written exam for swing cab and fixed cab Flashcards
jib is the same as saying ______?
fly
how many parts of line can you have on the whip?
1
everything above the rotating turret is called the ?
superstructure
counterweights create more ?
leverage
the ____ or _____ is used to increase boom height?
jib/fly
outriggers are used to _______?
relieve weight from the tires
assume all power lines are _________?
energized
majority of ground crew die from ?
energized power lines
warnings for power lines must be posted where?
visible from crane cab and posted outside crane
de-energized circuits must be verified by the ?
line owner
what is required when the crane is within a boom’s length of the power line?
signal person
minimum sheave size has to be how many times the nominal diameter of the rope?
16
what is measured from the heel pin to the center of the boom tip sheave
boom length
how do you calibrate the boom angle indicator?
move boom to horizontal position, set to zero
what is calculated from the center of rotation (fulcrum) to the center of the vertical load line
load radius
crane stability is based on ?
leverage
to determine load weight with a _________ load weight and factor in all the rigging
certified
capacities in a load chart are assuming _______ ______?
ideal conditions
values in a load chart are ______ capacities?
gross
gross minus deductions equals?
net load capacity
load chart capacity is based on what kind of loads?
static
what identifies the operational quadrants?
a work area diagram
what reference is used to determine the boom tip height
range diagram
rigging, hook, and blocks are all part of the ____ load?
gross
the hoist line stowed on top of the boom is/is not a deduction?
not
the __________ weight of the stowed jib is lower than the actual weight?
effective
where is the stowed boom extension pinned?
at the base section
when calculating net capacity and the rated load capacity in the chart is greater than the line pull capabilities, you must?
scratch out the rated load and plug in the permissible line pull for that block configuration
non standard attachments are a ________ from the load rating?
deduction
when capacities fall between listed values on a load chart, always go with _______ angle and _______radius.
lower/longer
a signal person must be posted when you cannot ________ ____ _________ with your outrigger extensions physically going out?
make visible contact
moving the tipping axis closer to the cranes center of gravity ______ stability?
reduces
when can you have outriggers partially out?
when the load chart specifies this is acceptable
who ensures supporting surface is prepped, shift inspection complete, and it contains ground conditions?
controlling entity
the float pads must be ______________________ when not is use?
locked and at 90 deg
when your crane is on outriggers 100% then you have to be _______- 100%
off your tires
blocking has to be _________ than your float pads?
larger
what is used to decrease ground pressure?
blocking under the float pads
what increases ground pressure and reduces stability?
span blocking
what are typical ground conditions?
loose fill, voids, tanks, depressions
where in relation to work area is the most ground pressure applied?
over the corner
what is an important site access consideration?
approach road
where are hazards and restrictions found?
on the pre-operational worksite inspection
what is a big concern with working near a new build?
back-fill compaction
capacities are based on either ______ or ________ limitations
structural/stability
wire rope drum inspections are done prior to each______?
shift
what takes a regular right hand layed rope out of service?
6 broken wires in any strand in one lay length/ 3 wires in one stand in a lay length (6 got layed, 3 got stranded)
lubrication of wire rope cannot _______ ________?
hinder visible inspection?
as layers on a wire rope drum increase, line pull will?
decrease
amount of weight drum will hoist for a given layer is called?
line pull
how many minimum wraps are allowed to remain on the wire rope drum?
2
how far above the top layer of rope must the drum flange extend?
1/2”
breaking strength divided by _________ equals safe working load?
safety factor
what is the safety factor of RRL? for rotational resistant?
RRL= 3.5
rotational resitant= 5
if socket is attached directly to a load without a swivel the line will?
spin
when do you remove rot resistant wire from service?
2 broken wires in 6 diameter length of the rope/ 4 is 6 diameter length
(2, 6 packs at 4:30)
only ___ broken wire/wires allowed near an end socket on standing wire rope?
