Manhole collar assembly and method for producing same

Details Manhole collar assembly and method for producing same Manhole collar assembly and method for producing same

1998-05-14

1999-08-10

Will, Thomas B.

Road structure, process, or apparatus

Pavement

Vault cover-closure

404 25, 249 4, 249 5, 249188, 2492191, 5274519, E02D 2914, E01C 700, E04G 1700

Patent

active

059348208

ABSTRACT:
The present invention provides a system, for raising a manhole ring during construction or roads, that includes placing a generally tubular form on a manhole cone in an excavation, and a method and trimming/cutting tool for adjusting the height of the form. Preferably, the cutting tool is positioned inside the form and is rotated around to cut a ring of material off of the top of the form. The cutting tool is set at an elevation, indexed off of the pavement around the excavation, which results in the form being cut to a height that can support a manhole ring at a proper elevation to be flush with the pavement surface of a particular site. Once the manhole ring is placed on the trimmed form, a single pour of concrete may be done to create a concrete collar that fills and seals the vertical space between the manhole cone and ring. The form may include a stabilizing system for holding the form in place on the manhole cone.

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