Subgrade layer
E3 = 10,000 psi
Vz=0.4
%3D
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