Intermediate Scaffolding (SI) cheat sheet

Intermediate scaffolding sits between basic and advanced classes; the licence class authorises work on specific scaffold types listed in the national competency standard, not every scaffold type.

A licensed scaffolder must hold the correct class for the work; working outside the class conditions is an offence even if the person is experienced.

High-risk work licensing requires the person to be at least 18 years old and to have completed the required training and assessment with a registered training organisation.

Licences are issued by the work health and safety regulator in each jurisdiction; conditions on the licence (such as type of scaffold) must be complied with.

Scaffold work over 4 metres in height generally requires a licensed scaffolder; below that height, other competent persons may erect some scaffolds under defined conditions.

A person conducting a business or undertaking (PCBU) must ensure scaffolding work is done by licensed or competent workers and that plant is inspected and maintained.

Licence renewals and variations are time-limited; working on an expired or suspended licence is treated as unlicensed work.

Records of licences, inductions, and high-risk work certificates must be kept and produced on request to an inspector.

A scaffold plan must identify the scaffold type, dimensions, load class, foundation, tie arrangement, and access before any material is placed on site.

Ground bearing capacity must be confirmed by inspection or geotechnical advice; soft, sloping, or recently excavated ground needs soleboards, base plates, or engineered support.

Overhead hazards to check include powerlines (with exclusion zones), crane paths, and adjacent structures; service clearances must be verified with the asset owner.

A site-specific risk assessment and safe work method statement (SWMS) must be prepared for high-risk construction work before erection begins.

Underground services, drains, and pits must be located and protected; base plates must not sit over unpropped pits or service trenches.

Public protection (hoarding, fencing, signage, and where required a covered gantry) must be planned before scaffold erection near a public way.

Materials must be inspected before use: rejected tubes, bent standards, damaged planks, and faulty couplers are tagged and removed from service.

The scaffold design must account for wind loading and tie requirements; ties must be installed as erection proceeds, not left to the end.

Erection sequence: set out base plates, fit standards and ledgers, install transoms, then planks, guardrails, and toe boards before the next lift is used.

Ties must be installed at the spacing specified by the design; a scaffold must not be left untied overnight or during high winds unless the design permits it.

Standards must be plumb within the tolerance specified by the manufacturer or design (commonly 1 in 500 or tighter); check with a spirit level at each lift.

Ledgers must be level and at the specified lift height; joints in ledgers and standards must be staggered and not occur at the same node.

Guardrails must be fitted at the specified heights (commonly top rail around 900-1100 mm and mid rail) with toe boards where materials could fall.

Dismantling proceeds in reverse order of erection, from the top down, with ties removed only as the work descends; dropping components is prohibited.

Alterations to a completed scaffold require reassessment and, where the change affects structural capacity, a revised design or engineer's advice.

Scaffold access must be by internal ladder or stairway with a secure landing; climbing the scaffold frame is not permitted.

Falls from height are the primary scaffold hazard; control by guardrails, toe boards, harness use where required, and a documented rescue plan.

Falling object control includes toe boards, mesh or brick guards, tool lanyards, and exclusion zones below the scaffold.

Manual handling injuries are controlled by team lifting, mechanical hoists, and planning material delivery to the level being worked.

Scaffold loads must not exceed the rated duty (light, medium, or heavy); point loads, concentrated loads, and impact loads require design check.

Materials stored on the platform must be distributed evenly and secured against wind; loose items are removed before breaks and at end of shift.

Electrical hazards: scaffolds near powerlines require isolation or exclusion zones; metal scaffolds conduct, so earth leakage protection and RCDs apply to tools.

Emergency procedures must include rescue of a suspended person, first aid, and communication; harness users must never be left unattended.

Inspection before each use and after events (high wind, impact, alteration) must be recorded; defective scaffolds are tagged out and not used.

Duty ratings: light duty typically up to 225 kg per bay, medium up to 450 kg, heavy up to 675 kg; the actual rating must come from the scaffold design or manufacturer.

Dead load includes standards, ledgers, transoms, planks, and guardrails; live load includes workers, tools, and materials; wind load is applied separately.

Loads must be applied to the platform, not to guardrails or ties; guardrails are not designed as load-bearing members.

Point loads from concentrated plant or stacked materials must be checked against the plank or deck capacity and spread over bearers if needed.

Ties transfer horizontal (wind and stability) loads to the structure; removing ties without design approval reduces capacity and can cause collapse.

