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US 7,721,497 B2Granted
Apparatus and method for composite concrete and steel floor construction
OwnerMalcolm J. Paceinventor
Life of this patent
Estimating the term…
Abstract
A composite floor system comprises a system of joists, where each of the joists has a top chord, a bottom chord and a web, including tension and compression members in the space between the top chord and the bottom chord and secured to the top and bottom chords, and the top chord of the joist having a substantially cruciate or cross-shaped cross section about a longitudinal axis of the upper chord.
Claims13
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 an intermediate web member, wherein at least a portion of said upper chord is embedded in said concrete slab;
- and
- wherein at least one of said upper chords of one of said plurality of joists comprises:
- a first horizontal leg portion and a first vertical leg portion, said first horizontal leg portion and said first vertical let portion being connected at a first central point, said first horizontal leg portion and said first vertical leg portion defining a substantially 90° angle;
- a second horizontal leg portion and a second vertical leg portion, said second horizontal leg portion and said second vertical leg portion being connected at a second central point, said second horizontal leg portion and said second vertical leg portion defining a substantially 90° angle;
- wherein said first horizontal leg portion and said second horizontal leg portion define a substantially 180° angle and wherein said first vertical leg portion depends upwardly from said first horizontal leg portion at said first central point and second vertical leg portion depends downwardly from said second horizontal leg portion at said second central point.
4 more elements
A composite steel and concrete floor construction comprising:
- a concrete slab;
- two primary support members;
- a plurality of individual laterally placed, parallel disposed secondary support members supported by said two primary support members, wherein each of said plurality of secondary support members comprises an upper chord and a lower chord, each of said upper chords of each of said plurality of secondary support members comprising a plurality of concrete-engaging mechanisms, wherein each of said upper chords of each of said plurality of secondary support members comprises:
- a first angle, said first angle comprising a vertical leg and a horizontal leg, said vertical leg and said horizontal leg defining a substantially 90° angle, said horizontal leg depending substantially upward from said horizontal leg;
- and
- a second angle, said second angle comprising a vertical leg and a horizontal leg, said vertical leg and said horizontal leg defining a substantially 90° angle, said vertical leg depending substantially downward from said horizontal leg;
- at least one connection point connecting said primary support members to at least one of said secondary support members, wherein said at least one connection point comprises a shear transfer connection and functioning as a shear transfer mechanism to enhance the composite nature of said composite steel and floor system;
- an intermediate web member joining said upper chord and said lower chord of each of said plurality of secondary support members, said intermediate web member comprising a plurality of tension and compression members triangulating a space between said upper chord and said lower chord of each of said plurality of secondary support members;
- a reinforcing mesh at least partially supported upon said upper chords of said plurality of secondary support members and hanging generally in a catenary shape therebetween and being fully embedded in said slab;
- and
- at least one section of corrugated metal decking disposed between an adjacent pair of said individual laterally placed, parallel disposed, and supported joists, said at least one section of corrugated metal decking comprising a support structure for said poured concrete slab.
8 more elements
Dependencies are inferred from the claim text.