Climbing, Lifting, Rigging and Hoisting Flashcards Preview

Electrical Theory Period 1 SAIT-Alberta > Climbing, Lifting, Rigging and Hoisting > Flashcards

Flashcards in Climbing, Lifting, Rigging and Hoisting Deck (37)
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1

When must one equip a full body harness?

  • When working at heights greater than 3 meters and not protected by a guardrail
  • When working at heights less than three meters but there is an unusual possibility of injury
    • Like working above moving water or operating machinery

2

Who must ensure that all components of your fall protection system are compatible?

Your employer

3

When must fall protection equipment be taken out of service?

When it has:

  • Become defective
  • Come into contact with excessive heat or a substance that may cause it to fail
  • Stopped a fall.

4

Where should the back d-ring on a full body harness sit on one's body?

Between their shoulder blades

5

When are step ladders often utilized?

For applications at low or medium heights

6

What is the safe ratio of length to height of an extension ladder?

How far beyond the working destination must an extension ladder extend?

1:4

1 metre

7

What materials may ladders be made of?

  • Fiberglass
  • Aluminum
  • Reinforced plastic
  • Wood

8

What is used to provide a secure footing for scaffolding?

Mud Sills

9

What are toe boards?

A vertical barrier at floor level which prevents objects (tools and material) from falling onto workers below

10

Could the height of a free-standing or rolling scaffold be more than three times the smallest dimension of its base?

No

11

What should the material used in wood scaffolding be?

Sound, close grained, solid-4-sides wood

12

What is the first thing to consider when lifting a load?

The weight of the load

13

What kind of tires do indoor forklifts have?

Solid tires

14

What is a chain hoist used for?

Vertical lifts of light loads

15

How should one manually lift an object?

With a straight back, bent knees and lifting with their legs.

It is generally a good idea to keep the object being lifted close to one's abdomen

16

Is a lifting technique proper, when one's back is parallel to the ground?

No, this could result in injury of the lower back

17

Which Hardware components are used to fasten loads to hoisting equipment?

Slings

18

Must a thimble be inserted into the eye of a wire rope sling?

No, it is only highly recommended

19

What is shock loading?

When a material is hoisted suddenly, and a larger than normal force is applied to the rigging equipment.

20

What are the safety factors respectively, for:

  • General rigging and hoisting
  • Lifting and transporting workers
  • Public elevators?

  • 5: 1
  • 10: 1
  • 20: 1,

21

When must a synthetic fiber web sling be discarded and destroyed?

When the red core is exposed

22

If the material used to manufacture a chain sling is not identifiable, may it be used to hoist?

No.

23

If a chain sling shows signs of stretching must it be discarded?

Yes

24

What is the effect of sling angle on a load?

A lower angle applies a larger tension force on the sling

25

What is the recommended minimum safe lifting angle for sling rigging operations?

60°

26

When hosting, the hook should be positioned over the load's...?

Center of gravity

27

In regards to rigging, what is a block?

A device which provides a mechanical advantage and changes the direction of the pulling or lifting Force.

28

When estimating the sling load for a four leg bridle hitch, what is recommended?

To calculate the load for a two-leg bridal hitch, since the other two legs likely only balance the load.

29

Does raising a crane boom also raise the load?

What is the intended effect of raising a crane boom?

Yes it does

The intended effect is to bring the load closer to the crane

30

What happens to a load if a telescoping boom is shortened?

The load is lowered