Mast Climbing Work Platform (MCWP) SWMS
SWMS variants reference your state’s WHS legislation. Instant download after payment.
A mast climbing work platform is a machine, a scaffold and a structure at once, and it fails in ways none of those alone would suggest. The mast is a slender column held upright by ties to the building. Its stability is not a property of the machine — it is a property of the **tie design**, which depends on the structure the ties are fixed to, the mast height, the platform loading and the wind. A tie fixed into a masonry infill panel, an unverified precast unit or green concrete is not a tie. The machine cannot tell the difference, and neither can the operator.
**The second failure mode is overloading, and it is quiet.** The platform has a rated capacity, but it also has a **load distribution diagram** — the load must sit where the design assumed, and a cantilever extension carries a much lower rating than the main deck. A platform loaded to its total rated capacity with all of it on one end, or on a cantilever, can be catastrophically overloaded while the total still reads compliant. Following trades load these machines with brick packs, facade panels and render, and they read the total, not the diagram. This SWMS covers erection, tying, use, climbing, alteration and dismantling — base and foundation, mast sections, ties, drive unit, platform and cantilever or bridging extensions — and the loading and use of the platform by following trades. Authored for New South Wales. Regulator: SafeWork NSW.
Hazards identified
14 hazards covered, sorted by priority.
The machine and everybody on it comes off the building
Overturn from a foundation assessed for vertical load but not for overturning moment
Fall from the platform, the mast during erection, or an unprotected landing
Catastrophic overload while the TOTAL load still reads compliant
Electrocution — a 3 m guardrail post carried upright is a conductor
Uncontrolled descent of a loaded platform
Crushing between the rising platform and a projection, balcony or scaffold
Head or crush injury to persons below across the full working height
Tie overload from sheeting, stacked material or signage nobody designed for
A tie removed or a cantilever added by someone who did not do the calculation
Fall through the gap between platform and structure at a landing
A following trade operating a machine they are a passenger on
Crush or dropped-load injury at the base during crane or telehandler work
Musculoskeletal injury handling mast sections and platform components
Control measures
Hierarchy-of-controls order: elimination → substitution → isolation → engineering → administrative → PPE.
- 1Require an engineer-designed tie arrangement verified against the ACTUAL structure — a tie into masonry infill, an unverified precast panel or green concrete is not a tie.
- 2Install ties at the spacing, level and fixing type on the erection drawing, verify concrete strength before any tie is loaded, and proof test where the fixing is not a proprietary tested arrangement.
- 3Never omit, relocate or substitute a tie to suit a window, a facade panel or another trade without the engineer's written authorisation, and never climb the mast beyond the tied height.
- 4Assess the foundation against the actual base reactions — which include overturning moment, not just vertical load — and exclude excavation and service work from the zone of influence of the base for the life of the machine.
- 5Display the LOAD DISTRIBUTION DIAGRAM at every access point and at the controls, not just the total rated capacity, and induct every following trade to it before they load the platform.
- 6Mark cantilever and bridging extensions with their own — much lower — rating, and keep overload detection functional and never overridden.
- 7Do not use the platform as a materials store, and remove material before climbing.
- 8Assess overhead line clearance against the machine's FINAL height, not its erected height on day one, with a safety observer during erection and every climb.
- 9Maintain the manufacturer's inspection and maintenance regime, test the safety device at the specified frequency and record it, and tag the machine out of service on any unusual noise, jerk, slip or fault.
- 10Survey the full travel path against the facade before the first climb, identify every projection, balcony, awning and service, and maintain the platform-to-structure gap within the manufacturer's limit.
- 11Prohibit sheeting, banner mesh, shade cloth or signage on the mast or platform unless the tie design accounts for the wind actions it creates, and park the machine at its out-of-service position when the wind limit is approached.
- 12Lock the drive controls to authorised operators only, remove the key when unattended, and induct following trades that they are passengers and not operators.