Foundation settlement or undermining changes load paths; base plates must bear fully on soleboards and be re-checked after rain or ground disturbance.

Load class signage must be displayed at the access point so users know the permitted duty and any restrictions.

Overloading evidence includes excessive deflection, plank bounce, misaligned couplers, or movement at ties; the scaffold is unloaded and inspected immediately.

A scaffold inspection regime includes inspection before first use, at intervals not exceeding 30 days, and after any event that could affect stability.

Inspection records must identify the scaffold, date, inspector, defects found, and action taken; tags indicate pass, fail, or incomplete status.

A competent person for inspection must have the knowledge and experience to identify defects in the specific scaffold type and its ties and foundations.

Hazard hierarchy: eliminate the need to work at height, then use passive controls (guardrails, platforms), then administrative controls, then PPE last.

Housekeeping on and around the scaffold controls trip, slip, and falling-object hazards; waste and offcuts are removed from platforms promptly.

Weather controls: work stops or the scaffold is secured when wind speeds exceed the manufacturer's or design's limit; ice and water on platforms are cleared.

Communication and signage control access; unauthorised access to a scaffold under erection or dismantling is prevented by barriers and warning signs.

Incident and near-miss reporting feeds back into the SWMS and inspection schedule; recurring defects indicate a design or training problem.

The PCBU has the primary duty to ensure health and safety so far as reasonably practicable, including providing a safe scaffold system of work.

Officers, supervisors, and workers each have duties: workers must follow safety procedures, use PPE, and report hazards and defects.

Design documentation must be available on site for scaffolds requiring design; generic handbooks are not a substitute for site-specific design.

High-risk construction work requires a SWMS that is reviewed and revised when the work changes; workers must be trained in it.

Notifiable incidents (collapse, fall from height, serious injury) must be reported to the regulator; the site may be preserved for investigation.

Consultation with workers on scaffold planning and hazard controls is a legal requirement, not optional good practice.

Records to retain include licences, induction and training records, inspection reports, maintenance logs, and incident reports.

Regulator inspectors can enter sites, issue improvement or prohibition notices, and require documents; non-compliance can lead to prosecution.

Intermediate scaffolding typically covers modular or frame scaffolds, cantilevered or spurred scaffolds within defined limits, and some mobile scaffolds, depending on the jurisdiction's competency standard.

Frame scaffolds use prefabricated frames with cross braces; bracing must be complete in every bay and base plates must bear on stable ground.

Modular (cuplock, kwikstage-type) systems rely on node connections; the correct component for each node must be used and inspected for damage.

Mobile scaffolds must have castors locked during use, never be moved with people or materials on the platform, and be used on level, firm ground.

Cantilever and spur scaffolds transfer load back to the structure; the supporting structure and tie capacity must be verified by design.

Birdcage or independent scaffolds need internal access and may need extra ties; they are not automatically covered by every intermediate licence.

Scaffold height-to-base ratio affects stability; mobile towers require outriggers or stabilisers above the manufacturer's specified height.

Mixing components from different systems is not permitted unless the design engineer confirms compatibility and capacity.

Working platforms must be fully decked with planks secured against movement; gaps must not exceed the specified maximum to prevent tools and feet falling through.

Planks must overlap supports by the specified amount and be butted and fixed; cantilevered plank ends are not permitted unless designed.

Ladder access must extend above the landing by about one metre, be secured, and be set at the correct angle (about 1 in 4).

Edge protection is required on all open sides and ends; where guardrails are temporarily removed for access, they are replaced immediately.

Workers must not stand on guardrails, mid-rails, or toe boards to gain height; a proper platform or step is used.

Materials hoisted to a platform must be landed and secured before the hoist is released; the platform must not be shock-loaded.

During dismantling, workers must be tied off where a fall is possible and the area below must be cleared of people.

Scaffold tags and barriers communicate status; only authorised persons remove tags or alter the scaffold.

Total load on a standard = dead load of scaffold components above + live load from platforms tributary to that standard + wind load effects.

Bay area = bay length x bay width; uniform load per bay = duty rating x platform area, checked against the design's permitted load.

Wind load depends on location, terrain, height, and scaffold permeability; the design must specify tie spacing and any netting restrictions.

Netting and signage increase wind load and must be included in the design; adding netting to an existing scaffold requires a design check.

Deflection limits and coupler slip capacity govern serviceability; visible sag or slippage indicates overloading or poor assembly.

Soleboard size must spread the standard load so ground bearing pressure stays below the soil's allowable capacity.

