問題一覧
1
What is the recommended interval between sway braces
Every 6 bays
2
What’s is the safe working load of a right angle coupler
6.1
3
What is the safe working load of a class “a” swivel
6.1kn
4
In addition to inspection after bad weather how often must the scaffolding be inspected to comply with regs
every 7 days
5
When should fittings be inspected
before use
6
How should ring type gin wheels be secured
load bearing coupler on each side of ring
7
The recommended point of suspension of a gyn wheel should not project beyond the outer support by more than?
750mm
8
When should guardrails and toe boards be fixed to the working platform
any height where a person / or materials can fall a distance liable to cause personal injury
9
What’s is the maximum recommended standard spacing on a heavy duty independent, TG 20 compliant scaffolding
1.8m
10
Which of the following hitches should be used for hoisting or lowering scaffolding boards?
timber hitch
11
Which knot or hitch should be used to hoist or lower scaffold tubes
Rolling hitch
12
The maximum Distance between ties on a TG, 20 compliant. Independent scaffolding is?
4 m vertically, every other standard horizontally and at ends of the scaffold
13
What is the maximum overhang of a 38 mm thick scaffolding board beyond its last support
150
14
What is the minimum overhang of a scaffold board beyond it last support
50mm
15
The maximum spacing of transoms supporting 38 mm thick scaffolding board beyond its last support is
1.2m
16
Scaffold tie should be fixed with?
right angle coupler
17
Joints in ledgers of tg20 independent and putog scaffolding may be made?
anywhere in the bay
18
When testing ties to NAsc recommendations, TG4, what percentages should be tested at a minimum
minimum of 3 and at least 5%
19
How many working platforms are allowed on a TG 20 compliant heavy-duty independent scaffold
one and one at 50%
20
The maximum load that may be hauled up on a gin wheel with an unsupported projection of 750 mm is?
50kg
21
What is the minimum width of a ladder access opening in a scaffold working platform?
450mm wide and 600mm length
22
What purpose does a sole board serve?
spreads the weight of the scaffold
23
What is the maximum Tie duty (in kn) of a standard duty class A tie according to TG, 20
6.1kn
24
What is the recommended angle for fixing sway bracing?
45 Degrees
25
A tg20 independent scaffold to a single elevation (no returns) Class 3 has 2m bays and erected with prefabricated transom units what is the recommended frequency of the ledger bracing?
Ledger bracing is not required
26
TG20 independent compliant scaffold can be erected with a maximum of 3 inside boards. What is the uniformly distributed load allowed on the inside boards
Access only 0.75knm 2
27
Joints in ledgers must be staggered unless
The joint in the guardrail is in a different bay
28
What’s is the ratio for an interior free standing tower
4x the smallest base dimension
29
A working platform is 4.0m high At what distance from the vertical should the base of the ladder be set to achieve the recommended slope
1m
30
The maximum base dimensions for a th20 compliant interior and exterior freestanding tower is
2.7m x 2.7m
31
What percentage of reveal ties may be used on a scaffold
50%
32
How often should ledger bracing be installed on an independent scaffold
alternate pairs of standard and on the ends of the scaffold
33
What is the maximum bay size of a class 3 (2kn/m2) tg20 compliant interior birdcage
1.7m x 1.7m
34
What’s the maximum height of a th20 compliant interior birdcage
10.5m
35
Tg20 provides scaffolders with?
a guide to good practice
36
Tg20 permits tube and fitting stairway up to 1.5m if you wish to go higher than that what would be required?
design
37
What is the ratio for a tg20 compliant exterior freestanding tower
3x smallest base dimension
38
How often at a minimum should gin wheels be inspected
Every 12 months
39
The safe working load of a putlog coupler is
0.63kn
40
What is the maximum recommended standard spacing on a heavy duty independent th20 compliant scaffold
1.8m
41
If the scaffold is not complete what action should be taken
Stop access to the scaffold and put scaffold incomplete sign-Do not use notice on it
42
What British standard should scaffold fittings be manufactured to
bs1139/en74
43
What’s is the safe working load of a class b sleeve
5.5kn
44
What is the minimum height of the upper guardrail
950mm
45
What is the minimum width of a working platform for personnel only on an independent scaffold
500mm
46
Where is the node point on a scaffold?
where a standard meets a ledger
47
The recommended diameter of rope used for a gin wheel is
18mm
48
The space between the guardrails and toe board must not exceed ?
470mm
49
What is the maximum bay length for a TG 20 compliant Putlog scaffold
2.0m
50
What is the maximum pavement lift height for TG20 complaint tied independent?
2.7m
51
What is the maximum tie duty in kn of a very light duty tie according to TG20?
2.7kn
52
What is the maximum tie duty (in kn) of a standard duty class “B” duty tie according to tg20
9.1kn
53
What’s is the uniformed distributed load allowed on the light duty independent scaffold
1.5knm2
54
What is the recommended number of boards between the wall and standards of a pot log scaffold?
3-5 boards width
55
What is the maximum recommended loading on a general-purpose putlog scaffold
2.0kn
56
What should the uniform distributed load be for stairways for access to a working scaffold
1kn
57
How often should plan bracing be fixed on a tg20 compliant interior and exterior freestanding tower
at alternate lifts including top lift
58
What is the maximum bay size of a tg20 interior birdcage scaffold
2.1m
59
What is the maximum first lift height allowed on a tg20 interior birdcage scaffold
2.5m
60
Bracing on a tg20 compliant exterior free standing tower should be installed within
100mm
61
What is the Swl of a gin wheel
250kg
62
What is the maximum transom spacing allowed on a heavy duty independent scaffold
900mm
63
The minimum base dimensions for a tg20 compliant interior and exterior freestanding tower?
1.2m x 1.2m
64
Which of the following knot is used to stop the rope going through the gin wheel
figure of 8
65
What is the maximum recommended standard spacing on a light duty independent scaffold?
2.4m
66
What’s is the maximum recommended lift height on an independent scaffold
2m
67
What’s is the recommended height of the second and subsequent lifts on a tg20 compliant interior birdcage scaffold
2m
68
What is the maximum uniformed distributed load allowed on a TG 20 compliant heavy duty independent scaffold?
3knm2