- 13Ensure all workers hold a current White Card (CPCCWHS1001), with erection and dismantling by persons trained by the manufacturer or equivalent, and rigging/dogging licences where required for component delivery.
- 14Consult workers on WHS matters affecting them per Section 47 of the WHS Act 2011 (NSW), record the consultation, and review whenever the machine, height, tie arrangement, loading or facade changes, after any incident, or at minimum every 12 months.
Applicable Codes of Practice
The benchmark for fall control during erection, use, alteration and dismantling, and at every landing and access point.
The benchmark for plant risk management, guarding, isolation and safe use, and for design and item registration duties.
The benchmark for erection, tying, use, loading, inspection, alteration and dismantling, including tie design and load distribution.
The basis for assessing wind loading on the mast, platform and any attached sheeting, and for the tie forces that result.
Harness, lanyard and anchorage selection and use during erection, alteration and dismantling.
The benchmark for construction-phase risk management, exclusion zones beneath the machine and coordination with following trades.
High-Risk Construction Work triggered
Erection, climbing, alteration and dismantling are carried out on a mast and platform well above 2 m, and every landing is a transfer across a gap at height.
The mast at full height and the platform travel path bring the machine within reach of overhead lines and facade-mounted building services, and the machine has its own temporary electrical supply.
Cranes and telehandlers deliver and remove mast sections and platform components at the base, and the platform itself is powered plant moving in the work area.
Erection, use and dismantling of a mast climbing work platform is high risk construction work under Section 291 of the WHS Regulation 2025 (NSW), so a SWMS must be prepared before work commences (Section 299), kept readily accessible, reviewed as necessary (Section 302), and given to the principal contractor if one is appointed. An MCWP is plant under Chapter 5 requiring **design registration and item registration**, and the duties include ensuring it is used within its design limits, inspected and maintained, and not altered without the manufacturer's or a competent engineer's authorisation. Part 4.4 requires the risk of a fall to be managed at every stage including erection and dismantling. Energised electrical work is separately prohibited under Part 4.7 Division 4, sections 154 and 157 unless de-energisation is not reasonably practicable. A collapse, a fall from height, an entrapment or an electrical contact is a notifiable incident under Sections 35–38 and is prosecuted as a Category 1 or Category 2 offence, with the most serious breaches carrying imprisonment for individuals.
Who this is for
- →Access and scaffolding contractors erecting, tying, climbing, altering and dismantling mast climbing work platforms.
- →Facade, render, bricklaying and cladding contractors using an MCWP as their working platform — and loading it.
- →Principal contractors responsible for MCWP set-up, foundation, tie approval and coordination of following trades.
- →Structural engineers designing or verifying tie arrangements and base foundations against the actual structure.
- →WHS managers and HSE advisors responsible for registered plant, platform loading discipline and wind management.
What you receive
- ✓A complete, editable Safe Work Method Statement authored for New South Wales — the WHS Act 2011 (NSW), the WHS Regulation 2025 (NSW) and SafeWork NSW as regulator.
- ✓14 identified hazards with initial and residual risk ratings on a 5x5 matrix, each with controls ordered through the full hierarchy — eliminate, engineer, administrative, PPE.
- ✓The tie control set built on the fact that mast stability is a property of the TIE DESIGN, not of the machine — and that a tie into masonry infill or green concrete is not a tie.
- ✓The load distribution control set: the diagram displayed and enforced, cantilevers marked with their own much lower rating, and the recognition that a compliant total can hide a catastrophic overload.
- ✓Foundation controls assessed against overturning moment, not just vertical load, with exclusion of excavation from the zone of influence for the life of the machine.
- ✓Wind controls covering sheeting, signage and stacked material — the additions that invalidate a tie design nobody recalculates.
- ✓The full high risk construction work breakdown — falls over 2 m, energised electrical and powered mobile plant — with the reason each category applies, plus the Chapter 5 registration duties.
