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NCCCO TOWER CRANE FINAL EXAM UPDATED
QUESTIONS & REVISED SOLUTIONS ALREADY A+
GRADED
Splices in rall tracks shall have - CORRECT ANSWER >>> Smooth Joints
Hydraulic systems should have their proper fluid level checked -^ CORRECT ANSWER
>>> Daily
If power fails during operations, the following shouldn't apply -^ CORRECT ANSWER^ >>> Do
your best to finish moving load where it was designated to go If load is undetermined who is to find out if load weight does not exceed crane rating at radius
at which the load is to be lifted - CORRECT ANSWER >>> Person responsible for lift
Where should climbing instructions be kept - CORRECT ANSWER >>> ON Site
All climbing operations shall be performed under the supervision of -^ CORRECT ANSWER
>>> Qualified person
When cranes are erected, load limiting devices shall be tested for proper setting and operation -
CORRECT ANSWER >>> Before crane is placed in service
Hooks shall be equipped with latches unless the application makes the use of the latch -
CORRECT ANSWER >>> Impractical
Size and position of signs or panels must satisfy the limitations of -^ CORRECT ANSWER
>>> Manufacturer
Fall prevention measures are needed for working at locations where you are exposed -
CORRECT ANSWER >>> To a fall of 6ft or more
Travel distance on hand levers shall not be greater - CORRECT ANSWER >>> than 14 inches
from neutral position For power lines rated 175KV the minimum clearance between the lines and any part of the
crane or load is - CORRECT ANSWER >>> 15ft
All controls shall be tested by the operator at the - CORRECT ANSWER >>> start of new shift
Before each climbing operation all load members of the support system shall be - CORRECT
ANSWER >>> Inspected
Chain slings are required to be - CORRECT ANSWER >>> ID tagged
Welding on loads suspended by the crane can only be done if the load has - CORRECT
ANSWER >>> Insulated slings
How much does an average cubic yard of concrete weight - CORRECT ANSWER >>> 4,000 lbs
A velocity readout shall be provided - CORRECT ANSWER >>> At the operators station
The area inside the self erecting tower cranes tail swing must be -^ CORRECT ANSWER
>>> Barricaded
The self erecting tower crane must be properly grounded according with the - CORRECT
ANSWER >>> National electric code (NEC)
Self Erecting tower crane erection must be performed by -^ CORRECT ANSWER^ >>> Qualified
person Extensive planning must occur before a self erecting tower crane arrives on the job site. The
plan should be divided into two major sections as follows -^ CORRECT ANSWER^ >>> Delivery,
set up, erection and dismantle - Lifting operations
According to ASME B30.3 the minimum wraps to be left on a hoist drum are - CORRECT
ANSWER >>> 3
How much does a cubic foot of steel weigh - CORRECT ANSWER >>> 490lbs
When operating a tower crane and there is an uncontrolled movement, the operator should -
CORRECT ANSWER >>> Engage emergency stop
What will not create a change in stability - CORRECT ANSWER >>> Pulling off a fixed load
When performing a load test on a tower crane that travels. How should the job be set -
CORRECT ANSWER >>> So the maximum weight is on the bogie
When plumbing a tower crane after it has been climbed, the crane must - CORRECT
ANSWER >>> be balanced
Which of the following OSHA regulations govern suspended personnel platforms - CORRECT
ANSWER >>> OSHA 1926.550(g)
According to ASME B30.3, the prohibited zone for power lines that are 60kV is - CORRECT
ANSWER >>> 15ft. ASME 3-3.3.4.3(1) Table 1
According to ASMA 30.3, load hoist rotation resistant wire rope has a design factor of -
CORRECT ANSWER >>> 5 to 1 ASME 3-1.5.5(b)
According to ASME B30.3, when lifting a suspended personnel platform the design factor for the
rigging hardware is - CORRECT ANSWER >>> 5 to 1 ASME 3-3.2.2(b)(3)
According to ASME B30.3, Load hoist ropes that are not rotation must have a design factor of -
CORRECT ANSWER >>> 5 to 1 ASME 3-1.5.5(b)
The OSHA construction standard for rigging equipment is -^ CORRECT ANSWER^ >>> 1926.
