Abstract: In some embodiments, the disclosure is directed to a cable tensioning unit. In some embodiments, the cable tensioning unit includes a hydraulic jack mounting on a unit housing. In some embodiments, the unit housing includes a control panel with one or more actuators configured to control one or more pulling functions. In some embodiments, the cable tensioning unit includes a controller and a controller interface that enables a user to set interlocks and/or enter pull information. In some embodiments, pull information includes one or more of bed number, bed length, strand size, strand number, target initial tension, target final tension, target final elongation, date, time, actual initial tension, and/or actual final tension. In some embodiments, the controller is configured to automatically save data during one or more transient operations. In some embodiments, the controller is configured to display if pull information is within a tolerance during a pull operation.

Abstract: A concrete mold form (10) is provided to form concrete products such as concrete bridge girder (12). The form (10) has first and second side forms (14, 16) which are supported on carriages (22) riding on tracks (24) for moving the side forms (14, 16) between a closed position to cast the product and an open position to allow the cast product to be removed. At least one of the carriages (22) is a powered carriage (22P, 22M) which rotates a roller (28, 70) engaging the track with a hydraulic motor (38) to move the side form between the closed and open positions.