Collapsible spacer

Details Collapsible spacer Collapsible spacer

1993-07-22

1994-10-04

Taylor, Dennis L.

Hydraulic and earth engineering

Foundation

521695, 5216911, 404 64, 404 74, 405258, E02D 500

Patent

active

053520645

ABSTRACT:
A collapsible spacer for disposition between a form for a concrete foundation member and the underlying soil includes voids to allow the spacer to deform permanently and occupy a reduced volume when upheaving of the soil occurs. The spacer is fabricated from a material, such as expanded polystyrene foam, whose structural strength is not significantly altered by exposure to moisture. Embodiments of the spacer which are suited for use with forms for foundation beams and slabs are discussed.

REFERENCES:
patent: 2743602 (1956-05-01), Dunn
patent: 4658267 (1987-08-01), Workman
patent: 4702048 (1987-10-01), Millman
patent: 4745716 (1988-05-01), Kuypers
patent: 4799348 (1989-01-01), Brami et al.
patent: 4869032 (1989-09-01), Geske
patent: 5067298 (1991-11-01), Petersen
patent: 5085539 (1992-02-01), Massarsch

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