TM Consultants offer specialist engineering knowledge in designing seismically resilient non-structural systems, including building services

Our seismic specialist team can engineer all relevant non-structural systems for any building

Seismic restraint design process:


Determine earthquake demand and calculate the restraint forces for all linear, floor-mounted and suspended components (NZS 4219:2009).


Design a restraint system for each component that has sufficient capacity to resist seismic forces. A typical restraint system consists of one or more anchor points, braces or supports and connections to the building component.

NZS 4219:2009 requires the design and installation of a restraint system for each component that has sufficient capacity to support and resist the forces determined in the earlier design steps.


Attach all components and associated supports and restraints to the supporting structure so that seismic forces are properly transferred to the structure.

Design services

  • Anchors, fixings and fasteners
  • Braces and supports
  • Restraint of pipe systems, HVAC, electrical, tanks, sprinkler systems
  • We design throughout New Zealand and Australia

Planning & coordination

  • Clearances between components and services
  • Future flexibility
  • Post fire performance (passive fire restraint)
  • Full 3D Revit BIM service and scheduling

We have spent many hours with suppliers and installers to ensure each project gets visually unobtrusive and readily constructible products, with maximum performance at minimum cost


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