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Structural testing


BRANZ structural tests demonstrate how building products and systems perform when subjected to external forces. These include earthquakes or strong winds as well as forces associated with normal use, such as occupancy or external vibrations.

The BRANZ structural test laboratory is purpose-built to evaluate the performance of products and systems used in building construction.

Our expert team provides customised, cost-effective testing services for clients wanting data and information for:

  • product and system development
  • evaluating product performance, including strength and stiffness
  • identifying potential product applications
  • assessing whether products are fit for purpose
  • sharing with the market to increase product awareness
  • consents and demonstrating compliance.

Based on test results, the BRANZ structures team can also provide reports and other documentation to meet individual client needs.

Our testing services

Our structural testing services provide reliable, consistent data to help ensure that your products are fit for use, no matter what the application.

Structural element and connection testing

We use economical small-scale tests (such as load-slip testing of panel fixings) to work out the mechanical properties of fixings (nails, screws and bolts), adhesives, structural members and a wide array of connections.

Prototype and systems testing

We test new or innovative structural systems in our prototype lab (or in the field) to demonstrate Code compliance of walls, floors, roofs and cladding.

Wind pressure testing

Our purpose-built pressure chamber can test the resistance of building envelopes (wall and roof cladding systems) to wind pressures of up to 7 kPa. Most systems can be tested in the 2.4 m square pressure chamber, but larger specimens can be tested using bespoke chambers fixed to the laboratory strong floor.

Shake table testing of building systems

Our shake table can generate single-degree of freedom sinusoidal motions to replicate and monitor the real-time response of building systems to seismic forces specified under the Building Code.

Non-structural component testing

We can statically and dynamically test the mechanical properties of non-structural components. Static tests include rail testing, connection testing and other component testing. Our shake table simulates earthquake forces to dynamically test the response of components such as:

  • suspended ceilings
  • mechanical plant and components
  • partition systems
  • cladding
  • sensors.

Impact resistance

We conduct soft-body and hard-body impact testing of wall linings, glazing, claddings, doors (including lift shaft landing doors) and security grates. This determines their resilience and indentation characteristics when they are subjected to different impact loads.

Fast-response field testing

We carry out field testing of structures and structural elements to evaluate strength and stiffness, earthquake resistance and in situ connections (including bonds in masonry and brickwork). We can also determine the serviceability of building and floor systems impacted by forces associated with normal use (such as occupancy or external vibrations).

Enquire about structural testing services

If you would like to discuss getting your product tested, contact us by: