SECTION ONE: CERTIFICATION
1. a) At what height is a scaffolding certificate of
competency needed?
Where a person or
object could fall more than 4m from the scaffolding.
1. b) Is a person with a Basic Scaffolding Certificate
allowed to construct a cantilevered scaffold?
No
1. c) Is a person with a Basic Scaffolding Certificate
allowed to construct a barrow ramp?
No
1. d) Is a person with a Basic Scaffolding Certificate
allowed to construct a tower frame scaffold with outriggers?
Yes
1. e) Is a person with a Basic Scaffolding Certificate
allowed to construct a tube and coupler scaffold?
No
1. f) Is a person with a Basic Scaffolding Certificate
allowed to install a barrow hoist?
Yes
1. g) Is a person with a Basic Scaffolding Certificate
allowed to construct a modular birdcage scaffold?
Yes
1. h) Is a person with a Basic Scaffolding Certificate
allowed to construct a swing stage ?
No
1. i) Is a person with a Basic Scaffolding Certificate
allowed to install a safety net?
Yes
1. j) Is a person with a Basic Scaffolding Certificate
allowed to erect a mast climber?
No
1. k) Is a person with a Basic Scaffolding Certificate
allowed to construct a mobile frame scaffold?
Yes
1. l ) Is a person with a Basic Scaffolding Certificate
allowed to install a personnel and materials hoist?
No
SECTION TWO: SITE HAZARDS
2. a) How close to live unprotected powerlines would you
construct a metal scaffold?
4m (national guideline.
Consult local supply authority for state regulations)
2. b) How far past each end of the scaffold should
insulation on live powerlines extend?
4.9m (or 5m)
2. c) How can a scaffold built alongside a road be protected
from traffic damage?
1. Re-route traffic
2. Provide guards (or fenders)
3. Use a person to direct traffic (or flagman)
2. d) What could happen if the tie tubes on a scaffold stuck
out too far when a crane is operating?
Crane loads could snag the scaffold
2. e) Name something which might corrode scaffolding
equipment.
1. Acids
2. Alkalis
3. Salts
2. f) What is the danger where a scaffold is being
constructed close to machinery with moving parts?
Injury from machinery operation
2. g) What type of scaffolding material would you use to
construct a scaffold where there may be a danger of explosion?
SECTION THREE: TOOLS AND EQUIPMENT FOR SCAFFOLDING
3. a) How far above the maximum nut extension must the spindle of an adjustablebaseplate extend?
3. a) How far above the maximum nut extension must the spindle of an adjustable
150mm
3. b) What is the maximum extension on an adjustable
baseplate ?
600mm
3. c) What is the minimum size of a square baseplate ?
150mm x 150mm (or 225cm2)
3. d) What is the minimum outside diameter of a common
scaffold tube (to the nearest mm)?
48mm
3. e) What is the minimum wall thickness of a common steel
scaffold tube?
4mm
3. f) What is the minimum wall thickness of a common heavy
duty aluminium scaffold tube?
4.45mm (or 4.4mm or 4.5mm)
3. g) What is the minimum width of a scaffold plank?
220mm (or 225mm)
3. h) What is the minimum thickness of a hardwood solid
timber scaffold plank?
32mm
3. i) What is the minimum thickness of an oregon solid
timber scaffold plank?
38mm
3. j) What is the minimum diameter of fibre rope you would
use for a handline ?
12mm
3. k) What is the minimum diameter of fibre rope you would
use for a gin wheel?
16mm
3. l ) What is the maximum load you would lift with a gin
wheel?
50kg
3. m ) Would you use a gin wheel with no rope guides?
No
3. n ) How far along an unbraced cantilevered scaffold tube
would you fix a gin wheel?
600mm
3. o ) How would you stop a ring-type gin wheel from sliding
along the scaffold tube?
Fix a coupler on either side of the ring
3. p ) Would you suspend a gin wheel from a right angle
coupler?
No
3. q ) What would you do to make safe a hook-type gin wheel
with no safety catch?
Mouse the hook (wire up the open hook)
SECTION FOUR: GENERAL SCAFFOLD REQUIREMENTS
4. a) What is the maximum load in each bay of a light duty
working platform?
225kg (or 2.2kN )
4. b) What is the maximum load in each bay of a medium duty
working platform?
450kg (or 4.4kN )
4. c) What is the maximum load in each bay of a heavy duty
working platform?
675kg (or 6.6kN )
4. d) What maximum load would you place on a right angle
coupler?
630kg (or 630kgf or 6.25kN )
4. e) What maximum load would you place an adjustable
baseplate ?
3030kg (or 30kN, or 3030kgf. 3000kg or 3 t are acceptable
approximations)
4. f) What is the maximum allowable load on a chain?
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One sixth of the breaking load (or breaking strain or
breaking force)
4. g) What is the maximum allowable load on a flexible steel
wire rope?
One sixth of the breaking load (or breaking strain or
breaking force)
4. h) When a scaffold is built on soil, what would you place
under the baseplates to distribute the load?
4. i) What minimum width of timber would you use as a
soleplate ?
220mm (or 225mm, or the width of a scaffold plank)
4. j) Are gaps allowed between the planks of a working
platform?
No
4. k) Can platform planks be lapped on the returns of a
scaffold?
Yes
4. l ) What is the minimum width of a light duty working
platform?
450mm (or 2 planks)
4. m ) What is the minimum width of a medium duty working
platform?
900mm (or 4 planks)
4. n ) What is the minimum width of a heavy duty working
platform?
1000m (or 5 planks)
4. o ) What is the minimum width of clear access along a
working platform for persons with hand tools only?
450mm (or 2 planks)
4. p ) What is the minimum width of clear access along a
working platform for persons and materials?
