Abstract: A system and method for inserting pre-cast concrete pile caps under wooden railroad bridges without removing essential load bearing rails, cross-ties, and stringers is disclosed. The system and method minimizes the time that the track is closed to normal rail traffic. The system and method uses recycled oil well drill pipes that are cast into pile caps so that female-threaded ends are flushed with an upper surface of the pile caps. Lifting rods have male threaded ends that are used with a multi-point lifting device that allows the pile cap to be slipped under the existing bridge in a number of small incremental steps utilizing the spaces between wooden bridge stringers.

Abstract: A hydraulically operated side dump railroad car that operates by utilizing high pressure hydraulic fluid from delivered by a pneumatic to hydraulic converter pump located on the railroad car. On the railroad dump car, the hydraulic fluid is pumped from a hydraulic fluid reservoir to the hydraulic ram assembly of the car, without the use of an accumulator for storing pressurized hydraulic fluid. On the other hand, an existing railroad dump car having existing pneumatic equipment can easily retrofitted with the hydraulic system of the present invention with the use of standard train air brake piston and cylinders.