E-2 (answers) Flashcards
What is the minimum breaking strength required of a fibre rope used to lift a 400 kg workers?
4000 kg
The best knot to use to attach a tag line to the load is
Bowline
The centre of gravity of an object to be lifted is that point at which the object will ______ regardless of the objects position
Balance
The double basket hitch should be set so that the angle to the HORIZONTAL is never less than
60 degrees
The most suitable way to tie two ropes of different diameter together is with a:
Sheet bend
A correct method for determining a safe sling angle is
the sling length is longer than the horizontal distance between the attachment points
A knot in a fibre rope reduces the strength of the rope by
1/2
A pull that is 45 degrees from the vertical on a shouldered eye-bolt, reduces the safe working load by
75%
How many legs of a double basket hitch can be considered to be supporting the load?
4
How many legs of a four leg bridal hitch may be considered to be supporting the load
2
How many legs of a triple bridal hitch can be considered to be supporting the load
2
What is the nearest safe distance you are to maintain from even the lowest voltage
“high-tension” power line when rigging?
3.0 M
The safety factor for ropes used to support a worker is
10
The sling attachment points on a load should always lie _____ the centre of gravity on the load
Above
The spacing between cable clips is usually equal to approximately
6 rope diameters
The tag line should be
Made of non conducting material
Tirfor jacks can be made to travel in the opposite direction by:
Relocating the pipe handle to the other level
To avoid electrical shock, a tag line should be made of
Polypropylene rope
To make a secure attachment to a pipe that must be lifted on end using a rope you should tie a
Timber hitch
U bolt cable clips must be installed so their u bolts are on
The dead end of the rope
When forming a loop into the end of a wire rope what must be used
A thimble
What will happen if you exceed the lifting capacity of a wire rope winch (tirfor jack)
A shear pin within the winch will break
When slings are new what is the allowable percentage by which the SWL may be exceeded when lifting materials
0%
Which of the following fibre ropes is most resistant to shock loads
Nylon
