Inflatable form for concrete structures

Details Inflatable form for concrete structures Inflatable form for concrete structures

1986-07-21

1988-02-09

Woo, Jay H.

Static molds

In situ construction engineering type or building type-mold...

Forming building structure

52 2, 249 65, 249177, 249179, 249183, 264 32, 425470, E04G 1104

Patent

active

047237511

ABSTRACT:
A cylindrical inflatable bag when inflated is used as a form for a concrete structure. A large number of parallel anchor straps extend around a portion of the cylinder in planes perpendicular to the longitudinal axis of the cylinder. Each strap is fixed to the inflatable form and has anchoring means on each end for securing to foundation anchors set in a foundation upon which the structure is to be constructed. The inflated bag is held in position by the straps. Reinforcing elements are supported on the outer surface of the bag. A cementitious material is then applied on an inflated bag to a thickness sufficient to cover the reinforcing elements. After the concrete is set, the bag is deflated removed with the straps for use at another site.

REFERENCES:
patent: 2324554 (1943-07-01), Billner
patent: 2624931 (1953-01-01), Billner
patent: 3225413 (1965-12-01), Bird et al.
patent: 3353309 (1967-11-01), Kwake
patent: 3553970 (1971-01-01), Wiswell, Jr.
patent: 3728831 (1973-04-01), Bird
patent: 3924363 (1975-12-01), Candle
patent: 4442059 (1984-04-01), Boyce

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