We simplify the complex – working alongside your wider project team, we design, model and coordinate seismic restraints to non-structural elements; to produce solutions that are safe, economical and simple to construct.

Non-structural elements comprise up to 70% of a building’s capital value. Earthquake damage to these elements can result in some buildings being declared economic losses, even when the structure itself is not badly damaged. Damage to non-structural elements is a significant risk to building occupants and affects whether the building can be occupied following an earthquake.

The seismic restraint of non-structural building elements (an important aspect of earthquake engineering) is a requirement of the New Zealand Building Code but has historically been poorly executed, resulting in unsatisfactory safety and cost outcomes after moderate to large earthquakes.

Our building seismic restraint service removes a traditional stumbling block in coordination between the architect, engineer, service engineer and contractor – making it easier to deliver safe, economical and simple seismic restraint. Our holistic approach to the restraint of non-structural elements allows us to develop solutions alongside the wider project team during the design phase, to produce better quality outcomes including:

  • Improved value: Solutions that are efficient, flexible, easy to source and install
  • Reduced risk: The seismic, cost and programme risk is addressed directly by the design
  • Improved collaboration: Early involvement of seismic restraint design enables the team to integrate into the design process and develop holistic solutions
  • Improved sustainability: We reduce waste by improving seismic resilience of non-structural elements
  • Innovative designs: We constantly innovate to bring the best technology into our seismic service delivery, including bespoke software and design tools
  • Greater certainty: Including non-structural elements in our drawings relieves subcontractors from design responsibility
  • Compliance with the Building Code: The drawings issued give the contractor team confidence that the non-structural components will be installed in line with the Building Code.
Coordinated seismic restraint model that can be used to manage cost risk and improve construction phase efficiency.
Architecturally sympathetic seismic restraint solutions developed holistically with the wider design team.
Image of an inadequately restrained non-structural element following an earthquake.
Coordinated seismic restraint model that can be used to manage cost risk and improve construction phase efficiency.

Our People

Andrew Baird

Senior Associate – Structural Engineering

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Jasin Long

Associate Seismic Restraint Engineer

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Kam Weng Yuen

Business Director – Business & Practice Development Structural Engineering

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Take a deeper dive into what we offer


Combining real-time earthquake information with knowledge of your assets, to help you respond quickly and efficiently. 
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Earthquake engineering

We have decades of experience in the world’s seismic hot spots - from the assessment of earthquake-prone buildings in New Zealand to the development of seismic codes in Asia and large-scale retrofit programmes in Europe.
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Our brochure

We're committed to building strong and lasting relationship by responding to the needs and aspiration of our clients and their communities. 
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Performance-based earthquake engineering

Situated in one of the most seismic regions of the world is Santiago, Chile. With its large collection of tall buildings set against the backdrop of the Andes Mountains, it was a superb location for the 16th World Conference on Earthquake Engineering.

Matt Fox explains

Seismic risks in ASEAN?

At 6:50am on 21 November, a magnitude 6.1 earthquake occurred near the Thailand-Laos border. Having lived in Christchurch through the 2010-2011 earthquake sequence, I have experienced thousands of earthquakes, but this was the first time I had felt one outside of New Zealand...

Andrew Baird explains

Building Better – the importance of non-structural elements in earthquakes

Non-structural seismic specialist Dr Andrew Baird reflects on the growing importance of ensuring non-structural elements are considered in earthquakes, given his first hand experience.

Andrew Baird explains