Spotlight on: AS 1684.2:2021 Residential Timber-Framed Construction in Non-cyclonic areas

Timber continues to be one of Australia’s most widely used building materials for residential construction. From detached homes to renovations and extensions, timber framing remains central to how many homes are designed, manufactured and built across the country.

Behind many of these projects sits AS 1684.2:2021 Residential timber-framed construction, Part 2: Non-cyclonic areas. For decades, the AS 1684 series has helped create a common language for timber framing, supporting consistency across design, manufacturing, certification and construction.

For many practitioners, AS 1684.2 is not just another standard on the shelf. It is often one of the first documents consulted when questions arise about timber framing requirements, bracing systems, structural connections or construction details.

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What is AS 1684.2:2021?

AS 1684.2:2021 applies to the building practice, selection, placement and fixing of structural elements used in timber-framed Class 1 and Class 10 buildings in non-cyclonic areas as defined by the National Construction Code and within the limitations given in Clause 1.4 which relates to wind classifications.

It also applies to alterations and additions within its scope and is used with the relevant supplements.

The standard sits alongside:

• AS 1684.3:2021, Residential timber-framed construction, Part 3: Cyclonic areas

• AS 1684.4:2024, Residential timber-framed construction, Part 4: Simplified - Non-Cyclonic Areas

Together, these standards support timber-framed construction in different wind classifications and building conditions.

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What does AS 1684.2 cover?

A typical house frame is made up of many interconnected elements. Walls support roofs. Floors transfer loads. Bracing helps resist wind forces. Connections help ensure the structure works as a complete system.

AS 1684.2 brings these elements together by addressing:

• Wall framing

• Flooring and decking framing

• Bracing systems (racking and shear forces)

• Roof framing

• Bracing systems

• Fixings and tie-down requirements

• Structural connections and fixings

• Timber member sizing

• Residential construction details

Before using the standard, practitioners need to know the wind classification that applies to the site. That classification influences the framing, bracing and connection requirements used for the project, making it an important starting point rather than a detail to address later. The criteria specified in this Standard are specifically for conventional timber-framed buildings and applicable to single and two storey constructions built within the limits or parameters given in Clauses 1.4.2 to 1.4.10 and Figure 1.2 of this Standard.

While practitioners rely on the document for technical requirements, its broader value lies in creating consistency across the residential building industry.

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Why does this matter?

One of the key functions of standards in construction is to provide a common reference point for design, manufacturing, certification and building practice, helping different project stakeholders work from consistent technical requirements.

Builders, designers, engineers, frame manufacturers and certifiers each play different roles, but they need a shared reference point when interpreting design requirements, construction details and certification expectations. Standards help provide that consistency.

AS 1684.2 supports a shared approach to residential timber framing, helping practitioners navigate structural requirements and construction details with greater confidence. It also helps support clear communication between project stakeholders, from the initial design phase through to construction and certification.

As construction methods evolve and projects become more complex, having recognised standards remains an important part of delivering quality building outcomes.

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Who uses AS 1684.2?

The standard is used throughout the residential construction sector, including by:

• Builders and residential contractors

• Building designers and draftspersons

• Structural engineers

• Building certifiers and surveyors

• Frame and truss manufacturers

• Timber suppliers

• Construction educators and trainers

• Building regulators and compliance professionals

For practitioners designing a new home, manufacturing a timber frame, assessing plans, or working on-site, AS 1684.2 is likely to be a familiar reference.

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The committee behind the standard

Standards do not appear overnight. They are developed through collaboration between industry, regulators, technical experts and other stakeholders.

The AS 1684 series is maintained by TM-010 Timber Structures and Framing, a Standards Australia technical committee that brings together expertise from across the timber and construction sectors. The committee reviews industry needs, emerging issues and technical developments to help ensure standards remain relevant and practical for those using them.

This collaborative process is one of the reasons standards continue to be trusted across the building industry.

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Looking ahead

The residential construction sector continues to evolve through changes in materials, construction methods, engineering practices and building technologies.

As these changes occur, technical committees such as TM-010 review and update standards where required to help maintain their relevance and usefulness to industry. Practitioners should monitor Standards Australia for future updates, amendments and standards development activity affecting timber structures and residential timber framing.

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Access the standard

AS 1684.2:2021 Residential timber-framed construction, Part 2: Non-cyclonic areas is available through the Standards Australia Store and our distribution partners.

For professionals involved in residential timber framing, house construction, building design, certification, frame and truss manufacturing, or structural timber applications, AS 1684.2:2021 remains one of the most important references for residential timber-framed construction in non-cyclonic areas.

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Frequently asked questions

What is AS 1684.2:2021?

AS 1684.2:2021 is an Australian Standard that supports residential timber-framed construction in non-cyclonic areas. It covers areas such as framing, bracing, tie-downs, connections and construction detailing.

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Who uses AS 1684.2?

The standard is commonly used by builders, designers, engineers, certifiers, manufacturers and other professionals involved in residential timber construction.

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What is the difference between AS 1684.2 and AS 1684.4?

AS 1684.2 provides the primary framework for residential timber-framed construction in non-cyclonic areas, while AS 1684.4 provides a simplified pathway for certain applications within those same wind classifications.

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Does AS 1684.2 apply in cyclonic regions?

No. Residential timber construction in cyclonic regions is addressed in AS 1684.3:2021.

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Who develops AS 1684.2?

The standard is developed through Standards Australia's consensus-based process by TM-010 Timber Structures and Framing, which includes representatives from industry, academia, regulators and professional organisations.

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