675mm (or 3 planks)
4. q ) Can planks with different thicknesses be used to deck
out a working platform?
No
4. r ) When is edge protection needed on working
platforms?
When a person or object could fall more than 2m
4. s ) How far above the working platform must a toeboard
extend?
150mm
4. t ) At what height above the working platform would you
fix a guardrail ?
Not less than 900mm and not more than 1100mm (or any height
between these two)
4. u ) What must be provided between the guardrail and the
toeboard to complete a platform's edge protection?
A midrail
4. v) What is the maximum gap allowed between an unprotected
platform edge and the working face?
Less than 225mm (or 225mm or less than the width of a
scaffold plank)
4. w ) Is it acceptable to use a personnel hoist as the only
means of access to a scaffold's working platforms ?
No
4. x) What type of ladders cannot be used for access to a
scaffold?
1. A domestic grade (or non-industrial grade) ladder
2. An extension ladder
3. A step ladder
4. y ) What is the maximum height allowed between ladder
landings?
6m (or 3 lifts)
4. z ) What is the minimum height an access ladder must
extend above the landing?
900mm (or 1m)
SECTION FIVE: PARTICULAR SCAFFOLD REQUIREMENTS
5. a) Do castors for mobile scaffolds need wheel locks?
Yes
5. b) Can a castor for a mobile scaffold have a pneumatic
tyre ?
5. c) Why is plan bracing needed in a mobile scaffold?
To stop the scaffold from twisting (or distorting) when it
is moved
5. d) What is the minimum platform width when platform
brackets (hop ups) are fixed between lifts?
450mm (or 2 planks)
5. e) Would you fix platform brackets (hop ups) on the
inside of the scaffold or on the outside of the scaffold?
The inside (or alongside the working face)
5. f) When platform brackets (hop ups) are fixed between
lifts, where would you place the extra working platforms?
At the lift immediately above and the lift immediately below
(or one star above or one star below)
5. g) What maximum spacing would you use between tank
brackets supporting 50 mm thickness solid timber scaffold planks?
2m
5. h) What maximum spacing would you use between tank
brackets supporting 63 mm thickness solid timber scaffold planks?
2.5m
5. i) What would you do to stop the movement of planks on a
crane-lifted shutter bracket scaffold?
Positively fix (or lash , or strap, or spike) them
5. j) Should the design of a sheeted scaffold be checked by
an engineer?
Yes
5. k) Would you use hessian to sheet a scaffold?
No
5. l ) Does the supplier of prefabricated scaffolding need to
provide written information about the system?
Yes
5. m ) Would you mix components of two prefabricated systems
in the one scaffold without a supplier's or engineer's consent?
No
5. n ) What maximum horizontal tie spacing would you use on
an unsheeted modular scaffold?
3 bays (or 6 bays with plan bracing)
5. o ) What maximum vertical tie spacing would you use on an
unsheeted modular scaffold?
4m (or 2 lifts, or 8m with ledger bracing, or 4 lifts with
ledger bracing)
5. p ) If you used plan bracing to increase the tie spacings
on a prefabricated scaffold, how would you strengthen each tie?
Fix check couplers (or additional couplers) to the tie
tubes
5. q ) If a tie tube was fixed to a wedge-type modular
ledger, how would you fix the ledger against uplift?
Fix a check coupler (or additional coupler) over the wedge
on the standard
5. r ) Where would you fix the first lift on a modular
scaffold?
At the standards lowest connection points (or at the base of
the standards)
5. s ) How many unbraced panels would you allow between the
longitudinally braced panels of an unsheeted modular scaffold?
3
5. t ) Where would you fix transverse braces to a run of
unsheeted modular scaffold?
At each end (or in each lift at each end)
5. u ) How high would you build an unsheeted free-standing
steel frame scaffold?
Three times the least base width
5. v) Without supplier's information or engineer's approval,
how high would you build a light duty aluminium tower frame scaffold?
9m
5. w ) Would you fix the ladder access to a tower frame
scaffold internally or externally?
Internally (or within the framework)
5. x) How is the ladder opening in a tower frame scaffold's
working platform usually protected?
With a trapdoor (or hinged hatch)
5. y ) Without supplier's information or engineer's approval,
how many working platforms would you place on a light duty aluminium tower
frame scaffold?
One
SECTION SIX: ASSOCIATED EQUIPMENT REQUIREMENTS
6. a) What is the maximum mesh size of a safety net?
100mm
6. b) What maximum gap would you allow between the edge of a
safety net and the building or structure?
200mm
6. c) What are the two maximum fall distances which you
might find marked on the label of a safety net?
1m and 6m
6. d) What minimum and maximum initial sag would you allow
for a safety net?
¼ and 1/5 of the shortest side length
6. e) What minimum clearance would you ensure below a safety
net?
2/3 of the shortest side length or 2m, whichever is
greater
6. f) What minimum horizontal distance should an outrigged
safety net extend past the outermost working position?
2/5 of the maximum fall height plus 2m
6. g) What maximum spacing would you use between ties along
the border chord of a safety net?
750mm
6. h) What is the minimum overrun distance between the hoist
rope attachment and the head sheave on a cantilevered platform hoist?
1.5m
6. i) What is the minimum and maximum horizontal clearance
between the moving platform of a cantilevered hoist and any landing or floor?
25mm and 100mm
6. j) What is the minimum height of a landing gate for a
cantilevered platform hoist?
1.8m
6. k) What maximum distance would you use between lateral
braces of a cantilevered platform hoist?
6m
6. l ) How high would you free-stand the tower of a
cantilevered platform hoist above its last tie?
3m
APPLICANT'S NAME: _____________________________ SIGNATURE: ____________________________
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