The Rocla MassBloc® retaining wall system comprises large precast permeable concrete blocks manufactured under stringent quality control. Construction is mortarless and an experienced crew can place up to 70m² of wall per day. The blocks are interlocked by a nib precast into the base of each standard unit.
The rough concrete surface of the blocks aids resistance to shearing by increasing the friction between units.
Blocks can be manufactured with varying height and width. Tapered block sides easily adapt to curved walls.