LINE E2 Flashcards
Wire rope, should be stored and how to be taken care of?
Stored in a dry location off the ground, lubricated with oil regularly to prevent corrosion
?
Rasie or lower load
When would you use a bridle hitch for lifting?
Two or three legs are used together to form a bridal hitch is generally used on Lowe’s that have suitable attachment points to keep the load stable
What are two purposes of a choker hook sleeves?
Spreads tension, wide hooks, in order not to damage the sling.
It helps to hold the material from sliding except at the top unless double wrapped
When loaded to the breaking point nylon rope will stretch up to?
40% of its original length
What is a Twisted rope good for?
A Twisted synthetic rope is preferred for the lifelines because it will stretch somewhat to cushion the fall of a worker.
What sling type should be used to live 25 pieces of 25 ft long steel pipes?
Double-wrapped, double choker, double basket hitch
I’m pulling device that can either use a chain or cable is up
Come along
What must be done if a load is being lifted and accidentally comes in contact with the boom of a crane?
Inspect the crane
To remove from a shipping coil you should?
Pull it from the inside of the coil
The angle between the sling lag and vertical at up to 30° or reduced the working load limit by what percent
90%
How strong is polypropylene? Rope
It’s 60% as strong as nylon and his people observing 40% of the shock.
With wire rope what is the definition of Peening?
When wire rope strikes against a structural part of the machine or beats against a roller or itself the wire and strands are flattened and distorted and become brittle. This continuous pounding is called peening. Often this can be avoided by replacing protectors between the rope and object it is striking
What is a boom truck
A truck with a boom type crane for off loading materials
Sisal rope what are some of the characteristics?
Sisal rope is white, course textured and rough to touch. It’s weaker than manila rope and should only be used were cost is a factor and not strength
On a high voltage line of over 250,000 volts how far back should you stay back?
Minimum of 6 m, 20 ft
You if you overload Tirfor, come along Jack and once the shear pin breaks what happens
All movement will stop
When are spacer bars used?
Long loads such as gang forms, tilt ups, preventing tipping and stressing,
May natural fiber rope be used for hoisting with the powered hoist?
No
In what situation is it okay for a worker to ride the load
Never
Is it okay to replace a lost pin in a shackle with a high strength bolt?
No
When lifting with a sling, you must make sure that the sling is long enough so that the angle formed by the Sling from the horizontal is always greater than what?
60 degree
To join two ropes of the same diameter you should use a?
Reef knot
What is a bowline ?
a non-slip loop at the end of the rope
What’s the benefit of using taglines to control loads?
It allows you to do it from a safe distance
Padding should be applied to all Lowe’s that have?
Sharp corners
What kind of knot would you use to secure a rope to a plank, timber, post or pipe?
timber hitch
What is the advantage of a telehander compared to a standard type forklift.
At telehander has a higher lift and greater reach
Where should slings attach the load in relation to the center of the gravity?
Equal distance to or above the point of balance
Working load of an eye bolt?
Vertical pull no reduction in the working load limit.
15° vertical off the relational plane of the eye bolt will cause a 45% reduction.
30° from the vertical pull will cause a 65% reduction
45° will cause a reduction of 75% in working load limit
Access a 45° not recommended
What is the minimum safety factor to support workers?
10
Describe polyester rope?
Polyester rope is similar to nylon in the period but is not elastic, will only stretch 5% before breaking.
Polyester rope is as 87% strong as nylon and contain only 60% of nylon shock load.
Polyester does not lose any strength when wet unlike nylon it is unaffected by acids. However you should wash polyester ropes and slings with cold water whenever they’re exposed to any chemical
What is the maximum load that you can take a rope to?
1/9 of the ropes breaking strength
What type of knot would you tie it when tying down a load?
Trucker’s know
What type of rope is suitable for tagline
Polypropylene
How long should a tagline be?
Long enough to be safe
When rigging loose bundles around stock you should use? What type of rigging?
Double-wrapped basket hitches
What is a reef knot utilized for it?
