Subterranean plastic tank

Details Subterranean plastic tank Subterranean plastic tank

B - Operations, Transporting

65

D

61/2.4

B65D 88/76 (2006.01) B65D 88/04 (2006.01) B65D 88/12 (2006.01)

Patent

CA 1111665

ABSTRACT OF THE INVENTION A thin-walled, one-piece plastic tank for subterranean storage and transmission of sewage or other materials. The tank comprises a bottom wall, an arched top wall and opposed end walls. The top wall is sub- stantially semi-circular in cross-section with a plurality of corrugations therearound. Along the apex area of the arch is a pair of manhole-like openings with an arced strengthening rib therebetween. The bottom wall is generally arced in cross-section with a radius very large compared to the radius of the cross-section of the top wall which causes the bottom wall to be generally flat. The end walls are arced in the longitudinal, cross-sectional and horizontal planes. The end walls each have a plurality of corrugations. In the root of one of the corrugations is a depression which contains a horizontal aperture for the egress or ingress of fluid materials. The bottom wall has a plurality of corrugations mating with the top wall corrugations such that the corrugations circumscribe the tank. Further, the bottom wall has a pair of regions one adjacent each end wall which contain a plurality of triangular inden- tations in a truss-like configuration.

339527

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