100+ Free Intermediate Scaffolding (SI) Practice Questions

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2026 Statistics

Key Facts: Intermediate Scaffolding (SI) Exam

100

Practice Questions

OpenExamPrep

CPCCLSF3001

Official Unit Code

training.gov.au

100%

Theory Pass Mark

State Regulators

5 Years

Licence Validity

SafeWork Australia

The Australia Intermediate Scaffolding (Class SI) licence is a high risk work credential covering cantilever scaffolds, gantries, barrow ramps, perimeter screens, and mast climbers. It requires a 100% passing mark on the theory exam. This free prep includes 100 practice questions.

Sample Intermediate Scaffolding (SI) Practice Questions

Try these sample questions to test your Intermediate Scaffolding (SI) exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1What is the primary danger associated with an unsecured inboard end of a cantilevered scaffolding needle?

A.The needle will pivot at the building edge, tipping the outboard scaffold and workers into a fall

B.The needle will slide horizontally into the building interior

C.The standards will slide down the sleeve couplers

D.The concrete floor slab will crack under tension forces at the pivot point

Explanation: The outboard load creates a lever effect. If the inboard end is not secured by mechanical tie-downs, the needle will rotate about the edge (pivot point) and cause the scaffold to fall.

2Why is it important to install kickboards (toeboards) on all open sides of a scaffold working platform?

A.To reinforce the structural strength of the ledgers

B.To prevent tools, materials, and debris from being kicked off the platform edge and falling below

C.To provide a footrest for workers during break periods

D.To secure the scaffold planks against wind uplift

Explanation: Kickboards are mandatory safety barriers installed along the floor edge of working platforms to prevent items from falling onto people below.

3When connecting an inclined spur to a standard using right-angle couplers, what is the design shear load capacity of the standard coupler, and why must a safety coupler be used?

A.A standard coupler is rated at 12.5 kN slip, so safety couplers are only required if the load exceeds 20 kN

B.Standard couplers cannot resist any slip along the standard, so they are only used to align the tubes

C.A standard right-angle coupler is rated at 6.25 kN slip, and a safety (check) coupler is added directly underneath to act as a physical stopper in case of slip

D.Safety couplers are only required if the spur is angled steeper than 75 degrees

Explanation: A right-angle coupler has a safe slip capacity of 6.25 kN. When a spur transfers heavy vertical forces to a standard, a second 'check' or safety coupler is clamped tight directly below the load-bearing coupler to physically prevent it from slipping down the tube.

4In a heavy-duty covered way gantry, how does wind load affect the design of the overhead protection deck?

A.Wind load can be ignored because pedestrian walkways are always sheltered by adjacent buildings

B.Wind load only affects the standards and does not create uplift on the deck plates

C.The weight of the concrete or timber panels is always sufficient to resist wind uplift without mechanical ties

D.The solid deck acts as a horizontal sail, generating significant uplift and horizontal forces that require positive tie-downs and heavy transverse bracing at the columns

Explanation: The solid overhead protection deck of a gantry is subject to wind drag and lift. It must be designed to resist wind forces by using positive mechanical fixings to the structure and adequate bracing to transfer horizontal wind loads to the ground.

5How does the addition of perimeter safety screens affect the wind loads on a scaffold structure?

A.It significantly increases wind resistance, acting like a sail and requiring more ties to the building slab

B.It has no effect because wind passes through the screen mesh completely

C.It reduces wind loads by deflecting wind away from the standards

D.It stabilizes the scaffold by weighing down the outer standards

Explanation: Safety screens act as windbreaks. The horizontal force generated by wind blowing against the screens is transferred to the scaffold, requiring additional ties to prevent collapse.

6If a cantilevered scaffold needle projects 1.2 meters beyond the building edge, what is the minimum inboard length required to comply with the 3:1 ratio?

A.1.2 m

B.3.6 m

C.2.4 m

D.4.8 m

Explanation: Using the 3:1 ratio: Outboard length of 1.2 m multiplied by 3 gives a minimum inboard length of 3.6 m.

7How are the vertical masts of an MCWP stabilized on a building?

A.By bracing them with guy wires anchored to ground pegs

B.By clamping them to copper plumbing pipes

C.By securing them to structural concrete columns or floor slabs using engineered tie assemblies at specified intervals

D.By relying on the weight of the platform to keep the mast vertical

Explanation: Masts must be tied to the building structure using certified anchor bolts and steel tie frames at regular vertical intervals to prevent buckling.

8Why must a scaffold with perimeter screens be tied to the building more frequently than an open scaffold?

A.To offset the heavy weight of the mesh panels

B.To prevent the screens from sliding down the vertical standards

C.To allow workers to climb the outer face of the scaffold

D.To resist the increased horizontal wind forces (suction and pressure) acting on the solid surface of the screens

Explanation: Wind blowing against screens creates substantial horizontal pressure and suction. Additional ties are required to transfer these wind forces directly into the building structure.