1
the drum location indicator gives ______ and ________?
speed / direction
when is a drum location indicator required?
when the drum is not visible to the operator?
the audible outrigger / stabilizer alarm sounds when what condition is met?
when the outriggers are moving
if the radius indicator fails you must ________ the radius?
measure
when extending the boom, pay out line to avoid a _____ ________?
two block
two blocks happen when what three functions are used?
hoist up, extend out, lower boom (HEL)
when the anti two block device fails, you should?
mark the cable, use a spotter
level crane from turret. true or false?
true
level the crane within 1 % then swing the crane over ____ deg and check again?
90
when the boom length indicator fails you should?
mark the boom with distance marks
what is included in a monthly inspection?
documented shift inspection
inspections are made by a _______ person?
competent
when inspecting the boom check the _____ _____?
wear pads
jib capacities are based on ______ strength?
structural
using an offset jib will ______ load capacity
reduce
what does the PTO provide power to?
hydraulic pump
when faced with windy conditions always default to?
manufactures recommendations
heavy loads cause _______ _______- which increases the ____ ________?
boom deflection/load radius
barricaded the _______ __________ to prevent injury?
rotating superstructure
when picking from the water, load will ?
increase
when fitted with a luffing jib, it must also have a ____ _______?
limiting device
who overseas assembly and disassembly of the crane?
A/D director
operators must test brake when what conditions are met?
load is 90% of max line pull
dynamic motion will increase ________?
load radius
if power fails then you must?
set brakes and lock devices
audible signals used on the horn are 1 -2 -3 for which signals?
1 stop/2 fwd/ 3 reverse
when using voice signals give the ____ then the ______?
function/direction
when can you bypass your LMI?
during assembly/disassembly
what percent is considered a critical lift?
75%
man baskets must be ratted at ____ the rated load
5 times
D/d ratio is the ?
diameter of load divided by the diameter of the sling
what is not permitted when personnel are in a fall zone?
a sorting hook
inspect rigging prior to each ____?
use and shift
list the sling configurations from strongest to weakest
basket, vertical, choker
when assembling and disassembling, use a ________ sling
synthetic
a lift of a man basket requires the following four things?
load chart, boom angle indicator, boom height indicator, anti 2 block device
when lifting a man basket with personnel, you cannot exceed ____ rated capacity
50%
proof test _____ rated load for personnel lifts?
125%
who is not allowed in the fall zone during personnel lifts?
qualified evaluator
for duty cycle wok, reduce capacity IAW the _________?
manufacture
what is the capacity reduction for pick and carry operations?
limited to 75%
what king of wire rope is more prone to internal damage?
Rot resistant
who can give the crane operator the signal to stop?
anyone
under what conditions can operator leave the controls with a load suspended or hoisting a personnel platform?
none
what can change radius independent of the main boom?
rope that moves over sheaves and drums is?
running
what is the clearance distance for a crane operating near a 47 KV power line?
10 feet
what is the clearance distance for a crane operating near a 69 KV power line?
15 feet
what is the clearance distance for a crane operating near a 230 KV power line?
20 feet
what is the
what is the clearance distance for a crane in transit near a 12 KV power line?
6 feet
what is the clearance distance for a crane traveling near a 120 KV power line?
10 feet
if any part of equipment will get closer than ____ while traveling near a power line, then use a ______ ________
20 feet/ designated spotter
for a load chart to be valid, crane must be leveled within _____%
1
what matches a load chart to a crane?
serial number
a rough terrain craneset up on outriggers that is based on 85% tipping should have the tires?
off the ground
the values listed in a load chart show the ?
rated capacities
load radius is defined as horizontal distance from center of rotation to center line of vertical hoist with the rated load?
suspended
you pick a load and as you lift off the ground the load swings away from the crane, increasing the radius. what caused this?
unaccounted for boom deflection
crawler cranes produce the least amount of ground pressure over the ?
side
the work are chart specifies that the “over the front” area is determined by?
the manufacture
you have a load of 26,000 pounds and a line pull of 8,000 pounds. how many parts of line are needed to make the lift?
4
a load applied at an angle to the vertical plane of the boom describes?
side loading
rapid hoist acceleration does what?
produces hook loads higher than the actual load weight
