Apparatus and method for composite concrete and steel floor construction
OwnerMalcolm Paceinventor
Life of this patent
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Abstract
The composite floor system of the present invention comprises a plurality of joists at least partially embedded in the concrete slab of the floor system. In the most preferred embodiments of the present invention, each of the joists is formed from a single piece of cold rolled sheet metal and, in at least one orientation, exhibits a substantially “Z-shaped” or “C-shaped” cross section along a longitudinal axis. In addition, for certain applications, a novel mounting bracket may be affixed to each end of the joists to provide for an underslung installation.
Claims24
A composite steel and concrete floor construction comprising:
- a poured concrete slab;
- a plurality of individual laterally placed, parallel disposed, and supported joists, wherein each of said plurality of joists comprises an upper chord and a lower chord joined by a body portion, and each upper chord and each lower chord is substantially perpendicular to said body portion, wherein at least a portion of said upper chord is embedded in said concrete slab, each of said plurality of joists having a first end and a second end;
- a plurality of mounting brackets, one of said plurality of mounting brackets being attached to each of said plurality of joists, each of said plurality of mounting brackets comprising:
- a body portion;
- and
- a horizontal mounting plate affixed to said body portion, each of said horizontal mounting plates resting on a load-bearing structure, said horizontal mounting plate being at least partially embedded in said concrete slab;
- wherein each of said plurality of joists comprises a substantially Z-shaped or C-shaped cross section about a longitudinal axis of said plurality of joists.
The composite steel and concrete floor construction of claim one wherein said upper chord defines a plurality of apertures and wherein each of said plurality of apertures provides a connection between a first portion of said concrete slab and a second portion of said concrete slab;
- and
- a reinforcing mesh at least partially supported upon said upper chords of said plurality of joists and hanging generally in a catenary shape therebetween and being fully embedded in said slab.
A composite steel and concrete floor construction comprising:
- a concrete slab;
- a plurality of individual laterally placed, parallel disposed joists, wherein each of said plurality of joists comprises a upper chord and a lower chord joined by a body portion, and each upper chord and each lower chord is substantially perpendicular to said body portion, wherein each of said plurality of joists comprises a substantially Z-shaped or C-shaped cross section about a longitudinal axis of said plurality of joists, wherein said upper chord comprises a plurality of concrete-engaging mechanisms, wherein at least a portion of said upper chord of each of said plurality of joists is embedded in said slab;
- a plurality of mounting brackets, one of said plurality of mounting brackets being attached to each of said plurality of joists, each of said plurality of mounting brackets comprising:
- a body portion;
- and
- a horizontal mounting plate affixed to said body portion, each of said horizontal mounting plates resting on a load-bearing structure, said horizontal mounting plate being at least partially embedded in said concrete slab;
- and
- a reinforcing mesh at least partially supported upon said upper chords of said plurality of joists and hanging generally in a catenary shape therebetween and being fully embedded in said slab.
A method comprising the steps of:
- placing a plurality of mounting brackets on a load-bearing structure, each of said plurality of mounting brackets comprising:
- a body portion;
- and
- a horizontal mounting plate affixed to said body portion, each of said horizontal mounting plates resting on a load-bearing structure;
- affixing a plurality of individual laterally placed, parallel disposed joists between said plurality of mounting brackets, thereby supporting each of said plurality of joists, each of said plurality of joists comprising a substantially “Z-shaped” or “C-shaped” cross section along a longitudinal axis;
- placing a plurality of removable spanner bars extending between said plurality of joists;
- placing a support platform over said plurality of removable spanner bars;
- and
- pouring a concrete over said support platform, thereby embedding at least a portion of each of said plurality of joists and a least a portion of each of said plurality of horizontal mounting plates in said concrete.
Dependencies are inferred from the claim text.