Underground concrete vault structure for hazardous liquid...

E - Fixed Constructions – 04 – H

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E04H 7/26 (2006.01) B67D 7/78 (2010.01) B09B 1/00 (2006.01) B28B 1/14 (2006.01) B28B 23/02 (2006.01) B65D 88/76 (2006.01)

Patent

CA 2044071

ABSTRACT A fluid tight structure or vault particularly suited to having hazardous liquid storage tanks located therein for storage of liquids such as gasoline, and used as a replacement for underground storage tanks in facilities such as gasoline stations, truck stops, or industrial plants, so that the storage tanks are available for periodic inspection and any leakage from such tanks is contained within the structure to avoid contaminating surrounding ground, is constructed of prefabricated concrete panels having weldable material embedded therein where the panels meet so that the panels may be seal welded together along adjacent edges to provide the fluid tight structure. Thus, floor panels have plates of weldable material embedded therein over which wall panels having bottom edges of weldable material are placed and welded. Adjacent side edges of the wall panels are also welded. The welds provide seals between the various panels and provides structural strength to hold the panels in assembled position. The structure is preferably constructed below ground level with a structure roof of concrete panels positioned at ground level and designed to have vehicles travel thereover. The floor of the structure preferably extends beyond the perimeter of the walls to form a lip which is covered with earth to keep the structure from floating upwardly. 23

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