Trash Rack screens with vertical flat bars or Wire Mesh spaced apart is used to prevent large floating wastes or Debris from travelling further into intake structure, pumping station and treatment plants. The screen is provided either with rollers for smooth movement Or Without rollers. Sometimes trash rack screens are also used as fixed type screens with manual cleaning arrangement In movable screens it have motorized operation to raise or lower the screen. The cleaning of screen has to be done manually after raising the screen up to operating platform.