TechWall^® is a precast counterfort retaining wall system. TechWall retaining walls are an effective solution when site conditions preclude the use of reinforcing strips such as severe right-of-way restrictions, utility conflicts, pile foundations and roadway widening. Unlike conventional cast-in-place concrete structures, TechWall combines the inherent advantages of a precast concrete system with the traditional benefits of a counterfort design. Construction follows a simple, rapid and predictable method. Precast panels are placed atop a cast-in-place shear key, a footing is poured on top of the key, and structure backfill is placed and compacted. This unique system saves cost and construction time.