Timber or steel - ANSWERThese materials should be used when setting up on soft surfaces such as soft ground, asphalt or backfilled material
Over the corner - ANSWEROn crawler cranes, which boom position creates the greatest ground pressure
Blocking - ANSWERAllows the weight of the crane and l...
Timber or steel - ANSWERThese materials should be used when setting up on soft surfaces such as
soft ground, asphalt or backfilled material
Over the corner - ANSWEROn crawler cranes, which boom position creates the greatest ground
pressure
Blocking - ANSWERAllows the weight of the crane and load to be distributed over a greater surface
area. Should be used under outrigger floats at all times.
3 - ANSWERBlocking should be at least how many times the surface area of the float
Energized - ANSWEROverhead power lines must be considered to be in this condition until electrical
authorities indicate otherwise
Prohibited zone - ANSWERNo part of the crane or load must ever enter this area around an energized
power line
kV - ANSWERThe prohibited zone must be enlarged as this increases
20 foot - ANSWERWhat minimum distance does OSHA require be maintained when voltage up to 350
kV is unknown
50 foot - ANSWERWhat minimum distance is required if the voltage is over 350 kV and unknown
Qualified signal person - ANSWERThis person must be appointed any time the crane is working
within a boom's length of the prohibited zone
Tag lines - ANSWERThe use of these should be avoided when lifting near power lines, however if
necessary should be non-conductive type
, Above power lines - ANSWERAvoid operating cranes or handling materials in this area of power lines
1% - ANSWERLoad chart capacities are based on the crane being level within this percentage
carpenter's level - ANSWERUse this tool placed under or close to the boom foot for an accurate
measure of level
90 degrees - ANSWERSwing the boom to this degree over the side and check for level again
Remain in the cab - ANSWERWhat does an operator do if the crane comes in contact with a power
line
Jump - ANSWERIf it is necessary to leave the crane cab before power lines are de-energized after
contact, how does the operator exit the cab
transmission towers - ANSWERA crane can also become electrically charged when working close to
these (radio, microwave, cell)
Manufacturer - ANSWERBefore traveling on site with a load, be sure that this is allowed by the
Backward collapse - ANSWEREnsure the boom low enough when traveling with a load to avoid the
possibility of this
Toward the load - ANSWERAlways travel in this direction when traveling with a load
Boom extension, jib, or pinned section - ANSWERMost manufacturers do not permit travel with a
load when the boom is in these settings
Raised - ANSWERTo prevent a lattice boom crane from tipping forward, the boom should be in this
position before traveling down an incline
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