rigging test Flashcards
This type of wire rope consists of a number of wires twisted to the left around a
small core to form strands which are then twisted to the right around a main
core to form the final rope. What type of rope construction would this be called?
A) Left Lang lay C) Right regular lay
B) Right Lang lay D) Left regular lay
C: right regular lay
What is the most common wire rope used in a plant, with a breaking load of 110
to 120 tons psi. ?
A) Traction grade C) Improved plow grade
B) Special improved plow D) Standard grade
C: improved plow grade
What type of operation is performed in wire ropes which prevent it from flying
apart when cut ?
A) Preforming C) Snubbing
B) Seizing D) Wrapping
A: Preforming
How are wire ropes classified?
A) Circumference and diameter C) Number and lay length
B) Number of wires & strands D) Number and type of lay
B: number of wires and strands
How is wire rope sized?
A) Circumference C) Length
B) Greatest diameter D) Minor diameter
B: Greatest Diameter
Before cutting a length of wire rope from a reel, each side of the proposed cut
should be:
A) Preformed C) Snubbed
B) Seized D) Coupled
B: Seized
Depending on the equipment being used, the fleet angle for grooved drums should
never exceed:
A) 1.1 deg. C) 1.5 deg.
B) 1.25deg. D) 2 deg.
B:1.25 Degrees
The most common way of attaching the free end of a wire rope to a piece of
equipment or an anchor is by using what type of rigging hardware?
A) Crosby clips C) Sockets
B) Shackles D) Thimbles
A: Crosby Clips
Where the main wire rope is changed frequently, the method of attachment is by
using:
A) Crosby clips C) Eye bolts
B) Zinc sockets D) Wedge sockets
D: Wedge Sockets
When installing u-bolt clips in conjunction with wire rope, the u-bolt is installed
on the:
A) Live end C) Rolling end
B) Standing end D) Dead end
D: dead end
What type of synthetic fibre rope is used where shock loading is common?
A) Hemp C) Nylon
B) Polyethylene D) Cotton
C: Nylon
When a rope is spliced to a hook, ring or pulley block, in order to prevent
excessive wear on the rope you would install a:
A) Eye C) Cable clip
B) Socket D) Thimble
D: Thimble
The type of knot to use when you tie together two lines of the same size so they
will not slip is:
A) Bowline C) Sheet bend
B) Granny D) Reef
D: Reef Knot
The type of knot to use when you tie together two lines of unequal size is:
A) Bowline C) Sheet bend
B) Granny D) Reef
C: Sheet Bend
The size and type of hoisting tackle to use in any lifting operation will be
determined by:
A) Type of load C) Location of load
B) Size of load D) Weight of load
D: Weight of load
The pipes or peeler cores used in rolling of skids are to be no less than ___” in diameter.
A) 2” C) 4”
B) 3” D) 6”
B: 3” diameter
A jack that should never be relied upon to hold a load for longer than the period
of the actual lift is:
A) Hydraulic C) Ratchet
B) Screw D) Lever
A: Hydraulic
When two or more turns of rope are placed around a fixed object, in order to hold
a load or lower it slowly, this is referred to as:
A) Wrapping C) Preforming
B) Snubbing D) Seizing
B: Snubbing
In a chain block, one component is deliberately designed weaker than any other
part of the block, this part is:
A) Load chain C) Load clutch
B) Top hook D) Load hook
D: Load hook
When referring to bridle slings, the angle between the slings at the hook is
referred to as:
A) Lifting angle C) Sling angle
B) Choking angle D) Critical angle
D: critical Angle
The size and capacity of chain is determined by measuring the:
A) Diameter of link C) Length of link
B) Width of link D) Circumference of link
A: Diameter of the link
For general rigging procedures, what is the minimum safety factor?
A) 4 : 1 C) 6 : 1
B) 5 : 1 D) 10 : 1
B: 5:1
When the transportation of people is involved the safety increases to:
A) 8 : 1 C) 10 : 1
B) 15 : 1 D) 20 : 1
C: 10:1
Fiber rope is measured in two ways depending on the size of the rope. How do
you measure 1 1\2” rope?
A) Diameter C) Circumference
B) Length D) Strand diameter
C: Circumference
Lubricating wire ropes used in hoisting equipment will increase the life of the
rope by:
A) Preventing oxidation C) Reducing external friction
B) Eliminating internal friction D) Penetrating the core
A: Preventing Oxidation
What gives natural fiber rope its stability and keeps it from twisting under
strain?
A) The lay of the strands C) The twisting pattern
B) The number of yarns D) Reverse order of twisting
C: The twisting pattern
What is the safety factor for fiber rope?
