Uncrushed coarse greywacke-derived fluviatile gravels with a small proportion of coarser-grained slightly to moderately weathered greywacke sandstone clasts.

It has grey-gold tones, reflecting the look of a typical NZ River and is very suitable for the mulching of gardens and other decorative uses such as the creation of natural water features

Specification
Weathering Quality	BB
Crushing Resistance	400kN
Specific Gravity	2.621
Meets TNZ spec for drainage

The 20-40mm drainage has good movement with 45% +

The 65 - 150mm Rip Rap has stability with the weight of greywacke and rounded with less resistance to water flow. It is also much safer for people and vehicles than the sharp edged crushed product.

3-5mm	5-12mm	20-40mm
40-65mm	65-150mm	100-200mm