TM 5-3810-307-10
It is most important that each lift be planned in advance, and the correct sequence
of steps accomplished as follows:
Determine weight of load to be lifted.
Review where load must be moved relative to its current resting place.
Determine from the load charts the most suitable crane configuration to use, and
the best place to locate the crane, so that the entire task of lifting and moving the
load can be accomplished without exceeding any load capacity limits.
NOTE
Remember that the load radius diagrams appearing
in the load chart correspond to the suspended load,
not the radius of the load relative to the crane before
the load is lifted. Therefore the crane must be
located somewhat closer to the load than the listed
radius, or the boom angle and/or length adjusted
appropriately before making the lift, so that structural
deflections that occur as the load is lifted do not result
in the allowable load radius being exceeded when the
load clears the ground.
Determine the number of parts of line required to make the lift (weight of the load
divided by the permissible line pull).
Situate the crane appropriately for the lift.
Program the LMI.
Only when all the above have been accomplished, in sequence, make the lift.
Setting the Outriggers.
WARNING
Death or serious injury could result from not properly
setting the crane up on outriggers.
The outriggers must be set and the crane must be
level before any other crane operation is attempted,
unless lifting on rubber. Failure to comply could
result in injury or death.
All four outrigger beams must be fully extended (and
the crane level) before beginning craning operations
on outriggers.
The crane operator must select that portion of the
load chart applicable to the crane when "on
outriggers" and "on rubber".
a.
Place the outrigger floats approximately 5 feet (1.5 m) directly out from each
outrigger.
5-80