A) 3 : 1 C) 7 : 1
B) 5 : 1 D) 10 : 1
B: 5:1
What type of chain hoist would be used where the possibility of oil contamination
to the load brake is possible?
A) Spur geared chain hoist C) Screw geared chain hoist
B) Wire rope winch D) Gin pole derrick
C: Screw Geared Chain Hoist
This piece of rigging hardware is designed to allow a rope to be slipped over the
sheave without having to thread it.
A) Come-along C) Snubber
B) Thimble D) Snatch block
D: Snatch Block
Which type of sling has the greatest lifting capacity?
A) Basket hitch C) Single leg vertical sling
B) Choker sling D) Clove hitch
A: Basket Hitch
Which type of sling is more suitable for lifting rough or sharp-edge material?
A) Heavy duty wire rope sling C) Carbon chain sling
B) Roller chain sling D) Alloy steel chain sling
D: Alloy steel chain
What is a good type of sling to use on a load requiring good gripping action, such
as a load of pipe?
A) Basket hitch C) Bridle sling
B) Choker sling D) Grommet sling
B: Choker sling
If a hook straightens out from an overload situation, you should:
A) Bend it back into shape C) Destroy the hook
B) Tag it for use on light loads only D) Weld on a new point
C: Destroy the hook
Which of the following synthetic fiber ropes is the strongest?
A) Nylon C) Polyethylene
B) Orlon D) Esterlon
A: Nylon
Which of the following conditions make polypropylene rope stronger, but nylon
rope weaker?
A) Knots C) Bending
B) Moisture D) Mildew
B: moisture
A temporary fastening of a rope to a ring, pole, or hook is called a:
A) Knot C) Reef
B) Bend D) Hitch
D: Hitch
Which of the following is a type of core used in the construction of wire rope?
A) Fiber C) Independent wire rope
B) Wire rope D) All of the above
D: All of the above
Incorrect unwinding of the wire rope from a coil or rope drum can cause?
A) Kinking C) Rust formation
B) Corrosion D) Fleeting
A: Kinking
If you use a u-bolt clip properly, it will provide what percentage of the original
rope strength?
A) 20% C) 80%
B) 40% D) 100%
C: 80%
Which of the following types of loads is best suited for a gin pole derrick?
A) Many light loads C) A few heavy loads
B) Many heavy loads D) All of the above
A: Many light loads
You will find the breast derrick used most often in which of the following types of
jobs?
A) Unloading ships C) Lifting pallet loads
B) Hoisting roofing materials D) Loading boxcars
B: Hoisting roofing materials
The main support for a jib crane is a:
A) Vertical crossbar C) Vertical mast
B) Horizontal mast D) Parallel guy
C: Vertical Mast
The simplest and least expensive type of chain hoist is the:
A) Screw-geared hoist C) Spur gear hoist
B) Differential hoist D) Come-along
B: Differential Hoist
The most efficient and most expensive type of chain hoist is the:
A) Screw-geared hoist C) Spur gear hoist
B) Differential hoist D) Come-along
C: Spur gear hoist
On a single portable ladder, the foot should be 1’(one) from the vertical position
for every:
A) 1 ft. of working height C) 4 ft. of working height
B) 2 ft. of working height D) 8 ft. of working height
C: 4 feet of working height
When working above the floor or ground, What is the recommended height for
wearing a safety harness?
A) 3 M of working height C) 9 M of working height
B) 6 M of working height D) 12 M of working height
A: 3 M of working height
When you must leave a ladder standing for a long period of time you should:
A) Tag the ladder C) Anchor the bottom
B) Anchor the top D) Anchor both top & bottom
D: Anchor both top and bottom
What is the preferred sling leg angle in most lifting operations?
A) 25 deg. C) 45 deg.
B) 30 deg. D) 60 deg.
D: 60 degrees
At what temperature should wire rope sling having a fiber core not be used?
A) 100 Degrees F. C) 212 Degrees F.
B) 150 Degrees F. D) 225 Degrees F.
C: 212 Degrees F
Which of the following natural fibers makes the strongest rope?
A) Manila C) Jute
B) Sissal D) Hemp
A: Manilla
Should carbon steel chain be used for rigging?
A) Sometimes C) Never
B) Always D) Only when its not overhead
C: Never
How is the (SWL) safe working load of a sling determined?
