# US 4,393,636 A · Box beam reinforced concrete structure

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- Number: US 4,393,636 A
- Document ID: US4393636A
- Status: Granted
- Kind: A
- Application number: 06/190,355
- Filed: 1980-09-24
- Granted: 1983-07-19
- Earliest claimed: 1980-09-24
- Inventors: Raymond H. Rockstead; Christopher A. Rockstead
- Web page: https://patentgrep.com/patent/US4393636A

## CPC

- E04B 5/32: Floor structures wholly cast in situ with or without form units or reinforcements
- E04B: GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of opening in walls, floors or ceilings E06B1/00; {electromagnetic shielding H05K9/0001})

## Abstract

A box beam reinforced concrete and steel construction providing spaced apart wire mesh reinforced concrete skin walls and interior concrete supporting frangible sheets providing for solid concrete cores contiguous to and monolithically integrated with the skin walls.

## Claims

### 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.

### Claim 2 (depends on 1)

The combination of claim 1 comprising a plurality of box beams each having a pair of said wire mesh sections and a plurality of said sinuous truss wires and a pair of said flexible frangible sheets mounted on said truss wires;
said box beams being mounted in contiguous relation to form a joint;
said sheets having portions deployed transversely interiorally of said box beams to define the boundary of said joint and backing for concrete positioning said core in said joint integrally joined to and forming a monolithic continuation of said skin walls;
said truss wires being terminated short of an edge portion of one of said sections at said joint to define a free standing wire mesh extension overlapping and attached to the wire mesh section of a contiguous box beam and monolithically incorporated in one side of said joint; and
said truss wires of another of said box beams being terminated short of an edge portion of one of said sections of said last name box beam at said joint to define a free standing wire mesh extension overlapping and attached to the wire mesh section of a contiguous box beam and monolithically incorporated in another side of said joint.

### Claim 3 (depends on 2)

The structure of claim 2,
said truss wires of one of said box beams projecting therefrom as free-standing wires extending into and being cast within said joint.