HIA AS 1684.2 2021 Residential Timber Framed Construction Part 2

AS 1684 Part 2 comprises 9 sections along with 10 Informative and Normative Appendices. Additionally, it offers timber span tables supplements tailored to different wind classifications, timber types, and stress grades.

Here's a breakdown of the 9 sections:

1. Section 1 outlines the scope, general requirements, and references to other standards, covering topics such as durability, timber stress grades, and size tolerances.
2. Section 2 defines terminology and loading requirements relevant to timber members and construction methods, including span and spacing considerations.
3. Section 3 details site preparation requirements, including site clearing, drainage, sub-floor support, and determination of pad footing sizes.
4. Section 4 addresses timber-framed floor construction techniques, including jointing methods applicable to decks and verandahs.
5. Section 5 covers the installation of strip and structural plywood, particleboard flooring, and timber decking.
6. Section 6 provides building practices for conventionally framed timber walls, encompassing lintels, window trimmers, and non-loadbearing walls.
7. Section 7 specifies design and building practices for conventionally framed roofs, including various roof types, ceiling framing, and roof supports.
8. Section 8 delineates bracing requirements for sub-floors, walls, and roofs, including temporary and permanent bracing methods.
9. Section 9 specifies fixing requirements between structural components and materials, detailing methods for typical load actions from sub-floor to roof.

The 10 Informative Appendices include:

A. Typical construction mass requirements for supporting buildings.
B. Durability requirements for timber components.
C. Information on using direct linear interpolation for table values.
D. Example of determining foundation bearing area and bracing distribution.
E. Information on moisture content and shrinkage rates for timber.
F. Alternative method for determining racking forces for hip and gable roofs.
G. Properties of common timber species found in Australia.
H. Advice on handling and storing timber prior to construction.
I. Typical fixing details for collar ties in conventionally pitched roofs.
J. Generic guidance on building practices for Engineered Wood Products (EWPs).