Determine the maximum distance of contraction joints for a plain concrete pavement if the maximum allowable tensile stress in the concrete is 50 lb/in2 and the coefficient of friction between the slab and the subgrade is 1.7. Assume uniform drop in temperature. Weight of concrete is 144 lb/ft3.
What will be an ideal response?
Use Equation 20.18 to determine length of pavement between contraction joints.
L = 288pc / f?c
L = (288)(50) / (1.7)(144)
L = 58.82 ft
Therefore, the maximum distance between contraction joints should be 58 ft.
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