Also known as a square knot.
He used to fasten two ropes of equal diameter together
A voltage line between 75000, 250,000. How far should you stay back from the high voltage line?
4.5 m, 15 ft
When several ropes are to be attached in a single hoop make a connection to the hook using up?
Shackle
Correctly installed wire rope clips will reduce the braking strength by what percent?
20%
The angle between the sling leg and vertical will reduce the working load limit , an angle over 30° up to 45°I will reduce the working load limit by how much percent
70%
If you use a cross sticks to stabilize a power you must place a cross sticks directly over
Existing cross sticks
What is the term standing part mean, when it comes to ropes
It’s the long part of the rope, the end of a rope is called end
For overhead lifting what type rope you should use
I single piece of rope
If cost is the factor what kind of rope do you use and strength is not important?
Sisal
What is a thimble?
It protects and softens the bend. It’s a piece of metal that goes inside of a rope to prevent it from damaging it it’s like an eyelet
The portion of the rope which forms the loop is called?
Bright
How long can a suspended load be left on a hook while the operator is not at the controls?
Never
What should be done if a wire rope sling that has a kink in it?
Remove from service and tag
An apparatus capable of lung continuous lifts is a
Tifor jack
Tifor Jack’s can be made to travel in opposite directions by
Relocating the pipe handle to the other lever
USE MAIN HOIST: Tap fist …
What must be done when a broken wire in a wire rope sling?
Work broken wire back and forth until it breaks.
With wire rope what is the definition of Peening?
When wire rope strikes against a structural part of the machine or beats against a roller or itself the wire and strands are flattened and distorted and become brittle. This continuous pounding is called peening. Often this can be avoided by replacing protectors between the rope and object it is striking
When using a crane or hoist to roll or turn heavy structural shapes you should avoid?
Violent movements
Double-wrapped basket hitch is great for what?
Completely wrapping around the load to prevent it from sliding compresses all the material together
What is the best method for lifting beams?
Utilizing an equalizer beam
Where should a tagline be attached to a long load?
At the end using a bowline
Which synthetic rope will float on water?
Polypropylene
retract boom
A tirfor jack is a hoisting device which uses a question mark
A wire rope designed for it
Which type of wrote not is used to tie a rope to fix objects such as a pole.
Clove hitch
Bowline
non-slip loop at the end of the rope
Ropes are best stored in what kind of location
well ventilated area
Polypropylene rope softens because of
As the temperature increases the rope softens and loses 40%of
What type of knot would you use to secure a rope to fix objects such as a post?
A clove hitch
The u-bolt part of a cable clip must be installed so it bears on?
The dead end of the road
What is a mobile crane?
drivable crane
What is the minimum clearance required when working around 100,000 power line
4 .5m / 15 ft
What is Manila rope?
Light yellow in color and has a smooth waxy surface, and is only 37% as strong as nylon.
What must be done to wire rope has been subjected to bird caging?
Remove rope from service or remove damaged section.
Which not forms a non-slip loop?
Bowline
When a crane starts to pick up the slack around the load what should you avoid?
Getting your fingers pinched
What is the center of gravity?
point of balance
What type of rope not is used to stop a sleeve or pulley from slipping through a knot?
Figure eight knot
Cable clip should be placed how far from the end of the wire cable
Usually six or seven rope diameters from the Yen to the first cable should also be 6 or 7 rope diameters
Which is stronger nylon or polyester rope?
Nylon is approximately two and a half times stronger than manila.
Polyester is 87% strong is nylon, polyester is non-elastic as nylon and is capable of sustaining only 60% of nylon chocolat
What is Gratry crane,
overhead frame structure that runs on a trolley on rails or wheels
The angle between the sling line and vertical over 45° up to 60°, will reduce the working load limit by what percent?
50% and anything over 60° is not permitted unless part of an engineered lift
OWER THE BOOM AND RAISE LOAD
Using a slip hook, if the load is 3/4 off center on the slip hook how much can the carry capacity be rated
70% of the load can be carried based off the capacity if it’s 3/4 inches off center.
