Lined structure and liner

Details Lined structure and liner Lined structure and liner

1993-10-08

1995-01-24

Ridgill, Jr., James L.

Static structures (e.g., buildings)

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

With additional enclosure structure; e.g., manhole

52249, 52269, 138146, 220461, 264255, 264276, 428183, E04B 164, E02D 2914

Patent

active

053833112

ABSTRACT:
A plastic liner for protecting concrete manhole interior surfaces from corrosion wherein the liner includes provisions for creating a strong mechanical lock between the liner and the interior surfaces. A side of the liner which includes the provisions has a plurality of raised hollow projections with spaced sections. The mechanical lock is created when concrete is poured against the side of the liner with the projections. The concrete at least partially enters the hollow portions and fills spaces between the projection sections. The projections also intersect to enhance the mechanical lock by preventing bulging. Liner sections cover essentially all of the manhole interior surfaces. Forming a liner section by rotationally molding the plastic and cutting gaps into the projections is also disclosed.

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