Abstract: A spacer (20) is mounted on a lateral rebar tie (13) of a reinforcement cage (11) of a poured concrete foundation support. The spacer (20) includes a pair of interlocking wheel members (21 and 22) which lock the wheel members (21 and 22) together in a mated interlocked relationship rotatably mounted about a lateral tie (13) of the reinforcement cage (11) to form the spacer (20). As the reinforcement cage (11) is inserted into an excavated shaft, the outer side wall (32) of the spacer (20) engages and rolls along the side wall thereof. The engagement of the side wall of the excavated shaft by the spacers (20) centers the reinforcement cage within the excavated shaft and maintains the reinforcement cage in its centered position as the excavated shaft is filled with concrete.

Abstract: The spacer support (20) includes a support base (22) and a receptacle (26) which are welded together at interfitting annular flanges (46 and 64). A bearing plug (24) includes a circular support plate (48) covering the upper surfaces of the radial walls (36), with a tapered stem (50) projecting into a tapered center opening (34) of the support base (22). The flexible engagement fingers (66) allow one way movement of the rebar rod (14) into the receptacle (26), and the protrusions (18) of the rod engage the ends of the fingers (66), prohibiting separation of the spacer support (20) frown the rod (14).