PASMA Tower Scaffold Operator Assessment — Questions and Answers

Question 1: Under WAHR 2005, what is the requirement for providing personal protective equipment (PPE) for work at height?

PPE must always be provided instead of collective protection
PPE is never required for work at height
PPE is only required above 10 metres
PPE should be used as a last resort after collective protection measures have been considered (Correct answer)

Correct answer: PPE should be used as a last resort after collective protection measures have been considered

Under the WAHR 2005 hierarchy, personal protective equipment (such as harnesses) should only be used when collective protection measures (such as guard rails) are not reasonably practicable. PPE is the last resort, not the first option.

Question 2: What happens to the stability of a tower scaffold during the assembly process?

Stability decreases as the tower gets taller, so the build sequence must maintain the base-to-height ratio at every stage (Correct answer)
The tower is most stable during assembly
Assembly has no effect on stability
Stability is constant throughout assembly

Correct answer: Stability decreases as the tower gets taller, so the build sequence must maintain the base-to-height ratio at every stage

As each lift is added, the tower gets taller and the height-to-base ratio changes. The assembly sequence must ensure that at every stage, the tower remains within safe stability limits. Outriggers may need to be fitted before the tower reaches its full height.

Question 3: What duty does an employee have under the Work at Height Regulations 2005?

To inspect all scaffolding on site regardless of training
To use work at height equipment properly and report any hazards they identify (Correct answer)
No duties — all responsibility lies with the employer
To carry out their own risk assessments without supervision

Correct answer: To use work at height equipment properly and report any hazards they identify

Employees must use equipment provided for work at height in accordance with their training, report any hazards or defects they identify, and follow the safe systems of work established by their employer.

Question 4: Under WAHR 2005, what is the hierarchy for managing work at height?

Minimise, avoid, prevent
Prevent, avoid, minimise
Avoid, prevent, minimise (Correct answer)
Minimise, prevent, avoid

Correct answer: Avoid, prevent, minimise

The hierarchy is: first AVOID working at height if possible; if not, PREVENT falls using suitable equipment; if residual risk remains, MINIMISE the distance and consequences of a fall. This hierarchy must be followed in order.

Question 5: What additional requirement does WAHR 2005 impose when work at height involves a risk of falling into water?

Only reflective clothing is required
No additional requirements apply
Workers must be able to swim
Additional measures must be taken including the provision of life jackets, rescue boats, and trained rescue personnel (Correct answer)

Correct answer: Additional measures must be taken including the provision of life jackets, rescue boats, and trained rescue personnel

When there is a risk of falling into water, additional precautions must include personal flotation devices, rescue boats or equipment, trained rescue personnel, and measures to prevent drowning. Hypothermia risk must also be assessed.

Question 6: What is meant by 'collective protection' in the context of WAHR 2005?

Safety equipment that protects everyone in the area without individual action, such as guard rails (Correct answer)
A group insurance policy
Each worker wearing their own harness
A collective bargaining agreement about safety

Correct answer: Safety equipment that protects everyone in the area without individual action, such as guard rails

Collective protection measures (e.g., guard rails, toe boards, safety nets) protect everyone in the area without requiring any action by the individual. Under the WAHR 2005 hierarchy, collective protection is preferred over personal protection (e.g., harnesses).

Question 7: How should a tower scaffold be managed in an area where public access cannot be fully controlled?

Members of the public can use the tower as a viewing platform
Physical barriers, signage, and lighting must be used to prevent public contact with the tower, and the tower should be secured against unauthorised climbing (Correct answer)
No special management is needed
Only a warning sign is needed

Correct answer: Physical barriers, signage, and lighting must be used to prevent public contact with the tower, and the tower should be secured against unauthorised climbing

In public areas, the tower must be barricaded to prevent contact, warning signs displayed, and the bottom ladder section removed or blocked to prevent unauthorised climbing. Overnight, additional security measures may be needed to prevent tampering or misuse.

Question 8: What does a visual check for 'plumb' involve during a tower inspection?

Checking that the tower is vertically straight and not leaning to one side (Correct answer)
Checking the tower has been painted correctly
Checking the plumbing connections for water
Checking the tower can withstand an earthquake

Correct answer: Checking that the tower is vertically straight and not leaning to one side

Checking for plumb means verifying the tower is vertically upright and not leaning in any direction. A tower that is out of plumb has a shifted centre of gravity, increasing the risk of overturning. A spirit level can be used to verify.

Question 9: What should be inspected regarding the platforms and decking of a tower scaffold?

