Method for prestressing a structural member

Details Method for prestressing a structural member Method for prestressing a structural member

1974-05-22

1976-04-20

Abbott, Frank L.

Static structures (e.g., buildings)

Processes

Requiring soil work

52 98, 52223R, 52232, E04C 208

Patent

active

039509052

ABSTRACT:
The apparatus disclosed includes an elongated reinforcing member with stress anchors attached to each end for embedding in a body of hardenable material, such as concrete, when the material is cast into the desired shape for the structural member. The apparatus includes a member containing potential energy. After the material has hardened, the potential energy is released to place the material between the stress anchors in compression to prestress the structural member before it is placed in service.

REFERENCES:
patent: 2303394 (1942-12-01), Schorer
patent: 2453079 (1948-11-01), Rossmann
patent: 2781658 (1957-02-01), Dobell
patent: 2827770 (1958-03-01), Bakker
patent: 2857755 (1958-10-01), Werth
patent: 2869214 (1959-01-01), Van Buren
patent: 2963273 (1960-12-01), Lane
patent: 3029490 (1962-04-01), Middendorf
patent: 3290840 (1966-12-01), Middendorf
patent: 3327380 (1967-06-01), Howlett
patent: 3400507 (1968-09-01), MacChesney
patent: 3498013 (1970-03-01), Kern

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