Abstract: A manhole for connecting fluid flow between and for providing access to an inlet pipe and an outlet pipe angularly oriented to one another in a sewage, storm water or like fluid handling system. The manhole comprises an upright housing which defines a manhole interior, the housing having first and second essentially planar upstanding outer sidewalls angularly oriented to one another at substantially the same angle as between the inlet and outlet pipes and a curved upstanding outer side wall extending between the first and second planar sidewalls. First and second openings are formed respectively through the first and second planar sidewalls into the manhole interior for receiving respective ends of the inlet and outlet pipes. A base section within the manhole interior defines a curvilinear fluid flow trough between the first and second openings for conveying fluid flow from the inlet pipe to the outlet pipe.

Abstract: An improved method and apparatus for attaching a hole former to a mold assembly for use in the formation of cast materials such as concrete and the like. The apparatus comprises a hole former assembly attached to a bracket. The bracket is held in a stationary position by a magnet assembly that is remotely located from the hole former. The magnet assembly is comprised of a plurality of magnets encased in a metal casing. An expendable blister pack can be provided to fit on the outside of the casing to facilitate removal of the magnetic assembly from the cast member.

Abstract: Sewage manholes having a deteriorated or defective manhole housing which is subject to undesired ground water infiltration are rehabilitated by inserting annularly expandable tubular sleeve assemblies partially into each inflow and outflow pipe of the manhole, connecting the sleeve assemblies to one another via an annularly-closed tubular conduit or network of tubular conduits and then sealing the sleeve assemblies to the inflow and outflow pipes and to the tubular conduit or conduits to form a fluid flow path between the inflow and outflow pipes which is sealably enclosed against water infiltration and sewage exfiltration.