That they are painted with non-slip paint
That they can be easily removed by one person
That they are lightweight enough to carry by hand
That they are fully boarded, free from defects, wind locks engaged, and trapdoors functional (Correct answer)

Correct answer: That they are fully boarded, free from defects, wind locks engaged, and trapdoors functional

Platforms must be fully boarded with no gaps, wind locks or clips engaged to prevent uplift, trapdoors functioning correctly, and boards free from splits, cracks, warping, or excessive wear that could compromise their strength.

Question 10: In the UK, which emergency services number(s) can be used to summon help following a mobile access tower accident?

111 only
999 or 112 (Correct answer)
101 or 112
999 only

Correct answer: 999 or 112

Both 999 and 112 connect to UK emergency services and either number can be used in any emergency situation.

Question 11: What effect does working at the edge of a platform have on tower stability?

It only affects stability above 10 metres
It improves stability by distributing weight evenly
No effect
It moves the centre of gravity towards the edge, increasing the risk of overturning (Correct answer)

Correct answer: It moves the centre of gravity towards the edge, increasing the risk of overturning

When an operative works at the platform edge (e.g., leaning out to reach something), their weight shifts the combined centre of gravity towards that edge. This reduces the restoring moment on that side and increases the overturning moment.

Question 12: What precautions should be taken when using a tower scaffold in freezing conditions?

No special precautions are needed in the cold
Work faster to stay warm
Only use the tower before sunrise
Check for ice on platforms, rungs, and components; apply grit to platforms; ensure operatives wear appropriate clothing and gloves without losing grip (Correct answer)

Correct answer: Check for ice on platforms, rungs, and components; apply grit to platforms; ensure operatives wear appropriate clothing and gloves without losing grip

Freezing conditions create ice on platforms, rungs, and handholds, dramatically increasing slip risk. Frost can also weaken components over time. Platforms must be de-iced and gritted. Operatives need warm clothing but must maintain dexterity and grip.

Question 13: What does Regulation 6 of WAHR 2005 require regarding avoiding work at height?

Work at height can never be avoided on construction sites
Regulation 6 does not address avoidance
Work at height must be avoided so far as is reasonably practicable (Correct answer)
All work at height must be avoided at all times

Correct answer: Work at height must be avoided so far as is reasonably practicable

Regulation 6 requires that work at height is avoided so far as is reasonably practicable. If it cannot be avoided, suitable measures must be put in place to prevent or minimise falls.

Question 14: What is the consequence of failing to maintain proper tower scaffold inspection records?

No consequence — records are optional
It is a breach of WAHR 2005, potentially resulting in enforcement action, prohibition notices, fines, or prosecution (Correct answer)
A polite letter from the HSE
Loss of the tower's warranty only

Correct answer: It is a breach of WAHR 2005, potentially resulting in enforcement action, prohibition notices, fines, or prosecution

Failure to maintain inspection records is a breach of Schedule 6 of WAHR 2005. The HSE can issue improvement notices, prohibition notices (stopping the work), or prosecute. In the event of an accident, absent records significantly worsen the legal position.

Question 15: What is the correct sequence for dismantling a mobile tower scaffold?

Top down, reversing the assembly procedure (Correct answer)
Any order is acceptable as long as it is quick
Remove all platforms first, then frames
Bottom up, removing base frames first

Correct answer: Top down, reversing the assembly procedure

Towers must always be dismantled from the top down, reversing the assembly sequence. This maintains structural integrity throughout the process and ensures operatives are always working from a stable platform.

Question 16: What must be considered about the route before moving a tower scaffold?

Only the distance
The ground surface, overhead clearances, slopes, obstacles, door widths, and the presence of other workers (Correct answer)
Only whether the route is indoors or outdoors
Nothing — just push and steer

Correct answer: The ground surface, overhead clearances, slopes, obstacles, door widths, and the presence of other workers

Before moving, survey the route for: ground condition and levelness, overhead cables/pipes/beams, slopes or steps, obstructions, doorway widths, floor load limits, and people in the path. A clear, flat, firm route is essential for safe movement.

Question 17: What end-of-day environmental checks should be performed on a tower scaffold that will remain erected overnight?

Simply leave the site
Secure or remove all loose items, check weather forecast, verify all brakes are locked, check stabilisers, and remove bottom ladder section to prevent unauthorised access (Correct answer)
No checks are needed at the end of the day
Turn off the tower's lights

Correct answer: Secure or remove all loose items, check weather forecast, verify all brakes are locked, check stabilisers, and remove bottom ladder section to prevent unauthorised access

Before leaving: remove or secure all loose materials and tools, check the weather forecast for overnight conditions, verify all brakes are fully applied, confirm stabilisers are correctly deployed, and block or remove the bottom access to prevent unauthorised use or climbing.

