TM 10-3950-672-10
3. Coordinate lifting plans with the operator, engineer, and signal person prior to beginning the lift.
4. Use cranes and rigging of equal capabilities and use the same boom length. Be , , certain cranes are of
adequate lifting capacity.
5. Use outriggers on cranes so equipped.
6. Calculate the amount of weight to be lifted by each crane and attach slings at the correct points for proper weight
distribution.
7. Lift only from a stationary position DO NOT TRAVEL.
8. If possible, provide approved radio equipment for voice communication between all parties engaged in the lift.
9. Ensure the load lines are directly over the attach points to avoid side loading the cranes.
Always use enough parts-of-line to accommodate heavy lifts. Provide a safety allowance and reeve more parts of line,
rather than fewer parts, than you need. Refer to the values on the load capacity chart for the line weight ratios.
Watch the tail-swing of the revolving superstructure, especially if there are people or obstacles in the area.
Always make daily inspections of the wire rope and replace worn, rusty, or frayed ropes.
Always place the load on the ground when lubricating or adjusting.
A qualified signalman should be available at all times and especially when;
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working in vicinity of power lines
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the crane operator cannot clearly see the load at all times
-
moving the crane in an area or direction in which the operator cannot clearly see
the path of travel.
At all times use standardized hand signals previously agreed on and completely understood by the operator.
If communication with the signalman is lost, crane movement must be stopped until contact is regained.
Watch the load at all times. Watch the signalman and/or load while it is moving. In case you must look in another
direction, stop the operation immediately.
Use only one qualified signalman whenever vision is obscured and follow only his directions.
BUT...obey a signal to stop from anyone.
KEEP THE BOOM SHORT. Swinging loads with a long line can create an unstable condition and possible structural
failure of the boom.
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