Seismic Bracing

Seismic Bracing Systems offer a simple and engineered solution to brace and secure non-structural building services, improving the resilience and safety of buildings in the event of an earthquake. 

Earthquakes cause ground vibrations that shake buildings and this shaking generates movements and stresses within the building structure, as well as in all the building’s non-structural components such as the mechanical services, electrical containment, ventilation ductwork, hydraulic pipes, and fire protection systems.

Zip-Clip Atlas bracing solutions work by transferring seismic forces to the supporting structural elements through cables in tension. In general, Zip-Clip braces can be fixed to slabs, columns, beams, etc. as per the anchor design specifications.


Zip-Clip Atlas seismic brace systems are colour coded to allow easy field identification, each colour representing a different increasing load-bearing capacity.

  • The R-System range of seismic braces is designed for light-duty brace applications.
  • The B-System range of seismic braces is designed for light/medium duty brace applications.
  • The GY-System range of seismic braces is designed for medium/heavy duty brace applications.

All systems can be used as a seismic brace solution for new or retrofit installations to non-structural components.

For details on the capacities of the different systems request a copy of our latest Design Guide by emailing seismic@zip-clip.com.



Strength tested:

  • Complying with NZS 4219: 2009
  • Following ASCE-19

Seismically tested to:

  • IEEE 344-2013, standard for qualification of equipment for nuclear power generating stations.
  • ICC ES AC156, acceptance criteria for seismic certification by shake table testing of non-structural components.

Third-party certification is available for strength and seismic tests.



Each brace comes complete with:

  1. Seismic anchor bracket – steel, geomet finish.
  2. A selected length of steel wire rope – 7×7, 1960N/mm² grade for R-System and B-System and 7×19, 1960N/mm² grade for GY-System.
  3. Wire locking device – Zinc alloy (ZAMAC5).
  4. Retrofit bracket – steel, geomet finish.
  5. Restraint washer – steel, geomet finish.
  6. Additional PVC sleeve.

1.  Attach seismic bracket to ceiling structure with appropriate anchor as per manufacturers instructions, and structural engineers recommendations.

2.  Fit retro-fit bracket to existing primary support. Ensure seismic restraint washer is included, and bracket orientation is in-line with the brace.

3.  Pass wire rope through the Zip-Clip seismic locking device.

4.  Feed on additional PVC sleeve.

5.  Loop wire through the available hole in the retrofit bracket and position PVC sleeve against the through-hole.

6.  Feed wire back into Zip-Clip seismic locking device.

7.  Apply tension by hand.

8.  Coil excess wire and secure to the main brace, if necessary trim excess leaving 150 mm tail.



• Braces should always be installed as opposing pairs.
• Wire rope should not be in contact with anything along the brace length.
• Brace angles from the horizontal should not exceed 60 degrees.
• Anchor brackets should be installed in-line with the brace.
• Square plate washers should be utilised to secure retrofit brackets along with restraint washers where available.
• Where no square washer is available, a seismic restraint washer must be used along with the
retrofit bracket.


Seismic design standards require that non-structural services must be braced at regular intervals. Appropriate brace spacings must be determined by a qualified structural engineer.


Product Code Description Pack Qty
IEEE2R 2 meter R-System seismic brace 2
IEEE3R 3 meter R-System seismic brace 2
IEEE5R 5 meter R-System seismic brace 2
IEEE2B 2 meter B-System seismic brace 2
IEEE3B 3 meter B-System seismic brace 2
IEEE5B 5 meter B-System seismic brace 2
IEEE2GY 2 meter GY-System seismic brace 2
IEEE3GY 3 meter GY-System seismic brace 2
IEEE5GY 5 meter GY-System seismic brace 2

Longer lengths available on request


By Product Application