Reinforcing Placing Tolerances
For positions controlled by cover
In beams, slabs, columns and walls -5, +10 mm
In slabs-on-ground -10, +20 mm
In footings cast in the ground -20, +40 mm
For positions not controlled by cover
The location of tendons on a profile 5 mm
The position of the ends of reinforcement 50 mm
The spacing of bars in walls and slabs, fitments in beams and columns 10% specified spacing or 15mm (whichever is greater)

AS/NZS Standards documentation

Related Link: SRIA