9What is the required spacing for cleats on a barrow ramp under AS/NZS 1576?

A.450 mm apart

B.150 mm apart

C.300 mm apart

D.600 mm apart

Explanation: AS/NZS 1576 specifies that cleats must be spaced approximately 450 mm apart to match the average human stride on an incline.

10A scaffold is fitted with solid safety screens. Wind pressure is calculated at 0.6 kPa. Calculate the total horizontal wind force acting on a screen section that is 4.0 m wide by 6.0 m high.

A.2.4 kN

B.14.4 kN

C.24.0 kN

D.8.6 kN

Explanation: First, calculate the area: 4.0 m * 6.0 m = 24.0 m^2. Total force = Pressure * Area = 0.6 kN/m^2 * 24.0 m^2 = 14.4 kN.

About the Intermediate Scaffolding (SI) Exam

The Australia High Risk Work Licence for Intermediate Scaffolding (Class SI) assessment certifies competency under the unit CPCCLSF3001. It permits licence holders to erect, alter, and dismantle intermediate-level scaffolding including tube and coupler covered ways and gantries, cantilevered scaffolds and spur scaffolds, barrow ramps and sloping platforms, perimeter safety screens and shutters, and mast climbing work platforms. Candidates must perform safety calculations, verify structural capacity, inspect components, and demonstrate safe work methods.

Assessment

Closed-book theory knowledge assessment (100% pass mark), load and safety calculations, and a hands-on practical rigging and erection test.

Time Limit

No strict limit; usually completed within a dedicated 4 to 5-day RTO course.

Passing Score

100% on theory

Exam Fee

Approx. $1,100 to $1,800 AUD for course training and assessment, plus a separate $100 - $130 AUD state regulator fee to issue the licence. (Accredited Registered Training Organisations (RTOs) on behalf of state WHS regulators (SafeWork NSW, WorkSafe Victoria, WorkSafe QLD, etc.))

Intermediate Scaffolding (SI) Exam Content Outline

30%

Tube & Coupler Scaffolding

Designing, erecting, and altering tube and coupler systems including covered ways, gantries, spacing of standards, and loading limits under AS/NZS 1576.

25%

Cantilever & Spur Scaffolds

Structural requirements for cantilevered needles, counterweights, inboard-to-outboard ratios, slab anchor calculations, and diagonal spur configurations.

20%

Barrow Ramps & Perimeter Screens

Incline angles, cleat spacing, and wheel tracks for sloping barrow ramps, along with wind load forces and containment rules for perimeter screens.

25%

Mast Climbing Work Platforms

Erecting, operating, and tying mast climbers, interpreting manufacturer loading specs, base pressure, safety drop testing, and overhead clearance.

How to Pass the Intermediate Scaffolding (SI) Exam

What You Need to Know

Passing score: 100% on theory
Assessment: Closed-book theory knowledge assessment (100% pass mark), load and safety calculations, and a hands-on practical rigging and erection test.
Time limit: No strict limit; usually completed within a dedicated 4 to 5-day RTO course.
Exam fee: Approx. $1,100 to $1,800 AUD for course training and assessment, plus a separate $100 - $130 AUD state regulator fee to issue the licence.

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

Intermediate Scaffolding (SI) Study Tips from Top Performers

1Understand the 3:1 leverage rule for cantilevered needles: the inboard length must be at least three times the outboard projection to ensure stability under load.

2Learn the slope rules for ramps: a barrow ramp must not exceed 20 degrees, and slip-restraining cleats spaced at 450 mm with a 100 mm center wheel gap are required for slopes above 7 degrees.

3Master load calculations for standard tube and coupler spacing: standard maximum spacing is 3.0m for light-duty, 2.4m for medium-duty, and 1.8m for heavy-duty platforms.

4Study wind load dynamics on perimeter screens: safety screens create significant lateral wind forces, requiring a structural review and additional ties back to the building structure.

Frequently Asked Questions

What is the prerequisite for the Intermediate Scaffolding (SI) licence?

You must hold a valid CPCCLSF2001 Basic Scaffolding (SB) licence and be at least 18 years of age before undertaking the Intermediate course.

What score is required to pass the Intermediate Scaffolding theory test?

The theory knowledge assessment requires a 100% pass mark. If you answer a question incorrectly, your assessor will guide you to review the concept, but you must demonstrate complete competency before being certified.

What are the core topics tested under CPCCLSF3001?

The exam covers four main areas: tube-and-coupler scaffolding (including covered ways and gantries), cantilevered and spur scaffolds, barrow ramps and sloping platforms, and mast climbing work platforms.