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Scaffolding > Part 1 > Flashcards

Part 1 Flashcards

1
Q

What is the current safety guidance for preventing falls in scaffolding?

A

SG4:15

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2
Q

What is the current technical guidance for tube and fitting scaffolds?

A

TG20:13

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3
Q

What is the height for the main guardrail from the boarded platform?

A

950mm

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4
Q

What is the maximum distance permitted between guardrails, and the guardrail and toe board?

A

470mm

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5
Q

Who is responsible for safety at the workplace?

A

Everyone

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6
Q

What does the Working At Height Regulations 2005 hierarchy of controls state should be considered first?

A

Avoid (Working at height)

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7
Q

What colours are hazard/warning signs on site?

A

Black + Yellow

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8
Q

Which document will state the safe way to work on a scaffold contract?

A

Method Statement

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9
Q

What colours are mandatory warning signs on site?

A

Blue + White

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10
Q

Which document must you have when erecting a prefabricated (aluminium) mobile tower?

A

Instruction Manual

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11
Q

What is the minimum length of a sole board supporting a single standard?

A

450mm

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12
Q

How many lifts can you erect TG20 Compliant independent scaffold when using treader plates?

A

3 Lifts

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13
Q

An engineer should be consulted to check the adequacy of sloping foundations if a gradient exceeds?

A

1:10

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14
Q

As a guideline excavations should not be made within what distance of the scaffold foundations?

A

1m

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15
Q

What should be the first option when planning safe access to scaffolds?

A

Staircase or existing structures

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16
Q

Is it acceptable to secure a ladder with putlog couplers?

A

No, ladder clamps or rope lashing must be used

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17
Q

What is the recommended thickness of rope used when lashing a ladder?

A

6mm

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18
Q

What is the ideal ratio for the angle of a ladder?

A

4:1

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19
Q

How many points of contact must you have when climbing a ladder?

A

3

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20
Q

What is the minimum width for a ladder opening in a boarded platform?

A

450mm

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21
Q

What is the minimum height that a ladder should extend above the lift?

A

1m

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22
Q

When should scaffold tubes, boards and fittings be inspected?

A

Before use

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23
Q

What is the safe working load of a class ‘A’ right angel coupler?

A

6.1kN

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24
Q

What are the minimum dimensions of a base plate?

A

150mm x 150mm x 5mm

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25
Q

What is the safe working load of a class ‘B’ right angel coupler?

A

9.1kN

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26
Q

What is the recommended minimum distance that transoms should project beyond the coupler?

A

25mm

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27
Q

What is the safe working load of a joint pin/spigot?

A

0kN

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28
Q

A putlog adaptor should have a shear strength of?

A

1.12kN

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29
Q

What is the safe working load of a class ‘B’ sleeve coupler?

A

5.5kN

30
Q

What is the maximum projection of a gin wheel tube past the outer support?

A

750mm

31
Q

What is the maximum weight that should be lifted on a gin wheel?

A

50kg

32
Q

Which knot should be used when lifting scaffold boards by rope?

A

Timber Hitch

33
Q

Which knot should be used when lifting scaffold tubes by rope?

A

Rolling Hitch

34
Q

What is the maximum bay length for a general purpose independent scaffold?

A

2m

35
Q

What is the recommended height that the foot tie ledger should be installed on a putlog scaffold?

A

150mm

36
Q

What is the maximum recommend transom spacing on a class 3 independent scaffold?

A

1.2m

37
Q

What is the maximum transom spacing for heavy duty scaffold?

A

0.9m

38
Q

What is the maximum a board may project past the last transom?

A

150mm

39
Q

What is the maximum width of the perimeter lifts on a birdcage scaffold?

A

5 boards

40
Q

What is the recommended maximum height for a putlog scaffold?

A

6m

41
Q

What is the maximum distance between standards for a birdcage scaffold?

A

2.1m

42
Q

What is the minimum a board may project past the last transom?

A

50mm

43
Q

What is the maximum transom spacing for a class 2 birdcage scaffold?

A

0.9m

44
Q

What is the maximum first lift height of a birdcage scaffold?

A

2.5m

45
Q

What is the maximum height a tube and fitting staircase can be erected without design?

A

1.5m

46
Q

What is the maximum bay length for a heavy duty independent scaffold?

A

1.8m

47
Q

What would be the maximum height of a freestanding internal tower with base dimensions of 2.1m x 2.0m?

A

8m

48
Q

What is the maximum base dimension of freestanding class 3 tower scaffold?

A

1.8m x 1.8m

49
Q

What is the maximum loading on a general purpose scaffold?

A

2.0kN

50
Q

What is the maximum loading on inside boards?

A

0.75kN

51
Q

What is the maximum loading on a heavy duty scaffold?

A

3.0kN

52
Q

What is the maximum loading on a lift shaft tower?

A

0.75kN

53
Q

What is the maximum loading on a class 3 putlog scaffold?

A

2.0kN

54
Q

What is the maximum loading on a class 3 birdcage scaffold?

A

2.0kN

55
Q

What is the maximum loading on a class 2 freestanding tower?

A

1.5kN

56
Q

How often should sway bracing be repeated on each elevation of an independent scaffold?

A

Every 6th bay

57
Q

Where should plan braces be fitted on a freestanding tower scaffold?

A

Every other lift + under working platform

58
Q

What is the recommended angle of a sway brace?

A

45° (35° - 55°)

59
Q

How often should ledger bracing be fitted on a basic independent scaffold?

A

Every other set of standards + each end

60
Q

What is the maximum that braces may be fixed from the node point on independent scaffolds?

A

300mm

61
Q

What is the maximum that braces may be fixed from the node point on a freestanding tower scaffold?

A

100mm

62
Q

What is the tie duty of a raker?

A

2.7kN

63
Q

What is the general rule for the positioning of ties on basic scaffolds?

A

16m2 (4m each way)

64
Q

What is the duty of a reveal tie?

A

3.5kN

65
Q

What is the maximum height for the first line of ties on a TG20 pavement scaffold?

A

4m

66
Q

What is the only tube and fitting tie that can be classed as heavy duty?

A

Box ties

67
Q

Which type of fittings should not be used on ties?

A

Putlog coupler

68
Q

What percentage of reveal ties are allowed on an independent scaffold?

A

50%

69
Q

What is the maximum distance a tie tube can be positioned from the node point?

A

300mm

70
Q

Which masonry anchors is not suitable for fixing into brickwork?

A

Drop in anchor

Scaffolding (3 decks)

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