According to ASMA B30.3, on whose recommendations should a preventative maintenance
program be set up - CORRECT ANSWER >>> Crane manufacturer ASME 3-2.3.1(a)
According to OSHA a frequent inspection is - CORRECT ANSWER >>> Daily to monthly OSHA
1910.180(d)(2)(i)
According to OSHA a periodic inspection is - CORRECT ANSWER >>> Monthly to annually
OSHA 1910.180(d)(2)(ii)
Cranes idle for more than six months must have inspections performed: - CORRECT
ANSWER >>> Frequent and Periodic ASME 3-2.1.5(b)
Cranes idle for less than six months must have inspections performed: - CORRECT
ANSWER >>> Frequent ASME 3-2.1.5(a)
Cranes lifting personnel platform must have the platform and rigging inspected: - CORRECT
ANSWER >>> Prior to each shift ASME 3-3.2.2(c)(1)
Crane hooks must not be twisted in excess of: - CORRECT ANSWER >>> 10 degrees OSHA
1910.180(d)(3)(v)
A Crane hooks throat open must not exceed - CORRECT ANSWER >>> 15% of its original size
OSHA 1910.180(d)(3)(v)
By order of hitch strength which is the correct answer - CORRECT ANSWER >>> Basket,
Vertical, Choker According to ASME B30.3 and OSHA you should always have at least how many. wraps on a
hoist drum - CORRECT ANSWER >>> 2 ASME 3-3.2.1(d)(7)
What is the minimum allowable distance from the crane and power lines under 50kV -
CORRECT ANSWER >>> 10ft 3-3.4.3(1)
According to ASME B30.3, how many randomly broken wires must there be to remove a running
wire rope from serivce - CORRECT ANSWER >>> 12 ASME 3-3.4.3(b)(1)
According to ASME B30.3 when working near power lines when is a signal person required -
CORRECT ANSWER >>> When crane moves within a booms length of power lines ASME
3 - 3.4.3(a)(3) According to OSHA after the crane has been checked out and before personnel lift operations
begin the crew should - CORRECT ANSWER >>> Have a pre-lift meeting OSHA 1926.550(g)(8)
According to OSHA when is it safe to work closer than the allowable distance from the power
lines - CORRECT ANSWER >>> When utility company says lines are de-energized OSHA
1926.550(a)(15)(vi)
When should a tagline be used - CORRECT ANSWER >>> When rotation of load would be
dangerous ASME 3-3.2.1(d)(8)
What is the minimum design factor required for a boom hoist rope -^ CORRECT ANSWER
>>> 3.55 ASME 3-1.5.5(c)
How many broken wires must be present in one stand on one lay for running wire rope to be
removed from service - CORRECT ANSWER >>> 4 ASME 3-2.4.3(b)(1)
When ready to torque the nut on a high tensile bolt connection you should - CORRECT
ANSWER >>> Lubricate threads TCCM bolting 4- 8
During tightening of high tensile connections the bolt is stretched tom a specific percentage of
its elastic limit at the correct - CORRECT ANSWER >>> Torque TCCM bolting 4- 9
Preferably the tightening torque shall be applied to the - CORRECT ANSWER >>> Nut TCCM
bolting 4- 9 The tightening torque values placed on the nuts and bolts of high tensile bolt connection are
dependent on the - CORRECT ANSWER >>> type and size. TCCM bolting 4- 9
What components of a tower crane are connected with high/tensile bolt connections? -
CORRECT ANSWER >>> Foundation anchors, tower sections, slewing, ring support TCCM
bolting 4- 2
When the tower base bolts are torque the counter job should be positioned - CORRECT
ANSWER >>> 0 degrees from the bolt
According to the NCCCO Tower Crane reference manual what items below should be part of the
operators daily pre check - CORRECT ANSWER >>> Wire ropes limit switches. TCCM
maintenance 2- 19 According to the NCCCO Tower Crane reference manual, how any safety turns (wraps) must be
left on the hoist drum when the load hook is in its lowest position -^ CORRECT ANSWER
>>> 3 TCCM wire rope 5- 1
According to NCCCO tower crane reference manual when possible installing the hoist wire rope on a tower crane you should wind the rope with approximately how much of the maximum
permissible load - CORRECT ANSWER >>> 10% TCCM Wire rope 5- 1
According to the ASME B30.3 what is the design factor for rotation resistant load hoist wire rope
- CORRECT ANSWER >>> 5.0 to 1 ASME 3-15.5 (b)
Who determines the correct hoist wire rope to be installed on tower cranes - CORRECT
ANSWER >>> Manufacturer
When is it permitted to shift the hoist gear of a tower crane -^ CORRECT ANSWER
>>> Neutral Gear
According to ASME B30.3 an overhead power line is always considered to be - CORRECT
ANSWER >>> Energized until the power company had verified it is not energized
According to ASME B30.3 maintenance personnel are permitted to operate the crane only when
- CORRECT ANSWER >>> Performing their duties According to ASME B30.3 who should be present when telescoping or climbing operations begin - CORRECT ANSWER >>> Operator According to OSHA 1926.550 when a wire rope bridle is used to connect the personnel platform
to the load line, each bridle leg shall be connected to a - CORRECT ANSWER >>> Master Link
Hand Signals to Construction Tower Crane operators shall be those prescribed by - CORRECT
ANSWER >>> ASME B30.
