Form assembly for building framework

In a sheet metal form assembly for a building framework having:

• a plurality of adjoining, horizontally elongated, sheet metal beam forms extending away from a corner joint location, each of said beam forms having a closed bottom and opposite upstanding sides and being open at the top to receive poured concrete for filling the interior of the beam form;
• a vertically elongated, sheet metal, hollow column form extending down from said corner joint location, said column form having a closed periphery along its vertical length and being open at the top to receive poured concrete for filling the hollow interior of the column form;
• the improvement which comprises a sheet metal, hollow, corner joint engaged between and connecting the upper end of the column form and the neighboring ends of the beam forms at said corner joint location, said corner joint having side openings therein which are aligned respectively with the neighboring ends of the beam forms and a bottom opening which is aligned with the upper end of the column form, said corner joint having a top opening and being open at the inside below said top opening between said side and bottom openings for receiving concrete poured down into said top opening, said corner joint having outwardly projecting flanges at the periphery of each of said side and bottom openings which slidably interfit telescopically with the adjacent ends of the ajoining beam forms and the column form, respectively.