Building Codes & Building Standards for Timber Construction

A review of standards and codes applicable in Australia for the design of timber construction.

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Standards & Codes

This section contains information on timber design and construction compliance related to fire, acoustics, building classes, environmental impact, thermal performance and quality assurance. Additionally, it specifically covers MRTFC (Multi-Residential Timber Framed Construction) and AS 1684, a four-part Australian Standard covering compliance for timber framing.


Sound is an important issue in residential construction. Sound insulation tends to govern the choice of construction system because of its daily impact on quality of life. The references below provide information on acoustic considerations for timber-framed...

Whether managing sound transmission between dwellings or using timber's natural acoustic qualities to enhance a building, effectively managing sound is an important part of any building design. 

When designing a new or modifying an existing dwelling, all building work must comply with the...

AS 1684 Parts 2 & 3 provide nominal and (where required) specific fixing details for various wind classifications. This requirement is intended to ensure that even if specific fixings are required to resist uplift forces (tie-down connections), other forces and actions due to gravity...

AS 1684 - Parts 2 & 3 require temporary bracing be installed to provide stability to the house so that it can resist wind and construction loads during construction. Lateral forces on the building during construction can be as high or higher than the forces on a completely clad house...

AS 1684.2 clause 9.6.1 states that "continuity of tie-down shall be provided from the roof sheeting to the foundations". For pitched coupled roofs, where there is net uplift that cannot be resisted by nominal nailing alone, the code requires specific tie-down...

Recommendations are provided for extending the use of the Standard to cover wall heights up to 3600 mm.

 

This section contains the following resource:

User Guide 4: External Wall Heights from 3.0 m to 3.6 m

(You...

The tops of internal bracing walls are required to be fixed to the floor, ceiling or roof diaphragm to enable lateral loads (racking forces) which occur on external walls to be evenly distributed into all bracing walls, including internal bracing walls.

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AS 1684 Part 2 and Part 3 provide procedures and prescriptive tie-down details. These include the minimal nominal fixings for roof trusses where there is no net uplift.

This section contains the following resource:

User Guide 6: Roof truss tie-down - this guide...

Learn more about the net uplift forces and tie-down details for ridgeboard and hip rafters.

 

This section contains the following resource:

User Guide 7: Ridgeboard and hip rafter tie-down - acceptable practice for the tie-down of ridgeboards and hip rafters.

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AS 1684 allows for the use of proprietary masonry anchors for fixing bottom plates to concrete slabs. These fixings may be required for resisting the uplift forces at the end of bracing walls and/or the tie-downs of walls due to wind uplift. Tie-down capacity...

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