WAC 296-307-52025. Dockboards (bridge plates)

(1) Portable and powered dockboards must be strong enough to support the load carried on them. (2) Portable dockboards must be secured in position, either by anchors or anti-slipping devices. (3) Powered dockboards must meet the design and construction requirements of Commercial Standard CS202-56 (1956) "Industrial Lifts and Hinged Loading Ramps" published by the U.S. Department of Commerce. (4) Dockboard or bridge plates must be driven over carefully and slowly and their rated capacity never exceeded. (5) Portable dockboards must have handholds for safe handling. (6) Railroad cars must be kept stationary while dockboards or bridge plates are in position.