The use of Recycled Crushed Concrete (RCC) materials meeting NZTA (Transit) specifications is approved for Christchurch City roads.

Note that this material must not be placed in watercourses due to its potential detrimental effect on the pH of waterways.

Basecourse materials shall meet the TNZ M/4: 2006 specification as specified in:

Subbase materials shall meet the grading requirements of CCC AP65 specified in: