Seismic activity is an ever-present consideration in Australia’s construction industry, particularly for fit-out projects where non-structural elements like glazing partitions must be designed for resilience. Without adequate seismic restraints, glazing partitions can become hazardous during an earthquake, posing risks to occupants and leading to significant property damage. This blog explores the importance of seismic restraints for glazing partitions in fit-out projects, the regulatory framework in Australia, and best practices for ensuring compliance and safety.

Why Seismic Restraints for Glazing Partitions Matter

Glazing partitions are widely used in commercial offices, retail spaces, and public buildings to create flexible, aesthetically pleasing environments. However, in seismically active regions, these partitions can be highly vulnerable. Without proper restraint systems, seismic movements can cause glass panels to break, frames to collapse, and partitions to become projectiles, endangering lives.

Regulatory Framework and Compliance in Australia

Australia adheres to strict seismic design guidelines outlined in:

• AS 1170.4-2024 (Earthquake Actions in Australia): Specifies earthquake load requirements for buildings, including non-structural elements.
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• AS 1288-2021 (Glass in Buildings – Selection and Installation): Covers safety requirements for glazing, ensuring that glass selection and installation consider seismic factors.
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• National Construction Code (NCC): Mandates compliance with seismic safety measures for internal partitions, including glass elements.

For fit-out projects, compliance means integrating seismic design principles from the outset, ensuring that partitions meet load-bearing and movement absorption standards. Ensure you request the right design either from the manufacturer or the design engineer.

Best Practices for Seismic Restraints in Glazing Partitions

1. Flexible Framing and Connection Systems

Utilizing flexible framing systems can absorb movement and prevent glass breakage. Recommended solutions include:

• Seismic-rated channels and head tracks that allow controlled lateral movement.
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• Proprietary system such as Tracklok to provide lateral bracing to the glazing head track.
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• Gasketed joints to accommodate building drift without damaging glass panels.

2. Proper Anchorage and Bracing

Ensuring that glazing partitions are securely anchored to the base structure is essential for stability. This involves:

• Seismic clips and brackets that reinforce partition stability.
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• Top and bottom restraints designed to withstand seismic forces without rigid connections that could cause damage.
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• Seismic Anchors, depending if it's C1 or C2 seismic rating, suitable anchors should be used to mechanical fastened the glazing partition accordingly.

3. Use of Safety Glass and Laminated Glass

Choosing the right type of glass is crucial. Safety considerations include:

• Laminated glass, which remains intact even if shattered, reducing injury risks.
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• Toughened glass, which is more resistant to breakage than standard float glass.

4. Performance Testing and Engineering Certification

Before installation, performance testing ensures that seismic restraint systems meet regulatory standards. Consulting structural engineers such as ArchiEng experienced in seismic compliance helps validate that the design can withstand expected seismic forces.

Conclusion

Seismic restraints for glazing partitions are an essential aspect of fit-out projects in Australia, ensuring compliance with national standards while enhancing safety. Implementing best practices, such as flexible framing, secure anchoring, and appropriate glass selection, minimizes risks and safeguards occupants. By integrating seismic considerations early in the design phase, businesses can create safer and more resilient interior spaces, reducing liability and long-term costs.

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