Load combinations should consider dead + live, and dead + wind, as specified by the relevant structural standard.

Any change of use (e.g., from light to medium duty) requires re-rating, signage update, and inspection before use.

A scaffold tag records the scaffold ID, duty rating, date of inspection, inspector, and status (safe, incomplete, or do not use).

Defects to look for: bent or bowed standards, missing couplers, loose tie bolts, cracked planks, missing toe boards, and damaged base plates.

Couplers must be tightened to the specified torque (commonly around 50 Nm for right-angle couplers); check with a torque wrench.

Ties must be checked for pull-out, corrosion, and correct spacing; missing ties are a critical defect requiring immediate action.

Foundation checks include settlement, water pooling, soleboard condition, and base plate seating; record and correct before further use.

After high wind, impact, or alteration, the scaffold must be inspected by a competent person before re-use, regardless of the 30-day cycle.

Failed scaffolds are isolated, tagged, and reported; only a competent person clears the defect and removes the tag.

Inspection records must be retained and made available to workers and regulators on request.

A rescue plan for fallen or suspended workers must be documented, practised, and resourced before harness work begins.

Suspension trauma can occur within minutes; rescue must be prompt and the casualty kept still and monitored until help arrives.

First aid kits, trained first aiders, and communication (radio or phone) must be available at the scaffold location.

Emergency egress from the platform must be planned; ladders and stairways must remain clear of materials at all times.

Fire risk from hot work on or near scaffolds requires permits, fire blankets, and removal of combustible materials from platforms.

Heat, cold, and fatigue affect balance and judgement at height; work-rest cycles and hydration are part of the scaffold safety plan.

Lone work at height is generally avoided; if permitted, a check-in system and monitored communication are required.

Post-incident review updates the SWMS, training, and inspection schedule to prevent recurrence.

A competent person is defined by training, qualification, and experience for the specific task; experience alone is not sufficient without current knowledge.

Supervision must be proportionate to risk; intermediate scaffold erection typically requires a licensed scaffolder directing the work.

Toolbox talks and pre-start briefings communicate the scaffold plan, hazards, and changes to the crew before work begins.

Workers must be trained in the SWMS and in emergency procedures, and training records must be kept.

Clear hand signals or radio protocols are used for hoisting and crane operations near scaffolds.

Changes to the scaffold or its use must be communicated to all users and reflected in signage and documentation.

Induction covers site hazards, scaffold access rules, and reporting of defects; visitors are escorted and kept clear of scaffold zones.

Competency is maintained through refresher training and reassessment; new plant or systems require additional training.

Wind speed limits for erection, use, and dismantling are set by the manufacturer or design; work stops when limits are exceeded.

Netting, sheeting, and signage increase sail area; the design must confirm tie capacity and any height restrictions.

Rain and ice make platforms slippery and increase load; platforms are cleared and inspected before use.

Lightning risk near tall scaffolds requires stopping work and clearing the area; metal scaffolds conduct electricity.

Heat causes expansion and can affect tie tension; extreme temperature changes warrant a check of couplers and ties.

Ground conditions change with rain and frost; foundations are re-inspected after heavy weather.

Dust and debris generated by work on the scaffold must be controlled to protect workers and the public.

Weather events are recorded in the site diary and trigger a post-event inspection before re-use.

Where a scaffold adjoins a public way, overhead protection (fan, gantry, or catch platform) may be required by the regulator or the design.

Hoarding or fencing must prevent public access to the scaffold footprint and the drop zone.

Signage must warn of overhead work, falling objects, and authorised access only.

Materials must not be stored where they can fall onto a public way; toe boards and mesh contain small objects.

Liaison with the local authority may be required for hoardings, gantries, or road closures.

Night lighting and reflective markings improve visibility of barriers and scaffold edges.

Security of the scaffold after hours prevents unauthorised climbing and tampering with ties or tags.

Public liability and site security plans should be reviewed when the scaffold footprint or access changes.

The scaffold register records each scaffold's ID, design reference, duty rating, erection date, and inspection history.

Design certificates and engineer's calculations must be kept and referenced in the register.

Inspection reports include defects, corrective actions, and the name of the competent person who cleared them.

Training and licence records for each scaffolder are kept and checked before work allocation.

Maintenance records for plant and components support the decision to remove defective items from service.

Audits check that documentation matches the scaffold on site; discrepancies trigger re-inspection.

Records are retained for the period required by the regulator and are available for inspection.

Digital systems (tags, apps) can support records but must be backed up and accessible on site.

