Patent ID: 9695558
Date: 2017-07-04
CPC Classifications: E01D,E02D,E04B,E04G

Claim:
1. A method of constructing a combination precast and cast-in-place concrete foundation structure, comprising: utilizing a precast concrete foundation unit having a first elongated upright wall member and a second elongated upright wall member spaced apart from the first elongated upright wall member to define a channel therebetween, and at least first and second upright supports extending laterally across the channel and interconnecting the first elongated upright wall member and the second elongated upright wall member, the first and second upright supports spaced apart from each other in a lengthwise direction parallel to a lengthwise axis of the precast foundation unit to form a channel cell, wherein an inner side of the first elongated upright wall member includes a first recess facing the channel cell and extending only partially through a lateral thickness of the first elongated upright wall member, and an inner side of the second elongated upright wall member includes a second recess facing the channel cell and extending only partially through a lateral thickness of the second elongated upright wall member and in opposed and aligned relationship with the first recess, where the first recess is elongated in the lengthwise direction and is bounded by upper and lower edges for reinforcement retention, where the second recess is elongated in the lengthwise direction and is bounded by upper and lower edges for reinforcement retention; subsequent to casting of the precast concrete foundation unit, inserting at least a first elongated metal reinforcement member into the channel cell such that the first elongated metal reinforcement member extends laterally between the first recess and the second recess; delivering concrete into the channel cell of the precast concrete foundation unit; and allowing the concrete to cure such that the first elongated metal reinforcement member becomes embedded in the concrete.