Concrete removal on elevated structures posses several problems including manpower access, equipment access and project staging and logistics.
Rampart solved all these problems by combining the hydrodemolition equipment with access equipment that was completely maneuverable and remote control. Four man-lifts were converted into hydrodemolition robots. All of the man-lifts controls were placed in a remote control box along with seven new hydraulic functions that manipulated the cutting nozzle three dimensionally. The operator and control panel were located in a second man-lift. From his location, the operator could control all the functions of the hydrodemolition robot, which allowed the robot to be quickly placed in position. Specific locations for concrete removal had been identified requiring constant movement and repositioning of the robot.
Concrete removal was performed on cross bracing, floor beams, girders and other bridge elements which required the cutting head have three-dimensional movement. Removal ranged from 6 feet below grade to 56 feet above grade. 