Static structures (e.g. – buildings) – Processes – Requiring soil work
Patent
1989-08-21
1992-08-04
Ridgill, Jr., James L.
Static structures (e.g., buildings)
Processes
Requiring soil work
52224, 52249, 264 32, E04B 116
Patent
active
051348306
ABSTRACT:
The present invention is directed to improved tank structures and the processes and apparatus for their construction. The walls of the prestressed tank are formed by inflating a membrane, applying one or more layers of rigidifying material on said membrane and then prestressing the walls by circumferentially wrapping prestressing material to minimize the tension in the rigidifying material when subjected to loading. In another embodiment wall forms are placed inwardly of said membrane to aid in the forming and support of the walls under circumferential prestresing. In the best mode of the invention, the walls are of reinforced plastic, fiber, or shortcrete and resin sandwich composite construction. Seismic countermeasures designed to minimize vertical or radical bending stresses in the wall or dome shell may also be used to protect the structure against earthquakes and other tremors, by anchoring said wall or dome shell to their base in a manner whereby horizontal seismic forces are distributed circumferentially around the wall or dome shell.
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