Hazard identification considers the task, the environment, the plant, and the people, including inexperienced workers and visitors.

Risk assessment rates likelihood and consequence, then applies the hierarchy of control to reduce risk so far as reasonably practicable.

Common hazards: falls, falling objects, electrical, manual handling, ground collapse, wind, and public interface.

Residual risk after controls must be acceptable; if not, the work is redesigned or stopped.

Risk assessments are reviewed when the scaffold, the work, or the environment changes.

Consultation with the crew improves hazard identification and control selection.

Records of risk assessments and reviews support compliance and continuous improvement.

Dynamic risk assessment at the start of each shift catches changes not captured in the written assessment.

Scaffold components must be inspected before use and periodically; damaged items are tagged and removed from service.

Couplers, base plates, and ties are consumable items subject to wear; replace rather than repair where integrity is compromised.

Hoists and gin wheels used with scaffolds must be rated, inspected, and operated by competent persons.

Harnesses and lanyards require pre-use checks and periodic inspection by a competent person.

Storage of components must prevent damage and corrosion; stacked planks must be supported and restrained.

Traceability of components (batch, inspection history) supports defect investigations.

Mixing brands or systems requires engineering confirmation of compatibility.

Equipment registers and maintenance logs demonstrate due diligence.

Eliminate the need to work at height where possible; otherwise use a platform with guardrails as the primary control.

Fall arrest systems require anchor points rated for the load, a lanyard of suitable length, and a rescue plan.

Harnesses are a last resort and require training, inspection, and a clear anchor point above the worker where practicable.

Guardrails, mid-rails, and toe boards must be in place before a platform is used; temporary removal requires alternative protection.

Openings and edges must be covered or guarded; covers must be secured and marked.

Fall protection equipment must be compatible; mixing components can reduce performance.

Work positioning systems require a backup where a fall is possible.

Inspection of fall protection equipment before each use is mandatory.

Notifiable incidents include death, serious injury, dangerous incidents such as scaffold collapse, and exposure to a serious risk.

The regulator must be notified immediately; the site is preserved so far as is practicable pending investigation.

Internal incident reports capture what happened, the controls in place, and immediate actions.

Investigations identify root causes, not just immediate causes, and lead to corrective actions.

Corrective actions are tracked to completion and verified for effectiveness.

Lessons learned are shared with the workforce and incorporated into training and procedures.

Records of notifications and investigations are retained.

Cooperation with inspectors is a legal duty; obstruction can lead to enforcement action.

Design limits include maximum height, bay length, lift height, tie spacing, and duty rating; exceeding any limit requires engineering advice.

Height-to-base ratio governs stability; outriggers or wider bases are required beyond specified ratios.

Cantilever scaffolds have defined projection limits; the supporting structure must be checked for the imposed loads.

Ties must be designed for horizontal loads; tie spacing is not a default value and must come from the design.

Bracing (ledger, facade, and plan bracing) must be complete; removing bracing during alteration requires temporary replacement.

Access openings in the scaffold must be designed, not cut ad hoc; the opening reduces capacity.

Foundations must be designed for the total load including wind uplift where applicable.

Any deviation from the design requires documented approval before work continues.

Induction covers site rules, scaffold access, emergency procedures, and reporting of defects.

Task-specific training covers the scaffold system, tools, and inspection requirements.

Licensed scaffolders must hold the class for the work and keep it current.

Competency is verified through records, observation, and assessment.

Refresher training is required when systems, regulations, or roles change.

New workers are supervised until competency is demonstrated.

Training records are kept and reviewed during audits.

Competency gaps are addressed before work is allocated.

Reuse and proper maintenance of scaffold components reduce waste and cost.

Correct storage prevents corrosion and extends component life.

Waste segregation on site supports recycling of packaging and offcuts.

Energy use for lighting and hoists can be managed without compromising safety.

Dust and noise controls protect workers and neighbours.

Spill prevention protects ground and water near the scaffold.

Sustainability measures must not reduce safety controls.

Records of maintenance and disposal support environmental reporting.

QA checks compare the erected scaffold to the design and specification.

Checklists cover foundations, ties, bracing, decking, edge protection, and access.

Non-conformances are recorded and corrected before handover.

Handover documentation confirms the scaffold is fit for its intended duty.

Feedback from users identifies practical issues not captured in design.

Periodic reviews of procedures and training keep pace with changes.

Audit findings drive improvement actions with owners and deadlines.

Effectiveness of improvements is verified through follow-up inspection.