In both types of continuous slab, the reinforcement should be 60mm below
the surface in order to limit the opening of cracks. Laps should be 50 times the
bar’s diameter. Longitudinal reinforcement in CRCP either without surfacing or
with a 30mm thin wearing course system (TWCS) shall be 0.6% of the crosssectional area. The required diameter is 16mm (deformed steel). Transverse
reinforcement shall be 12mm in diameter, spaced at 600mm centres. For CRCR
slabs, the longitudinal reinforcement shall comprise 0.4% of the cross-sectional
area, composed of 12mm diameter deformed bars