For all crane stops:
Use in pairs Align stops Do not use at end of crane run
Allow ample distance between crane stops and the object to be protected
Isolate a Crane Undergoing Repairs
Cushion-Slide Crane Stops
Drag plates allow wedge to slide some distance to absorb impact. On smaller sizes of rail, plates may interfere with rail hook bolts - use non-slide crane stops in such cases.
Protect Workers from Crane Overrun
Non-Slide Crane Stops
Wedge dogs lock wedge to rail head and do not interfere with rail hook bolts. On impact, stops may slide minimally. Tighten bolts frequently.
Single or Multiple Crane Operations
(ii) Stops shall be fastened to resist forces applied when contacted.
(iii) A stop engaging the tread of the wheel shall be of a height at least equal to the radius of the wheel.
(e) Where other cranes are in operation on the same runway, rail stops or other suitable means shall be provided to prevent interference with the idle crane