Determine whether the slab thickness obtained in Problem 20-17 is adequate for the tensile stress that will occur for joint loading.
What will be an ideal response?
First, solve for the radius of relative stiffness, l.
Assume the JPCP is doweled, and thus, the midslab is the critical fatigue damage
location. Midslab tensile stress due to loading (Equation 20.29):
Since ?l = 117.4 lb/in2 < flexural strength = 700 lb/in2, the slab thickness D = 11.9
in obtained from Problem 20-17 is adequate.
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