Static structures (e.g. – buildings) – With component having discrete prestressing means – Beam – girder – or truss construction
Patent
1985-04-03
1987-03-03
Perham, Alfred C.
Static structures (e.g., buildings)
With component having discrete prestressing means
Beam, girder, or truss construction
52334, 52729, 264228, E04C 326, E04C 3294, B28B 904
Patent
active
046464930
ABSTRACT:
An improved composite, pre-stressed structural member and method of forming such a member of the type provided by upside down forming which includes connecting the steel beams of the composite member to the upper side of a mold so that a parallel deflection of the mold and beams occurs as the mold is filled with concrete. The improvement comprises utilizing a steel beam having a flange at or near the neutral axis with respect to a vertical deflection of the support member. After the composite structure is formed, the flange is away from the neutral axis with respect to a vertical deflection of the composite structure. This flange, therefore, significantly increases the section modulus of the composite structure while not adding significantly to the resistance to bending of the beam during pre-stressing. Stacked and welded I-beams are an example of a support in accordance wth this invention.
REFERENCES:
patent: 152794 (1874-07-01), Coolidge et al.
patent: 1652056 (1927-12-01), Selway
patent: 2373072 (1945-04-01), Wichert
patent: 2382138 (1945-08-01), Cueni
patent: 2382139 (1945-08-01), Cueni
patent: 2725612 (1955-12-01), Lipski
patent: 3166830 (1965-01-01), Greulich
patent: 3305612 (1967-02-01), Frantz
patent: 3588971 (1971-06-01), Lipski
patent: 3608048 (1971-09-01), Lipski
patent: 4093689 (1978-06-01), Mayer et al.
patent: 4279680 (1981-07-01), Watson, Jr.
patent: 4493177 (1985-01-01), Grossman
Keith & Grossman Leasing Co.
Perham Alfred C.
LandOfFree
Composite pre-stressed structural member and method of forming s does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Composite pre-stressed structural member and method of forming s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composite pre-stressed structural member and method of forming s will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1009706