Method of span construction

Details Method of span construction Method of span construction

1986-12-17

1987-12-15

Bell, J. Karl

Static structures (e.g., buildings)

Shaped or strengthened by fluid pressure

Fluid pressure is subatmospheric

14 1, 14 24, 52741, E04B 1345, E04G 1104

Patent

active

047123354

ABSTRACT:
A method of erecting a span between two points, comprising the steps of securing an elongated flexible sheath to the two end points; inflating the sheath with a gaseous fluid to form an arched tubular span connecting the two points; erecting a generally rigid frame structure supported by the tubular span, the frame structure arched at the two end points; utilizing the frame structure as support to erect a span between the two points; permanently anchoring the span at the two end points; and, removing the sheath.

REFERENCES:
patent: 511472 (1893-12-01), Sumovski
patent: 3557515 (1971-01-01), MacCracken
patent: 3894307 (1975-07-01), Delamare
patent: 4155967 (1979-05-01), South et al.
patent: 4170093 (1979-10-01), Cappellini
patent: 4454620 (1984-06-01), Barkdull

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