Uncontrolled partial collapse of building under demolition (22 January 2025)

During licensed demolition activities, an uncontrolled partial collapse of multiple levels of concrete slabs occurred. This led to the instability of connected scaffold. This posed a significant risk of falling objects within the worksite as well as onto public footpaths, adjacent streets and nearby premises. No injuries were sustained in the incident.

A Yellow excavator removing loose scarrolding near a road, with a new building in the background
Excavator removing loose scaffold
A main road, with the damage building and scaffolding being removed. The damage building is enclosed by a black fence. In the background is a new building.
Site after partial scaffold removal.
                                          

Safety information

Consider ‘reasonably practicable’ control measures to manage the risks associated with an uncontrolled structural collapse and falling objects during demolition works.

You should ensure that:

  • demolition works are completed by trained and licensed PCBUs in accordance with WHS legislation
  • the licence holder notifies SafeWork NSW at least five calendar days before starting any demolition work
  • the licence holder, in consultation with a competent person and all relevant stakeholders, prepares a site-specific demolition control plan before work begins
  • the demolition plan includes the sequence of demolition activities and identifies structural components
  • workers and plant operators engaged in demolition follow the demolition sequence as detailed in the demolition plan
  • fit for purpose plant and structures are selected when planning the demolition work
  • the demolition licence holder prepares a site-specific Safe Work Method Statement (SWMS) before starting demolition work
  • scaffold is purpose-designed by a suitably competent person (such as a structural engineer) and scaffold is erected, altered and dismantled by workers with the appropriate scaffolding high risk work (HRW) licence
  • demolition workers complete their mandatory training by 1 March 2025.

Related guidance material

Further information

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