Question 18: Can a tower scaffold be used as a means of permanent access (e.g., to a roof)?

Yes, but only if fitted with a handrail on the outside
No — tower scaffolds are temporary work platforms, not designed as permanent access structures (Correct answer)
Yes, if it is inspected daily
Yes, tower scaffolds can serve as permanent access points

Correct answer: No — tower scaffolds are temporary work platforms, not designed as permanent access structures

Tower scaffolds are designed as temporary mobile work platforms, not permanent access structures. They do not meet the requirements for permanent access (e.g., fixed stairways, access ladders with back guards). Permanent access needs should be met with purpose-designed structures.

Question 19: How should a tower scaffold be positioned relative to the sun during prolonged outdoor use?

Always work facing north
Sun position is irrelevant
Facing directly into the sun for maximum light
Where possible, position to minimise prolonged sun exposure to operatives, considering shade structures or rest schedules (Correct answer)

Correct answer: Where possible, position to minimise prolonged sun exposure to operatives, considering shade structures or rest schedules

Prolonged sun exposure at height (no shade) increases heat stress, sunburn, and dehydration risks. Where possible, schedule work to avoid peak sun hours, provide shade canopies, ensure water is available at platform level, and factor in rest breaks.

Question 20: What must outriggers rest on to be effective?

Firm, level ground with base plates to spread the load (Correct answer)
The tower's own castor wheels
Loose gravel
Nothing — they can be suspended in the air

Correct answer: Firm, level ground with base plates to spread the load

Outriggers must make firm contact with the ground through base plates that spread the load. If the ground is soft, sole boards may be needed under the base plates. An outrigger resting on soft ground can sink, rendering it ineffective.

Question 21: What is the significance of the 'narrowest base dimension' when calculating height-to-base ratio?

Use the diagonal dimension
Use the average of all dimensions
It is not significant — use the widest dimension
The height-to-base ratio is always calculated using the narrowest base dimension because the tower is weakest in that direction (Correct answer)

Correct answer: The height-to-base ratio is always calculated using the narrowest base dimension because the tower is weakest in that direction

The narrowest base dimension determines the tower's most vulnerable direction for overturning. A tower with a rectangular base will tip most easily along its narrow axis. The height-to-base ratio must be calculated using this narrowest dimension.

Question 22: What should be checked about the internal ladder access during an inspection?

That the ladder is detachable for use elsewhere
That the ladder rungs are wide enough for two people side by side
That the ladder is externally mounted
That ladder frames are correctly positioned, rungs are undamaged, and climb path is unobstructed (Correct answer)

Correct answer: That ladder frames are correctly positioned, rungs are undamaged, and climb path is unobstructed

Internal ladder frames must be in the correct position as per the manufacturer's instructions, with all rungs intact and undamaged. The climb path through trapdoors must be clear of obstructions, and platforms must be in place at each level.

Question 23: What is the minimum number of people required to safely assemble a standard mobile tower scaffold?

One person working alone
Two people (Correct answer)
Four people
Six people

Correct answer: Two people

PASMA recommends a minimum of two people for safe tower assembly — one to pass components and one to assemble at height. Working alone increases the risk of dropped components and unassisted falls.

Question 24: What precautions must be taken when using a tower scaffold near overhead obstructions?

No precautions are needed
Only a hard hat is needed
Overhead obstructions improve stability by limiting tower sway
The overhead clearance must be checked to ensure the tower and its occupants will not contact ceiling structures, pipes, cables, or overhead power lines (Correct answer)

Correct answer: The overhead clearance must be checked to ensure the tower and its occupants will not contact ceiling structures, pipes, cables, or overhead power lines

Overhead obstructions (ceiling beams, pipes, cable trays, overhead cranes, power lines) must be identified and safe clearances maintained. Contact with overhead power lines can be fatal. Head clearance on the platform must allow safe working posture.

Question 25: What should be done with a tower scaffold if a storm is forecast overnight?

