The PISA II® Retaining Wall System has been designed to meet the demands of home owners, installers, and architects from around the world.

PISA II® can be used to create landscape structures like straight or curved walls, corners, steps, terraces or planters.  Structural walls can easily be constructed by incorporating layers of geosynthetic reinforcement into the wall's construction. 

All units are self sloping and self aligning using a patented interlocking system molded into each unit.  There is no need for mortar, pins or other connectors.

All units are solid, manufactured from concrete with a minimum strength of 5000 psi giving the units unparalleled strength and durability.

The PISA II® unit is a solid twin unit manufactured face to face from high strength concrete.  The rough face of the unit has the appearance of quarried stone.  This is achieved by splitting the units apart after the concrete is cured.  When the units are separated using a simple hammer and chisel, the small pieces of the aggregate within the concrete break giving the unit, and therefore the finished wall, its natural appearance.

PISA II® retaining wall should be constructed on a base of compacted crushed stone, places on stable soil.  Drainage behind the wall is extremely important and is normally created by placing a filter cloth wrapped, angular clear stone drain with drainage tile at the base, directly behind the wall. Successive courses of retaining wall units are stacked on top of each other.  The interlocking tongue and groove aligns the units, ensures the appropriate set-back between courses and ties the wall together.  The coping units is placed on top of the last course to finish the wall and must be secured with an adhesive.  Refer to the PISA® Design and Installation Guide for further information on specific procedures and details.