Static structures (e.g. – buildings) – Intersection of a cast stonelike component – Cast in situ material at module juncture
Patent
1973-07-25
1977-08-09
Faw, Jr., Price C.
Static structures (e.g., buildings)
Intersection of a cast stonelike component
Cast in situ material at module juncture
52659, 52741, E04B 100
Patent
active
040402207
ABSTRACT:
A joint of beam and column-type members comprising essentially concrete of the type wherein intersecting elongate members of reinforcing steel or the like, confined with supporting members in the form of reinforcing hoops, stirrup-ties, supplementary crossties, or the like in the joint region, provide sufficient strength and ductility in the joint to withstand satisfactorily a predetermined amount of reversed flexure. A special concrete mix is prepared with fibers having a modulus of elasticity of at least about 20 million psi substantially uniformly distributed therein with an average spacing between fibers of up to about 0.3 inch and in a quantity sufficient to provide at least a predetermined flexural strength, and the joint is formed with said concrete mix and such intersecting elongate members, the number of said supporting members in the joint region being less than are required to provide said sufficient strength and ductility with concrete not containing any such fibers. The number of said supporting members may be zero.
The special concrete mix may be extended into a region beyond the joint region in at least one of the beam and column-type members with stirrups or stirrup-ties provided around the elongate members in the extended region, the number of said stirrups or stirrup-ties being less than are required to provide the necessary strength and ductility in said region with concrete not containing any such fibers.
REFERENCES:
patent: 3340667 (1967-09-01), Reiland
patent: 3400507 (1968-09-01), Macchesney
patent: 3429094 (1969-02-01), Romoaldi
patent: 3616589 (1971-11-01), Shepard
patent: 3650785 (1972-03-01), Ball et al.
Battelle Development Corporation
Dunson Philip M.
Faw Jr. Price C.
Friedman Carl D.
Warburton Kenneth R.
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