Method and apparatus utilizing inflatable membrane form for cons

Details Method and apparatus utilizing inflatable membrane form for cons Method and apparatus utilizing inflatable membrane form for cons

1986-01-22

1986-12-16

Silbaugh, Jan

Plastic and nonmetallic article shaping or treating: processes

Forming structural installations in situ

Arched, domed, or vertical-cylindrical structure

52 2, 52741, 249 19, 249 65, 264314, B28B 732, E04G 1104

Patent

active

046295925

ABSTRACT:
A method and apparatus for anchoring an inflatable membrane form to the base wall of a building to be covered by a concrete shell incorporates a groove formation at the top inner face of the building base wall, the groove formation comprising a horizontal shelf of width W1, a recess of height H1 and width W2, and a vertical wall segment of height H2. The edge portion of an inflatable membrane form is wrapped in a multiplicity of elongated wood rail members of height H3 and width W3, with H3<H1 and W1>W3>W2, and the rails are inserted into the groove formation recess. A multiplicity of elongated steel retainer plates of flat, open, C-shaped cross-sectional configuration, mounted on bolts projecting from the shelf portion of the groove formation, aid in holding the wrapped rails and form edge in place when the form is inflated.

REFERENCES:
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Public Works Magazine, "Inflatable Form Shapes Concrete Salt Dome Storage", 10-1978.
Farm Chemicals, "Chevron Goes Dome for Economy, Efficiency", 5-1982 .

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