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millwright > Hoisting and rigging > Flashcards

Hoisting and rigging Flashcards

1
Q

what the maximum wear for a chain under 1 inch? over 1 inch?

A

5%/ 10%

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2
Q

A socket commonly used with cable to secure elevators cable name is ?

A

Drop forged socket

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3
Q

Wedge sockes are commonly used as a cable attachment on mobile cranes?

A

True

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4
Q

compressing a steal sleeve over a rope to form a connecting point is called a?

A

Swedge pocket

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5
Q

in order to retain a wire rope shape, a millwright will use to retain the shape?

A

thimble

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6
Q

Never saddle a dead horse?

A

True always saddle the live end never the dead end

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7
Q

Closing the opening of a hook with mechanical wire is known as?

A

mousing

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8
Q

Three basic types of shackles available?

A

Screw pin, round pin, and safety tight

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9
Q

The working load for slings is calculated for?

A

a single verticle hitch

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10
Q

In order to equalize the load on long slings in a big lift?

A

Equalizer beam is used

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11
Q

Single length of sling hooked back on its self is called a?

A

Single Choker

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12
Q

When lifting loads when sensitive to scratching or marring?

A

Synthetic web sling

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13
Q

A rule of thumb for calculating a sling with a 3/8 wire rope will support ?

A

1 ton

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14
Q

a block that can be opened on one side and permit the rope to be slid over onto the shiv is called a ?

A

snatch block

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15
Q

All chain hoists are designed with the hook as their weakest part?

A

True

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16
Q

It is ok to inter change the hooks on a chain hoist?

A

False

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17
Q

complete list of hand signals is listed in appendix D of the wcb regulations?

A

True

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18
Q

Most rigging assecories are produced by?

A

forging

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19
Q

the reason a hoisting rope the upper block should lead from the center of the shiv is?

A

to keep the block from tipping

20
Q

two arms out is stop signal

A
21
Q

what fist over head?

A

main hoist up

22
Q

how is chain size determined

A

thickness diameter of the link

23
Q

What does “A” mean on a chain?

A

lifting chain

24
Q

turn buckles when used for rigging and hoisting?

A

should be tied with tie wire

25
Q

premature wire rope on a crane with be caused by?

A

excessive fleet angle

26
Q

disadvantages of this rope can not be used with swivels or the ends on fastened?

A

lang lay

27
Q

when the crane operator and signal man can not see eachother?

A

use two way radios

28
Q

when slinging a bundle of pipe or tubing which of the following with provide best contact of the load?

A

double wrapped choker

29
Q

what happens to rigging hardware when shock loading occurs?

A

increased load stress

30
Q

correctly installed u bolt type of clips are installed on what portion?

A

saddle end goes on live end and u bolt side goes on dead end

31
Q

in the construction of wire rope the small diameter wire is wrapped around the wire to create a ?

A

Strand

32
Q

more wires in a strand the more?

A

flexible a rope will be

33
Q

the breaking strength of a rope is?

A

the force needed to break the rope

34
Q

the letters FC in a sling code refer to?

A

the core of the rope

35
Q

wire rope which the strands and the wires are twisted in the same direction?

A

lang lay

36
Q

6x31 morigtion seal iwrc right regular lay

A

6 strands of 31 wires in a strand

37
Q

the IWRC stand for

A

independant wire rope core

38
Q

properly measure the diameter of a rope?

A

from the widest point

39
Q

any damaged or kinked sections should be?

A

discarded

40
Q

Wire rope should be lubricated according to?

A

Manufactured spec

41
Q

fibre ropes are divided into two groups

A

synthetic and natural

42
Q

poletherin rope is a natural fibre rope?

A

false

43
Q

When two three or more sling legs are used is called?

A

Bridle hitch

44
Q

A proper fitting shiv groove should support the rope fit the circumference is?

A

135-150

45
Q

fibers rope are divided into two groups

A

synthetic and natural

46
Q
A

millwright (7 decks)

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