Updated standard for suspended ceilings – Design and installation

Did you know that there were new standards introduced for the installation of suspended ceilings in Australia earlier this year? AS/NZS 2785:2020 Suspended Ceilings – Design and Installation, replaces AS/NZS 2785:2000 which was introduced over 20 years ago.

What has changed?

There have been huge changes in concrete anchoring technology over the last two decades, as well as important load and capacity regulations standards that were not published at the time the original standard was made in 2000, so the amount of changes to the new standard is quite significant.

The below is just a short snapshot of the changes, so we recommended you download and read through a full copy of the new Standard.

  • The new standard has been brought into alignment with the AS1170 series loading codes, not just in terminology, definitions and notations but it has also ado updated also load combinations as per AS/NZS1170.0.
  • It has a greater focus on life safety-critical applications and earthquakes
  • To be reflective of AS/NZS1170.0, the definition/word ‘action’ has replaced ‘load’
  • Updated to the load combination in Section 2, to be consistent with AS/NZS1170.0.
  • Clarification of the design requirements for suspension hangers
  • Bulkheads are now referred to as a ‘normative’.
  • Separate clause for wind actions and internal pressures
  • Seismic actions have a stronger focus and reference AS 1170.4 or NZS1170.5
  • Clarification of Clause of the design requirements for attachment of partitions to the ceiling and dislodgements, to ensure the safety of the occupants.
  • Includes serviceability limit state load combinations
  • Inclusion of table 2.1.4 that defines the ductility factors to be used for the member and connection design
  • Inter-storey drift has been expanded and clarified
  • Deflection limits now categorised by the ceiling finish such as matt, textured, gloss, brittle, or flush joint system, and includes actions ‘Sag’ or ‘Cracking’.
  • Pre-construction guidelines have been added to ensure all aspects are considered at tender stage
  • AS 5216:2018 Design of post-installed and cast-in fastenings in concrete (and NZS 3101) have been referenced in the standard to reflect the use of fasteners in life safety-critical applications and the tests that the fasteners are required to pass when installed in cracked concrete.
  • Provides information on if partitions need to be attached the ceilings
  • The inclusion of Section 4 Detailing, Ceiling Restraint and Services which provides solutions and information to many situations where ceilings and services interact.
  • Additional information on the requirements for testing by manufacturers and suppliers in the industry

The new standard is an important update for the industry, as it increases the minimum requirements of ceilings to meet the relevant design codes and standards already in place.

Trumark Group offer a range of ceiling systems and components that are engineered and manufactured to comply with all relevant Australian standards and codes. If you would like to discuss these new standard, or have any questions around your ceiling system requirements, please contact our experienced team on 1300 00 50 52 or click here.