Patent ID: 9469963
Filing Date: 2016-10-18
CPC Classification: B28B,E02D

Claim Text:
1. An integrally formed precast cantilevered concrete wing wall adapted to retain a soil embankment, comprising: a substantially vertically oriented stem with a predetermined height, length, and thickness; at least one anchor embedded in the stem for lifting and lowering the precast cantilevered wing wall, the at least one anchor comprising a first portion at least partially embedded in the concrete of the stem and a second portion adapted to be engaged by a lift apparatus; a footing connected at a substantially right angle to the stem, the footing and the stem formed together as one integral precast structure without joints, the footing having a toe extending laterally from a front face of the stem and a heel extending laterally from a back face of the stem; a base shear key positioned proximate to the heel at a distal portion of the footing, the base shear key extending in a downward direction from a horizontal plane defined by the footing to a predetermined depth, wherein the base shear key is adapted to extend into a trench excavated to receive the base shear key; and a plurality of blockouts formed through the footing and positioned proximate to the base shear key and in communication with the trench, wherein a grout material can be introduced through the plurality of blockouts to contact the base shear key and fill at least a portion of the trench to provide additional support and to anchor the precast cantilevered wing wall to the surrounding soil, and wherein the grout material adheres to the base shear key.