Cooling tower, construction method therefor and precast prestres

Details Cooling tower, construction method therefor and precast prestres Cooling tower, construction method therefor and precast prestres

1977-02-14

1978-06-06

Purser, Ernest R.

Static structures (e.g., buildings)

Tensioned or flexed sheet facing

52 80, 52228, 52244, 52248, 261DIG11, E04H 1216

Patent

active

040928110

ABSTRACT:
A large, thin-shell cooling tower, a method for its erection, and novel precast units. Upon a foundation a series of angularly-extending columns is erected, and the columns are joined at their upper ends by a lower ring. Then a ribbed, waffle-like reinforced concrete wall is constructed to extend up from the lower ring and to provide a shell with a shape such as a hyperbolic paraboloid. The ribbed outer (or inner) surface strengthens the structure while enabling the thickness of the portions in between the ribs to be relatively thin. A series of vertically-spaced horizontal circumferential reinforcing bars or post-tensioning cables and a series of horizontally-spaced vertical or inclined bars or cables, are included in the wall. The wall is preferably made up from a series of precast units that are of novel structure in themselves. At the top of the wall is an upper ring joining the various elements together.

REFERENCES:
patent: 2759332 (1956-08-01), Lloyd
patent: 3300942 (1967-01-01), Horstman

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