Metal shoring, shore support systems and scaffold systems for use in construction, comprised of metal posts, metal beams, trusses, metal girders, feet, platforms, connectors, planks, trollies, couplers, struts, retaining straps, ledger frames, base plates, screw jacks, flying form, and table form; tubes of metal; building equipment mainly of metal, namely, formwork supports and planks for gangways for formwork supports, slab forming systems, namely, main and secondary beams, drop-heads and jack props in the nature of vertical supports for formworks; wall forming parts as wall forming systems, composed of metal, beams and connection bolts and plywood; metal formwork accessories, namely, beams, framework girders, main beams, jack props in the nature of vertical supports for formworks, metal push-pull props, in the nature of stabilizing wall forming, support towers, posts and frames, metal rail posts, metal trenching struts, metal, steel and aluminum trench lining systems for trench wall stabilization comprised of metal shoring struts, metal trenching struts, metal trench sheeting and anchors; metal clamps, metal beam clamps, metal manhole profiles for trench boxes, metal bolts, metal couplings for use with wall form elements, metal corners for wall form elements