Precast stair system having improved releasably connected steps

Details Precast stair system having improved releasably connected steps Precast stair system having improved releasably connected steps

1991-05-06

1993-04-20

Scherbel, David A.

Static structures (e.g., buildings)

Stepped; e.g., stair

Precast stonelike component

52190, 411 82, E04F 1910

Patent

active

052031284

ABSTRACT:
A precast stair system having releasably mounted steps is disclosed. The system includes first and second elongate, generally parallel stringer elements having respective inner surfaces that face each other and a plurality of individually precast steps that are precast independently of the stringer elements. Each step extends side to side from a first end that engages the inner surface of the first stringer element to an opposite second end that engages the inner surface of the second stringer element. The steps are juxtaposed in an ascending pattern along the stringer elements. Each step is releasably fastened to each stringer element. In particular, a first connector is formed through the inner surface of the first stringer element and through the first end of the step and a second connector is formed through the inner surface of the second stringer element and through the second end of the step.

REFERENCES:
patent: 2555002 (1951-05-01), Phillips et al.
patent: 2940784 (1960-06-01), Fell
patent: 3307308 (1967-03-01), Lyons
patent: 3875708 (1975-04-01), Thornes
patent: 4679362 (1987-07-01), Mess
patent: 4840524 (1989-06-01), Bisping et al.
patent: 4915557 (1990-04-01), Stafford
patent: 4995205 (1991-02-01), Bennett

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