Abstract: A metal skeleton for the reinforcement of a vertically elongated concrete structure has a first plurality of leg members each having top and bottom ends and inner and outer side edges together defining a leg body portion. A first plurality of rib plate engagement slots are formed in at least one of the inner side edge and the outer side edge. Each of the leg members is formed from a flat sheet of metal material. A first plurality of rib plates each define a generally planar central body portion and each have a first plurality of leg-engagement slots projecting into the central body portion. The leg-engagement slots are dimensioned and adapted to frictionally engage with respective ones of the rib plate engagement slots. The first plurality of leg-engagement slots slidingly interfit within respective ones of the first plurality of rib-engagement slots to securely connect the rib plates to the leg members to form the metal skeleton.

Abstract: A pre-engineered metal skeleton for the reinforcement of a concrete structure comprises a plurality of elongated primary beams and a plurality of interconnecting members each formed from flat sheets of metal. The interconnecting members frictionally interlock with co-operating receiving portions formed on the primary beams to thereby secure the primary beams and the interconnecting members one to the other without requiring supplemental fastening means. The plurality of interconnecting members have both their major axis and their minor axis oriented substantially transversely to the major axis of the elongated central main body portion of the primary beams.

Abstract: A metal skeleton for the reinforcement of a vertically elongated concrete structure has a first plurality of leg members each having top and bottom ends and inner and outer side edges together defining a leg body portion. A first plurality of rib plate engagement slots are formed in at least one of the inner side edge and the outer side edge. Each of the leg members is formed from a flat sheet of metal material. A first plurality of rib plates each define a generally planar central body portion and each have a first plurality of leg-engagement slots projecting into the central body portion. The leg-engagement slots are dimensioned and adapted to frictionally engage with respective ones of the rib plate engagement slots. The first plurality of leg-engagement slots slidingly interfit within respective ones of the first plurality of rib-engagement slots to securely connect the rib plates to the leg members to form the metal skeleton.