A) Safety factor divided by the breaking strength
B) Breaking strength divided by the safety factor
C) Tensile strength divided by the breaking strength
D) Number of sling legs multiplied by the weight of the load
B: Breaking strength divided by the safety factor
When two or more sling eyes are placed in a lifting hook, it is preferable to use:
A) A turnbuckle C) An eyebolt
B) A shackle D) A thimble
B: Shackle
While performing a lifting operation the hoisting hook must always be:
A) Below the load’s center of gravity
B) Above and in line with the load’s center of gravity
C) In the center of the load
D) Over the heavy end of the load
B: Above and inline with the loads center of gravity
A fiber rope connected to a suspended load to prevent it from turning and
swinging out of control is called:
A) A snub line C) A mouse line
B) A tag line D) A control line
B: A tag line
What does the designation IWRC represent?
A) Independently wound rope core
B) Improved wire rope core
C) Independent wire rope core
D) Independent wire rope construction
C: Independent Rope Core
A two-legged bridle hitch supports a load of 8,000 lbs. The sling legs are 14 feet
and the height from the load to the hook is 11 feet. What is the load tension on a
single sling leg?
A) 3,143 lbs. C) 4,800 lbs.
B) 5,090 lbs. D) 5,920 lbs
8000/2x14/11
4000x1.273
=
B: 5090lbs
Shoulder type eyebolts should only be used with an angular pull greater than:
A) 25 degrees C) 40 degrees
B) 30 degrees D) 45 degrees
D: 45 Degrees
What effect does a knot in a rope have on its strength?
A) Increases the rope strength by 25 percent
B) Increases the rope strength by 50 percent
C) Decreases the rope strength by 50 percent
D) Decreases the rope strength by 25 percent
C: Decreases the rope strength by 50 percent
What type of material is best suited for a ladder working near electricity or
overhead power lines?
A) Aluminum C) Wood
B) Reinforced plastic D) Fiberglass
D: Fiberglass
What is the highest safe standing level on a step ladder?
A) Top step C) Second step from the top
B) First step from the top D) Third step from the top
C: Second from the top
The trolley on an electric overhead traveling crane is supported by and runs
along:
A) The columns C) With the hoist
B) The trucks D) The bridge
D: The Bridge
What type of rigging hardware eliminates the hazard of the load tipping, sliding
or bending as well as the possibility of low sling angles and the tendency of the
slings to crush the load?
A) Snatch blocks C) Turnbuckles
B) Spreader beams D) Equalizer beams
B: Spreader beams
What type of rigging hardware is used to keep equal loads on dual hoist lines
when making tandem lifts?
A) Spreader beams C) Turnbuckles
B) Equalizer beams D) tandem beams
B: Equalizer beam
How many cable clips (Crosby clips) should be used to make an eye using ¾”
wire rope?
A) Two C) Four
B) Three D) Five
C: 4
Number of clips = Rope Diameter X 3 +1 Rounded to the next whole number
.75 X 3 + 1 = 3.25 (4)
What type of knot is tied between an overhead support on a scaffold hitch?
A) Reef knot C) Clove hitch
B) Bowline D) Sheet bend
B; bowline
If a rope loses 18% of it’s original strength when spliced, which equals 3,100 lbs.
What is the strength of the original unspliced rope?
A) 15,555 lbs. C) 25,880 lbs.
B) 17,222 lbs. D) 70,000 lbs.
B: 17, 222lbs
3100 X 100 / 18 = 17,222lbs
C: Bowline on a bite
B: Clove Hitch
C: Lower
A: Raise load slowly
A: Stop
B: 577 lb
C: 707 lbs
C: 2500
4 ropes coming off travelling block equals 4:1 ration
10000lbs / 4 = 2500
You are pouring a concrete slab for a machine foundation, the dimensions for the
slab are 25 feet long by 20 feet wide and 6 inches thick. How many cubic yards of
concrete would you order?
A) 9.25 cubic yards C) 111.1 cubic yards
B) 27.7 cubic yards D) 132.4 cubic yards
A: 9.25 Cubic Yards
25 X 20 x .5 = 250 cubic feet
27 Cubic feet in one cubic Yard
250 / 27 = 9.25 Cubic Yards
A fiber rope looses 15% of its strength when spliced. A 1” manila rope has a SWL
of 1,280 lbs. What is the SWL for the new spliced rope?
A) 988 lbs. C) 853 lbs.
B) 1088 lbs. D) 1,200 lbs.
B: 1088 LBS
15 x 1280 / 100 = 192
1280 - 192 = 1088
C: 6000 pounds
Just calculate volume of the one large cylinder and get close. It will error on the safe side.
3.142xR2xheight
3.142x1x1x5.5 = 17.281x 500 = 8640