- ✓A PPE matrix mapping each task to the required equipment and Australian Standard, emergency procedures covering mast movement, entrapment and rescue from a stranded platform, and a worker sign-on table.
- ✓Microsoft Word (.docx) format, unbranded, editable fields for PCBU, ABN, site, prepared by, reviewed by, approved by and review date.
Worked example
A bricklaying gang is working off an MCWP on a nine-storey job. The platform is rated at 1,500 kg and the ganger knows it, because it is written on the plate at the gate. They land four brick packs from the telehandler — about 1,200 kg — and it is under, so everyone is happy. What is not on the plate at the gate is that three of those packs are sitting on the cantilever extension at the eastern end, which is rated at 300 kg, because that is where the telehandler could reach. The total says compliant. The extension is at four times its rating. Nobody has done anything a reasonable person would call reckless; they read the number that was in front of them. This SWMS puts the load distribution diagram at every access point and at the controls rather than the total alone, marks the cantilever with its own rating, and inducts every following trade to the diagram before they load anything — because the trade that overloads the platform is almost never the trade that erected it.
Related legislation
- Work Health and Safety Act 2011 (NSW) — Section 19 primary duty of care; Section 47 consultation; Sections 35–38 notifiable incidents.
- Work Health and Safety Regulation 2025 (NSW) — Section 291 (high risk construction work) and Section 299 (preparation and content of a SWMS), with review under Section 302.
- Work Health and Safety Regulation 2025 (NSW) — Chapter 5 (plant): design registration and item registration for an MCWP, and the duty to use plant within its design limits and not alter it without authorisation.
- Work Health and Safety Regulation 2025 (NSW) — Part 4.4 (falls) at every stage including erection and dismantling, and Part 4.7 (electrical) including the prohibition at Division 4, sections 154 and 157.
- AS 2550.16 (Safe use — Mast climbing work platforms), AS 1170.2 (Wind actions) and AS/NZS 1891.1 and 1891.4 (fall-arrest systems).
Frequently asked questions
The machine is rated at 1,500 kg and we're loading 1,200 kg. Why is that a problem?
Because the rated capacity is only half the instruction. The platform also has a load distribution diagram, and a cantilever or bridging extension carries a much lower rating than the main deck — often a fifth of it. A platform loaded to 1,200 kg with 900 kg of it on a 300 kg cantilever is catastrophically overloaded while the total reads compliant. Nobody has to be reckless for this to happen; they just read the number on the plate. That is why the diagram goes at every access point and at the controls, and why every following trade is inducted to it before they land anything.
Can we move a tie to get a facade panel in?
Not without the engineer's written authorisation and re-inspection. The mast does not stand up because it is a strong machine — it stands up because the ties transfer wind and overturning load into the building at the spacing and capacity the engineer calculated. Removing or relocating one changes the whole system, and the person who needs the panel in has not done that calculation. If a tie genuinely conflicts with the facade sequence, that is a design problem to solve before erection, not a decision to make on the day with a rattle gun.
Do we need an engineer if we're tying into a concrete frame?
Yes, and the frame is precisely why. The engineer's job is not to bless the tie in the abstract, it is to verify the ACTUAL structure at the ACTUAL fixing location can carry the tie force — which means confirming the concrete has reached strength, that the element is structural rather than an infill or an unverified precast panel, and that the fixing has the edge distance and embedment its rating assumes. Green concrete looks identical to cured concrete, and the machine cannot tell the difference. Neither can the operator.
Can we hang shade cloth or signage off the platform?
Not unless the tie design accounts for the wind actions it creates. This is the same trap as encapsulating a scaffold: sheeting converts an open lattice into a surface, and the wind force the ties must carry rises by an order of magnitude. The ties were designed without it. Any sheeting, banner mesh, shade cloth or signage on the mast or platform requires the engineer to reassess against AS 1170.2 and specify the revised tie arrangement. Unauthorised attachment is removed on sight, and the machine is inspected after every high wind event.