Seismic design of suspended ceilings: What you need to know about the National Construction Code, AS 1170.4 and AS/NZS 2785

The failure of suspended ceilings is one of the most frequently reported types of non-structural damage to buildings after seismic events. During an earthquake, debris from a failing ceiling can cause injury or death and block off exits, preventing people from safely escaping the building. As seismic compliance is first and foremost about protecting lives, the design of non-structural building components for seismic loads is an area that should not be overlooked.

Seismic Design of Suspended Ceilings: What you need to know about the National Construction Code, AS 1170.4 and AS/NZS 2785 examines the impact of earthquakes on non-structural building components and the standards and regulations governing the seismic design of suspended ceilings. In particular, we highlight the key seismic requirements in the National Construction Code and AS 1170.4, and the 2020 changes to AS/NZS 2785. Lastly, we briefly discuss how building systems are tested for seismic compliance.

In Australia, the Siniat brand is synonymous with complete lightweight solutions, and it is the only manufacturer to supply full wall and ceiling systems to the construction market. Metal framing components, compounds and standard and specialty plasterboards are manufactured locally. A range of acoustic boards is also supplied. Siniat offers a range of design solutions for suspended ceiling systems to comply with the seismic design requirements of the particular project. Each solution has been tested for performance and compliance.

Download this whitepaper for a closer look at the seismic design requirements for suspended ceilings.