According to OSHA 1926.550 what shall be provided at both ends of travel of the trolley -
CORRECT ANSWER >>> Buffers
According to ASME B30.3 all controls shall be tested by the operator -^ CORRECT ANSWER
>>> At the start of a new shift
According to a metric conversion table bars multiplied by 14.50377377 equals - CORRECT
ANSWER >>> pounds per square inch
According to the length conversion table, meters multiplied by 3.280839895 equals -
CORRECT ANSWER >>> Feet
According to ASME B30.3 a class __________ Fire extinguisher shall be kept in the cab or on the
machinery platform - CORRECT ANSWER >>> 10BC
According to OSHA 1926-550 a Class __________ Fire extinguisher shall be kept in the cab or on
the machinery platform - CORRECT ANSWER >>> 5BC or higher
According to ASME B30.3 where must the wind velocity - indicating device be mounted -
CORRECT ANSWER >>> At or near the top of the crane
According to ASME B30.3 a frequent inspection shall be performed by a/an - CORRECT
ANSWER >>> Designated Person
According to ASME B30.3 a frequent inspection in light service conditions must be performed -
CORRECT ANSWER >>> monthly
According to ASME B30.3 a frequent inspection in normal service conditions must be performed
- CORRECT ANSWER >>> weekly to monthly
According to ASMe B30.3 a frequent inspection in heavy service conditions must be performed -
CORRECT ANSWER >>> daily to weekly
According to ASME B30.3 who should be present during climbing or telescoping operation -
CORRECT ANSWER >>> Operator
According to ASME B30.3 the operator shall test brakes each time lifting a rated load by -
CORRECT ANSWER >>> Lifting it a few inches and applying the brakes
According to ASME B30.3 personnel platforms shall be limited to a capacity of ____________
persons - CORRECT ANSWER >>> 6
According to OSHA 1926.550 (g) personnel platforms shall be limited to how many occupants -
CORRECT ANSWER >>> Number required for the work being performed
According to ASME B30.3 personnel platform shall be proof tested with what percentage of the
platforms rated capacity - CORRECT ANSWER >>> 200%
According to ASME B30.3 what is the duration of a proof test - CORRECT ANSWER >>> 5
Minutes
According to B30.3 personnel platform should not be used in winds in excess of - CORRECT
ANSWER >>> 15mph
According to ASME B30.3 if any controls do not operate properly they shall be adjusted or
repaired prior to - CORRECT ANSWER >>> Commencing the next lift operation
According to OSHA wire rope slings shall not be used it, in any length of eight diameters, the total number of visible broken wires exceeds ____________ percent of the total number of
wires - CORRECT ANSWER >>> 10
According to OSHA 1926-251 rigging hardware shall be inspected - CORRECT ANSWER
>>> Prior to each shift
According to OSHA 1926-251 custom designed rigging hardware shall be proof test to
_________ percent of their rated load - CORRECT ANSWER >>> 125
According to OSHA 1926-251 a safety factor of ______ must be maintained on all wire rope
slings - CORRECT ANSWER >>> 5
According to OSHA 1926.251 all rigging and rigging hardware must be inspected by a -
CORRECT ANSWER >>> competent person
The maximum included angle allowed when attaching the slings directly to the hook is
__________ degrees - CORRECT ANSWER >>> 90
Slings shall be removed from service if hooks are cracked or have been opened more than
________ percent of the normal throat opening measured at the narrowest point -
CORRECT ANSWER >>> 15
Slings shall be removed from service if hooks are twisted more than ______ degrees from the
plane of the unbent hook - CORRECT ANSWER >>> 10
According to OSHA 1926.753 cranes being used in steel erection activities shall be visually
inspected by a competent person - CORRECT ANSWER >>> Prior to each shift
According to ASME B30.3 a periodic inspection shall be performed by a/an - CORRECT
ANSWER >>> Appointed person
According to sheet C in the tower crane configuration manual how many B type blocks are required on layer 2? The hook radius is 164 feet you have 7 tower sections and the guide
section is on the crane - CORRECT ANSWER >>> 4
Central ballast blocks must be distributed around the tower base -^ CORRECT ANSWER
>>> Equally
According to the Tower Crane Reference Manual how often should the hoist wire rope be
lubricated - CORRECT ANSWER >>> 200 hours of operatin
According to the Tower Crane Reference Manual using the twist free wire rope the twist
compensator should generally be - CORRECT ANSWER >>> Open
Tower Crane Load hooks must be inspected each time crane is erected or once every -
CORRECT ANSWER >>> Year
When installing a wedge socket with wire rope how long should the tail length of the dead end
be using standard 6 to 8 strand rope - CORRECT ANSWER >>> 6
What is the task of high tensile bolt connections between tower sections - CORRECT
ANSWER >>> Connecting components and transmitting forces
