Mechanical Demolition SWMS
Mechanical demolition of buildings using excavator with hydraulic shears, hammers, processors. Sequenced top-down or hi-reach demolition, dust suppression, structural collapse zones, debris removal.
SWMS variants reference your state’s WHS legislation. Instant download after payment.
Mechanical demolition involves the planned, sequenced destruction of structures using powered mobile plant — typically tracked excavators fitted with hydraulic shears, pulverisers, processors, or hammer attachments, and in taller works, high-reach demolition rigs. The work generates extreme structural collapse risk, uncontrolled debris fall, respirable crystalline silica, and significant powered-plant interaction zones. Under the WHS Regulation 2025, mechanical demolition of load-bearing structures, structures over 6 metres, and work involving powered mobile plant in a collapse zone is High Risk Construction Work under Schedule 1, mandating a Safe Work Method Statement before work commences. The SWMS must be developed in consultation with workers, kept available for inspection by the regulator, and reviewed whenever the sequence, plant, or structural condition changes. This document discharges the PCBU's duty under section 19 of the WHS Act and regulations 291–299 covering construction work and demolition notification.
Hazards identified
7 hazards covered, sorted by priority.
Crushing fatalities, multi-storey debris cascade, plant burial, and Category 1 reckless conduct prosecution against the PCBU and supervisor
Operator fatality from cabin crush, attachment ejection, and breach of regulation 215 powered mobile plant duties
Accelerated silicosis, lung cancer, chronic obstructive pulmonary disease, and notifiable workplace exposure standard breach
Penetrating head injuries, fatal strikes to ground crew, and damage to adjoining properties or public footpaths
Airborne fibre release, mandatory site shutdown, mesothelioma latency exposure, and prosecution under asbestos regulations 419–434
Arc flash fatality, gas explosion, flooding, and notifiable incident under sections 35–38 of the WHS Act
Run-over fatalities of spotters, dogmen, and truck drivers within the slewing radius and blind-spot envelope
Control measures
Hierarchy-of-controls order: elimination → substitution → isolation → engineering → administrative → PPE.
- 1Elimination — Eliminate manual workers from the collapse zone and slew radius by executing demolition entirely with remote/cab-operated plant and a hard-barricaded exclusion perimeter set at 1.5× structure height.
- 2Elimination — Remove all hazardous materials (asbestos, PCBs, residual chemicals, fuels) via licensed soft-strip before mechanical demolition begins, verified by clearance certificate.
- 3Substitution — Substitute hydraulic shears and pulverisers for percussive hammers wherever feasible to reduce vibration, dust generation, and uncontrolled fragment ejection.
- 4Substitution — Use high-reach demolition excavators instead of explosive or top-down manual deconstruction on structures above 20 metres to keep operators outside the collapse footprint.
- 5Engineering — Implement continuous water suppression via fixed misting cannons and boom-mounted spray bars maintaining visible damp surfaces per AS 2436 dust control requirements.
- 6Engineering — Install ROPS/FOPS certified cabs with attachment guarding, polycarbonate front screens, and reinforced cab roofs rated to the falling object risk identified in the structural engineer's sequence plan.
- 7Administrative — Follow the engineer-endorsed demolition sequence plan with daily pre-start verification of structural stability, exclusion zone integrity, and updated hazard register before plant start-up.
- 8Administrative — Operate only with HRWO-licensed plant operators, demolition supervisors holding the unrestricted demolition licence, and trained spotters maintaining two-way radio contact and positive communication protocols.
- 9PPE — Issue P2/P3 respirators, impact-rated hard hats, Class 5 high-visibility clothing, Class 1 eye protection, steel-capped boots, and Class 5 hearing protection for any worker entering the active zone.
- 10PPE — Provide cut-resistant gloves and forearm protection for ground crews handling sheared reinforcement and processed debris during loadout and segregation activities.
Applicable Codes of Practice
Mandates sequenced demolition planning, exclusion zones, engineer involvement for load-bearing structures, and SWMS content specific to mechanical demolition method.
Sets the technical demolition standard including survey requirements, sequencing, propping, and controls referenced by the WHS regulator as the accepted industry benchmark.
Governs powered mobile plant duties under regulations 213–216 including operator competency, attachment certification, and exclusion of persons from operating zones.
Binding exposure limit under regulation 49 triggering air monitoring, health surveillance under regulation 368, and engineering dust controls during concrete processing.
High-Risk Construction Work triggered
Mechanical demolition by definition removes load-bearing slabs, columns, beams, and shear walls in sequence, meeting the Schedule 1 trigger from day one of works.
Urban demolition sites routinely interface with active road corridors during debris haulage, hoarding installation, and lay-down — engaging traffic-management duties under Schedule 1.
PCBUs must prepare, consult workers on, and retain this SWMS for at least two years post-incident under regulation 299; failures attract Category 1–3 offences with penalties that are substantial and indexed annually under the prevailing WHS penalty schedule.
Who this is for
- →Licensed demolition contractors on commercial and industrial projects
- →Principal contractors managing tier 1 redevelopment sites
- →Plant operators running excavator-mounted shears and processors
- →WHS managers overseeing high-reach demolition programmes
What you receive
- ✓Editable DOCX template — Microsoft Word compatible
- ✓State-specific WHS legislation schedule (NSW/VIC/QLD/SA/WA/TAS/NT/ACT)
- ✓Hazard register with risk ratings + hierarchy-of-control mapping
- ✓Worker sign-on register, pre-start checklist, and incident escalation flow
Worked example
On a six-storey commercial strip-out and demolition project in a mixed-use precinct, the demolition supervisor convenes the Monday pre-start brief at 6:30am with the excavator operator, two spotters, a water-cart driver, and the loadout crew. The supervisor opens this SWMS on a ruggedised tablet and walks through the hazard register against today's task: pulverising the level-three slab edge using a 50-tonne high-reach excavator with rotating pulveriser. The team confirms the engineer's sequence drawing matches the current structural state — yesterday's column drops are verified stable. The supervisor highlights control 1 (1.5× height exclusion zone, today set at 32 metres), control 5 (misting cannon repositioned to upwind corner), and control 7 (daily structural verification signed by the demolition engineer at 6:00am). Each worker signs onto the SWMS digitally, including the new dogman who receives a verbal walk-through of the slew radius and positive-communication protocol. Mid-morning, the operator radios that he has exposed an unexpected services penetration in the slab. Work stops, the SWMS is reopened, hazard 6 (unidentified services) is reviewed, the services locator is recalled to site, and the amendment is recorded against the SWMS revision log before any further attachment engagement resumes.
Related legislation
- WHS Act 2011 (model)
- WHS Regulation 2025
- AS 2550 — Cranes, hoists and winches; AS 1418 series