Static structures (e.g. – buildings) – Cast in situ concrete barrier with laterally projecting... – Additional distinct coextensive section fixed to barrier or...
Patent
1986-12-29
1987-12-29
Murtagh, John E.
Static structures (e.g., buildings)
Cast in situ concrete barrier with laterally projecting...
Additional distinct coextensive section fixed to barrier or...
52334, 52650, 52694, E04C 308
Patent
active
047151552
ABSTRACT:
The present invention provides apparatus for composite slab construction, comprising an open web of zig-zag structure upper and lower knuckles and at least one chord united to the web to form a joist. The chord will include an upper chord comprising a sealing first bar which extends longitudinally in said joist and which has first bar which extends longitudinally in said joist and which has first and second legs. The first leg is a longitudinal, upright leg with a first face which is upright and confronts one side of the web. The second leg comprises plural longitudinally-spaced leg segments extending longitudinally throughout the length of, open spaces. The second bar extends longitudinally in said joist and includes an upright third leg having a second face which is upright and confronts the other side of the web. This second face is laterally spaced from the first leg and is in closely spaced or abutting relationship with the leg segments of the first bar. Together, the first, second and third legs and leg segments and their respective faces form a concrete-receiving channel into which a plurality of the upper knuckles of the web extend to partition the channel into plural, longitudinally spaced pockets having open upper mouths for receiving concrete. Spanner bars extend between adjacent joists.
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Hodges, Philip T., "How the Keylock Joist Achieves Composite Action", May 19, 1986, 2 pgs.
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