Move it to the centre of the car park
Cover it with a tarpaulin
Leave it as it is — it will be fine
Dismantle it or reduce it to minimum height, secure all loose items, and consider tying the tower to a fixed structure (Correct answer)

Correct answer: Dismantle it or reduce it to minimum height, secure all loose items, and consider tying the tower to a fixed structure

If a storm is forecast, the tower should be dismantled if possible, or reduced to minimum height. All loose items (boards, tools, materials) must be removed. If dismantling is not possible, consider tying the tower to a permanent structure and deploying all stabilisers.

Question 26: How should the environmental impact of tower scaffold use on ecologically sensitive sites be managed?

Only concrete surfaces should be used
Environmental impact is not a concern for scaffolding
Ground protection measures should be used to prevent damage to habitats, and work should avoid nesting seasons or protected species areas (Correct answer)
The tower should be painted green for camouflage

Correct answer: Ground protection measures should be used to prevent damage to habitats, and work should avoid nesting seasons or protected species areas

On ecologically sensitive sites, ground protection (boards, mats) prevents damage to vegetation and habitats. Work near nesting birds (protected under the Wildlife and Countryside Act 1981) may be restricted during breeding season (March-August). An ecological survey may be required.

Question 27: What are sole boards and when should they be used?

Sole boards are the lowest rung of the ladder
Sole boards are the platforms at the top of the tower
Timber boards placed under base plates on soft ground to further distribute the load and prevent sinking (Correct answer)
Sole boards replace the need for castors

Correct answer: Timber boards placed under base plates on soft ground to further distribute the load and prevent sinking

Sole boards are timber planks (typically scaffold boards) placed under the base plates when the ground is soft, such as on grass, recently filled ground, or muddy surfaces. They further spread the load to prevent the tower from sinking unevenly.

Question 28: What are the signs of Beaufort Force 4 wind that would trigger stopping work on a tower?

Trees being uprooted
Small branches move, dust and loose paper are raised, small waves on inland waters (Correct answer)
Complete calm with no air movement
Chimney pots and roof tiles being blown off

Correct answer: Small branches move, dust and loose paper are raised, small waves on inland waters

Beaufort Force 4 indicators include: small branches moving, dust and loose paper being raised from the ground, and small waves forming on inland waters. These are observable conditions that operatives can use to judge when to stop work.

Question 29: According to HSE statistics, falls from height are consistently one of the top causes of what in the UK construction industry?

Late project completion
Equipment damage
Workplace fatalities and major injuries (Correct answer)
Environmental pollution

Correct answer: Workplace fatalities and major injuries

Falls from height are consistently one of the largest single causes of workplace fatalities and major injuries in the UK construction industry, accounting for approximately 40+ deaths per year across all industries.

Question 30: Under WAHR 2005, who is a 'competent person' for inspecting scaffolding?

Only the tower scaffold manufacturer
A person with sufficient training, experience, and knowledge to identify hazards and defects (Correct answer)
Any person on the construction site
Only an HSE inspector

Correct answer: A person with sufficient training, experience, and knowledge to identify hazards and defects

A competent person is someone who has adequate training, practical experience, and sufficient knowledge to identify defects and hazards. For tower scaffolds, PASMA training is the industry-recognised standard.

Question 31: When first responding to a person who has fallen from a mobile access tower, which of the following actions should you NOT take?

Call 999 or 112 for emergency services
Make the area safe to prevent further accidents
Provide verbal reassurance to the conscious casualty
Move the casualty unless there is immediate danger to life (Correct answer)

Correct answer: Move the casualty unless there is immediate danger to life

A fallen casualty should not be moved unless there is an immediate threat to life, as movement could worsen potential spinal or neck injuries sustained during the fall.

Question 32: A near-miss incident involving a mobile access tower should be treated in which of the following ways?

Reported only if there is a likelihood of the near-miss recurring
Reported in accordance with company procedures regardless of whether anyone was hurt (Correct answer)
Recorded and reported only if someone was actually injured
Kept confidential between those directly involved

Correct answer: Reported in accordance with company procedures regardless of whether anyone was hurt

All near-miss incidents must be reported following company procedures so that lessons can be learned and corrective action taken to prevent future accidents.

Question 33: What is the recommended method for assembling a mobile aluminium tower scaffold?

Rope and pulley method
Advance guard rail method (AGR) (Correct answer)
Freestanding climb method
Traditional method from a ladder

Correct answer: Advance guard rail method (AGR)

The advance guard rail (AGR) method, also known as 3T (Through The Trap), is the recommended method as it ensures the operative is always protected by guard rails during assembly. This is endorsed by PASMA and meets the Work at Height Regulations 2005.

Question 34: What is the purpose of horizontal braces (ledgers) in a tower scaffold?

