See Thrust BlockAn engineered structure, located between the jacking frame and the shaft wall, that distributes the jacking force developed by the hydraulic jacking frame over a large surface area to the ground behind the back wall of the shaft..
See Thrust Block.
See Thrust PackageThe bottom section of a split boring machine containing the cylinders and thrust block..
Mechanical component mounted on the thrust ring to prevent the thrust ring from coming into contact with and damaging the pipe collar.
Polyvinyl Chloride; a form of thermoplastic pipe.