Extension for a canal bed liner

Details Extension for a canal bed liner Extension for a canal bed liner

E - Fixed Constructions

02

D

E02D 29/12 (2006.01) E02D 29/14 (2006.01)

Patent

CA 2315611

An extension collar suitable for engagement with an upper ledge of an invert liner positioned within the canal bed of the base of a manhole or catch basin structure. The extension collar is replaceable and is suitable for use in either new construction or rehabilitation of the manhole structure. A plurality of extension collars may be sealably stacked one on top of the other to create a corrosion resistant barrier at a desired height from the bottom of the base of the manhole or catch basin.

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