Box beam reinforced concrete structure

Claim 1

The combination of integrated spaced apart parallel concrete skin walls and an elongated monolithic solid concrete core connecting said walls; flexible wire mesh sections embedded in said walls and said core and being positioned to provide continuous reinforcement extending medially of said walls and across said core; a plurality of sinuous truss wires each extending between and having its apexes fixed to and providing an uninterrupted continuous wire connection between and supporting said sections in spaced apart substantially parallel planes with said apexes embedded in said walls; a pair of flexible frangible sheets mounted on and solely supported by said truss wires one interiorly of and substantially parallel to each of said sections in spaced relation thereto and providing backing for concrete forming said walls with said sections embedded medially in said walls; said sheets permitting cutting thereof to provide selectively positioned sheet ends folded transversely and interiorly to form spaced apart backing walls on opposite sides of and generally parallel to one of said truss wires for supporting plastic concrete forming said core contiguous to and integrated with said skin walls; and said last-named truss wire extending through and being embedded in said core and having its length extending longitudinally of said core.