Machine Roller
See Cam Follower.
See Cam Follower.
A blockage (structural defect, collapse, protruding service connection, debris) which prohibits manhole-to-manhole cleaning, TV inspections pipe flow, or rehabilitation procedures.
The time spent to add a pipe segment and make connections.
See ShankA hardened male hex bar, containing one or more transverse holes, to couple and hold in a female hex connector..
Description of a pipe or excavation which can be physically entered by an operative.