New Zealand Placing Tolerances

Unless tighter tolerances are specified, the following apply.

Spacing tolerances
To be used in conjunction with concrete cover tolerances below
Spacing of main bars in beams and columns	±10 mm
Distance between layers of main steel except it shall not be less than 25 mm	±5 mm
Distance between bars along the face of walls or slabs	±20 mm
Spacing of stirrups or ties in beams and columns	±20 mm
Longitudinal position of splice	±30 mm

 

Concrete Cover Tolerances
Tolerances of concrete cover relative to the values shows on the drawings and specifications.
In slabs and walls	+10, -0 mm
In beams and columns	+10, -0 mm
At ends of members	+25, -0 mm