(11)Warpers.-Swiveled double-bar gates shall be installed on all warpers operating in excess of 410 meters/min. These gates shall have interlocking arrangement, except for the purpose of inching or jogging:Provided that the top and bottom bars of the gate shall be at least 1.05 and 0.53 meters high from the floor or working platforms and the gate shall be located 38 mm. from the vertical tangement to the beam head.
