Construction of roofs, floors and beams

A self-supporting reinforced structure for reinforcing concrete roofs and floor forming a beam with hollows comprising, in combination, a pair of bolster beams disposed in spaced relationship, a plurality of crossbars extending between the bolster beams securedly joining the bolster beams together, rib means disposed on the top of the crossbars and secured thereto for providing structural strength to the beam, and counter brace means for supporting the beam and providing structural strength to the beam so that said beam is self-supporting after an agglutinatable filler material has been poured over the beam prior to the time said filler material becomes partially agglutinated, and a pair of hollow filler block elements disposed in spaced relationship, each of said filler elements having a respective extension, said extensions of two adjacent filler elements comprising substantially flat surfaces extending toward and disposed proximally adjacent each other to form a hollow for receiving said counter brace and beams thereon and for receiving thereover filler material poured into the hollow, said counter brace means being engagingly supported before filling said hollow solely by the flat surfaces of said extensions, thereby providing said additional strength enabling the pouring of the filler material to be accomplished without using other counter braces.