Since the steel in continuously reinforced concrete pavements is used for restraining longitudinal movement would it be correct to locate it at about the center of the slab thickness?
It is recommended that the steel be located no lower than mid-depth but preferably higher. Cores drilled at cracks in pavements show that the cracks are wider above the level of the longitudinal steel than below. Where steel has inadvertently been placed in the bottom third of the pavement, cracks at the top surface have been unusually wide.