Manhole adjusting extension ring section

Details Manhole adjusting extension ring section Manhole adjusting extension ring section

E - Fixed Constructions

03

F

E03F 5/02 (2006.01) E02D 29/14 (2006.01) E02D 29/12 (2006.01)

Patent

CA 2151069

A molded plastic extension member for use in increasing the height of manholes, or catch basins when surfacing or resurfacing a roadway is described. A wedge to adjust the angle of the catch basin support frame or the manhole cover support frame is also described. The extension includes a pocket for reducing the total surface area of the molded plastic member. It also includes a shoulder that interlocks with either the manhole cone, the catch basin cone, or with other stackable molded plastic members. The extension also contains a planer support surface which provides rigidity and support, and provides a surface for caulking to be applied to form a watertight seal.

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