A balanced slip hook can hold 100% if it’s rated load if it’s more than 3/4 off it can only carry approximately 40%
If it’s a quarter inch off it can hold 8 86% of its rated load.
What kind of synthetic fiber rope conducts electricity when it’s wet?
Nylon
The knot which multiplies the tension you apply to the rope is a?
Truckers knot
What should be done if there’s a possibility of shock loading when using a wire rope sling?
Used oversized rope s
Describe nylon rope?
Nylon rope is usually pure white, soft and smooth to touch it has an elastic quality will stretch up to 40% of its length. Nylon rope loses about 10% of the strength when wet, but it rains its original strength when dry, nylon does not rot is unaffected by milldale and can withstand temperatures up to 150 c. Without being damaged acids adversely affects it
What type of gloves are not considered safe for handling materials?
Gauntlet type gloves
Is it safe to repair a slight tear in a synthetic web sling?
No
To protect chains from twists while under loads all hoisting change should be equipped with what?
Swivel, swivelers
When working around a power line at 200,000 volts what’s the safe clearance
4.5 m, 15 ft
Voltages between 75,000 to 250,000
Greater than 250, 000 require six meter 20 ft
The screw threads at each end of a turnbuckle sleeve must be?
Left handed at one end and right hand at the other end
What are the three main parts of a tower crane
Mass, jib and counter jib
Why must a rope never be placed on the shackle pin in a lifting situation?
The rope could cause the pain to unscrew from the shackle.
I’m high voltages how far should you stay back if the line is 750 to 75,000 volts?
3 m, 10 ft
A single basket hitch is used when?
When a sling is able to pass through the material and the load can be hold at both ends.
Sharp bends and knots reduce the strength of a rope up to what percent?
Up to 50%
What is a sheet Bend, when it comes to tying with ropes
Is used to attach two ropes of unequal diameter
Can you use an open hook to lift a basket, cage or a skip?
You cannot use open hooks when hoisting as it can slip out.
When moving a suspended load without a tagline what should you do?
Guide and follow the load
What should be done with faulty equipment?
Remove from service, tagged, destroyed if not repairable
Double basket hitch is great for?
Good for lifting a singular object but the sling has to be placed at least 60° to hold the item otherwise it could just slip and fall out
What type of rope is best for insulating electricity properties?
Polypropylene
What is the purpose of whipping a rope
It keeps the ends from fraying
Bowline
non-slip loop at the end of the rope
Whats a Bridle hitch?
The maximum load imposed on a robe should never exceed what breaking strength?
1/9 of its breaking strength
List some things that are unsafe when working with string lines, hoist lines
Never wrap or choke the load with a hoisting line.
Never spend one load from another load.
Never lived a load with a point of a hook
Never live loads with one leg of a multi leg sling until the unused legs are made secure.
Never leave the load suspended in the air when the hoist are crane is unattended. Never ride the load that’s being lifted
Rollers are used in relation to a load
To move a load sideways
It’s critical to not use shoulderless eye bolts how come when lifting?
They will sheer off. Shoulder bolts designed to withstand pulls at 45°. There can be no space between the eye bolt shoulder and the work being lifted.
The knot w if you had to join a large diameter rope to a smaller diameter rope you should use what type style of knot
Sheet band
When wire wrote brakes how should you break off the strand?
You should bend it back and forth till it breaks off otherwise if you cut it it will leave a sharp edge and cause further damage to the line
When attaching a line to a load to use it as a tagline what type of knot should you use?
Bowline
What is a turnbuckle used for?
It’s used to adjust the length of the string so the load can be leveled
How should loose materials be stored?
Blocks, and banded together
The number of cable clips required for a connection depends on the?
Diameter of rope
Where are fatigue fractures often found?
Often near wire ropes at the fittings
Manila rope is
Rope is light yellow in color and has a smooth waxy surface. And is only 37% strong as nylon
