Stackable riser for on-site waste and drainage systems

Details Stackable riser for on-site waste and drainage systems Stackable riser for on-site waste and drainage systems

1996-12-19

1998-12-29

Friedman, Carl D.

Static structures (e.g., buildings)

With entrance for persons or objects in horizontal or...

With additional enclosure structure; e.g., manhole

52 791, 52136, 220 426, 405136, 405 41, E02D 2914

Patent

active

058529012

ABSTRACT:
A plastic stackable riser for providing a grade level access for underground components such as septic tanks, distribution boxes, and drop boxes, including a cylindrical side wall having a top free edge and a bottom edge. The top free edge defines a first end opening and the second bottom edge is connected to a generally inverted U-shaped connecting member which defines a channel shaped to receive the first free edge portion of an adjacent stackable riser. In use, a plurality of stackable risers are interlocked together so that the side walls all extend along common vertical axes to the underground component and provide a gas-tight, liquid-tight column above the underground component.

REFERENCES:
patent: 5617679 (1997-04-01), Meyers

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