To support advertising banners
To act as a ladder for climbing
To provide lateral stability and maintain frame spacing (Correct answer)
To provide a place to hang tools

Correct answer: To provide lateral stability and maintain frame spacing

Horizontal braces connect the two frames together, maintaining the correct spacing and providing lateral stability. Without them, the tower would be prone to racking and collapse.

Question 35: How does altitude (above sea level) affect tower scaffold use?

Higher altitude makes the tower lighter and safer
Altitude only matters above 3,000 metres
Higher altitudes generally mean higher wind speeds, lower temperatures, and reduced air pressure, all of which affect worker performance and tower stability (Correct answer)
Altitude has no effect

Correct answer: Higher altitudes generally mean higher wind speeds, lower temperatures, and reduced air pressure, all of which affect worker performance and tower stability

At higher altitudes (e.g., mountainous terrain), wind speeds tend to be higher, temperatures lower, and the reduced air density can affect breathing during physical exertion. These factors must be considered in the risk assessment for elevated work sites.

Question 36: What is the correct procedure if a tower scaffold is found to be swaying or rocking during use?

Continue working as some movement is normal
Stop work immediately, descend, and have the tower inspected by a competent person (Correct answer)
Tie the tower to the nearest tree
Add more materials to the platform to weigh it down

Correct answer: Stop work immediately, descend, and have the tower inspected by a competent person

Noticeable swaying or rocking indicates a potential stability problem — loose braces, failed castor brakes, soft ground, or the tower being out of plumb. All operatives must descend immediately and the tower must be inspected and corrected before further use.

Question 37: What documentation should be available on site during a tower scaffold inspection?

The manufacturer's instruction manual, previous inspection reports, risk assessment, and method statement (Correct answer)
Only the purchase invoice
Only the company brochure
No documentation is required

Correct answer: The manufacturer's instruction manual, previous inspection reports, risk assessment, and method statement

The inspector needs access to the manufacturer's instruction manual (to verify correct assembly), previous inspection reports (to check recurring issues), and the risk assessment and method statement (to verify controls are in place).

Question 38: What must an employer do if work at height cannot be avoided?

Use work equipment or other measures to prevent falls, and if prevention is not possible, minimise fall distance and consequences (Correct answer)
Only carry out the work during daylight hours
Accept the risk and proceed
Outsource the work to a subcontractor to transfer the risk

Correct answer: Use work equipment or other measures to prevent falls, and if prevention is not possible, minimise fall distance and consequences

If work at height cannot be avoided, the employer must use equipment or measures to prevent falls (e.g., guard rails, platforms). If falls cannot be entirely prevented, measures must minimise the distance and consequences of any fall (e.g., nets, airbags).

Question 39: What should an operative check before loading materials onto the tower platform?

That the materials are the correct colour
That there is a receipt for the materials
That the materials are dry
That the total weight of materials plus persons will not exceed the platform's safe working load (Correct answer)

Correct answer: That the total weight of materials plus persons will not exceed the platform's safe working load

The total weight of all persons, tools, materials, and equipment on the platform must not exceed the manufacturer's safe working load. The operative should estimate the total load and compare it against the SWL stated on the manufacturer's plate.

Question 40: What is the maximum wind speed at which work on a tower scaffold should generally cease?

17 mph (Beaufort Force 4) (Correct answer)
50 mph
10 mph
30 mph

Correct answer: 17 mph (Beaufort Force 4)

PASMA recommends that work ceases when wind speeds reach 17 mph (Beaufort Force 4), at which point small branches move and dust/paper is raised. Tower scaffolds have large surface areas and are particularly susceptible to wind forces.

PASMA Tower Scaffold Operator Assessment

The PASMA (Prefabricated Access Suppliers' and Manufacturers' Association) Tower Scaffold Operator card scheme assessment tests knowledge of safe tower scaffold assembly, inspection, working at height regulations, stability, outriggers, and environmental considerations.

Questions

45 min

Time Limit

75%

To Pass

Checking for saved progress...

Exam Rules

You can skip questions and return to them later
Flag questions for review before submitting
No feedback shown until you submit the entire exam
Unanswered questions count as wrong — answer everything
10 pretest questions are mixed in and don't affect your score
Timer auto-submits when time runs out
Your progress is auto-saved every 30 seconds

These practice questions were written with AI tools. They are not real exam questions. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

pasma.co.uk — Eligibility, exam dates, passing score, time limit, score validity, test delivery, fees, renewal, retake policy · verified Oct 2026