Study Material
the operational quadrant between the left-or-right-side outriggers is - CORRECT
ANSWER-over-the-side
cranes are typically built to be - CORRECT ANSWER-longer than they are wide
in a multiple-crane lift, the crane with the greatest net capacity must always be -
CORRECT ANSWER-closest to the loads center of gravity
leverage is defined as - CORRECT ANSWER-the power applied to a lever to cause the
load to move
the quadrant that is located between the rear outriggers or crawlers in the rearward
direction of travel is known as - CORRECT ANSWER-over-the-rear
what dynamic occurs when a load is hoisted from a point other than directly over the
load - CORRECT ANSWER-pendulum effect
the sudden release of a load that causes a rapid change in effective load weight is
called - CORRECT ANSWER-acceleration
backward stability of a crane is affected by - CORRECT ANSWER-high boom angles
and inclines
a loads center of gravity in relation to the tipping axis is affected by all of the following
except - CORRECT ANSWER-raising or lowering the load
a cranes stability is affected by all of the following except - CORRECT ANSWER-
centered lift
to find the parts of line, the operator - CORRECT ANSWER-divides the suspended
weight by the WLL of the hoist rope
a document that outlines all weight, rigging, and configuration requirements for a lift is a
- CORRECT ANSWER-lift plan
when a bundle of rebar is being lifted with two slings in a choker hitch, the sling eyes
, m
should mbe mthreaded min mthe mopposite mdirection mto mimprove mload mstability m-
mCORRECT
m
ANSWER-false
m
adjustable mlifting mbeams mare mlimited mby m- mCORRECT mANSWER-wire mrope mslings m
m
spreader mbeams mare mtested mat mwhat mpercent mof mtheir mrated mcapacity m-
mCORRECT m
m
ANSWER-125
m
the mformula mfor mdetermining mthe mWLL mof ma mbridle mhitch mis m- mCORRECT mANSWER-
WLL m= m
m
(W)(H/L)(2
)
m
WLL m= m(one msling min ma mstraight mpull)(distance mbetween mhook mand mload/length mof
msling
m
legs)(2)
m
a msling mangle mis mconsidered mhazardous mif mit mless mthan m______ mdegrees mfrom
mhorizontal m-
m
CORRECT mANSWER-
45
m
doubling mthe mdepth mof ma mcribbing mbeam mincreases mthe mWLL mby ma mfactor mof m-
mCORRECT m
m
ANSWER-four
m
a mtest mlift mis mrecommended mbefore m- mCORRECT mANSWER-a mcritical mlift m
m
during mcritical mlift moperation, mthe moperator mmust mobey ma(n) m_______ msignal mat mall
mtimes m-
m
CORRECT mANSWER-emergency
mstop
m
the m_____ mgives mextra mstability mto mthe mcrane mduring mlifting moperations m-
mCORRECT m
m
ANSWER-counterweight
m
crane mcapacities mmust mbe mreduced mfor mlower mtire minflation mpressure m-
mCORRECT m
m
ANSWER-true
m
crane mmanufactures mproduce mseparate mload/capacity mcharts for
m certain
m
moperational m
m
quadrants m- mCORRECT mANSWER-
true
m