Building classes
Classes of Building |
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Class 1 |
Class 1 buildings are dwellings. |
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Class 1a |
One or more buildings forming a single dwelling like:
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Class 1b |
One or more buildings which together form:
A Class 1b building cannot be located above or below another dwelling or another building class (except for a private garage). |
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Class 2 |
A building containing two or more sole-occupancy units, each being a separate dwelling. |
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Class 3 |
Class 3 buildings are residential buildings other than Class 1 or 2. These are long-term or transient living accommodations for unrelated people. These include the following:
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Class 4 |
A Class 4 building is the only dwelling or residence within any Class 5, 6, 7, 8 or 9 buildings. |
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Class 5 |
An office building used for professional or commercial purposes, except for buildings of Class 6, 7, 8 or 9. Examples include:
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Class 6 |
Buildings that directly sell goods by retail or supply services to the public, such as:
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Class 7 |
Class 7a |
A building which is a car park. |
Class 7b |
The following buildings are classified under Class 7b:
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Class 8 |
These are process-type buildings such as:
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Class 9 |
A building of a public nature. |
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Class 9a |
Healthcare buildings in which occupants are either:
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Class 9b |
Assembly buildings used for social, theatrical, political, religious or civil purposes. The following are examples of Class 9b buildings:
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Class 9c |
An aged care building. An aged care building is defined as a residential accommodation for elderly people who are:
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Class 10 |
A non-habitable building or structure. |
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Class 10a |
A private garage, carport, shed or the like. |
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Class 10b |
Structures like:
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Class 10c |
A private bushfire shelter. |
Behaviour of structural materials
Fundamental Types of Loading
Structural members behave in a particular manner in response to different types of forces. Examining fundamental types of loading will explain how these individual structural components react upon resisting and transmitting loads.
The graphic above shows how fundamental types of loading affect structural components.
- Compression – loading condition that compresses the material together. This loading applies to footing, columns, retaining walls, and truss members.
- Tension – loading condition that, as opposed to compression, stretches or pulls the member apart. This loading applies to truss members and connections.
- Shear – loading condition that causes the member to slide apart along a plane that is parallel to both end forces as shown. This applies to beams, slabs, columns, roof trusses, wind bracings, footing, and retaining walls.
- Torsion – loading condition that causes twisting in a structural component. This applies to beams and slabs.
- Bending – loading condition that causes the member to experience compression on one side and tension on the other. This loading applies to all structural members mentioned excluding roof truss and wind bracings.
Australian Standards (AS) and Australian/New Zealand Standards (AS/NZS)
Some of the AS and AS/NZS standards and codes relevant to building design and structural integrity are shown in the table below:
Standard |
Title |
AS 4100:2020 |
Steel Structures |
AS/NZS 5131:2016 |
Structural Steelwork – Fabrication and erection |
AS 3600:2018 |
Concrete Structures |
AS 4773.2:2015 |
Masonry in small buildings, Part 2: Construction |
AS 2870-2011 |
Residential slabs and footings |
AS/NZS 2327:2017 |
Composite structures—Composite steel-concrete construction in buildings |
AS 4440-2004 |
Installation of nail-plated timber roof trusses |
AS 1684-2010 |
Residential timber-framed construction |
Other Standards
Organisation |
Standard |
Title |
ASTM International (formerly American Society for Testing and Materials) |
ASTM E72-2015 |
Standard Test Methods of Conducting Strength Tests of Panels for Building Construction |
ASTM E695-2003 |
Standard Test Method of Measuring Relative Resistance of Wall, Floor and Roof Construction to Impact Loading |
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National Association of Steel-Framed Housing (NASH) |
NASH Standard 2014 |
Steel Framed Construction in Bushfire Areas (incorporating amendment A) |
Standards Australia with International Organisation for Standardisation (ISO) |
AS ISO 9239 Part 1 (2003) |
Reaction to fire tests for floorings — Determination of the burning behaviour using a radiant heat source |
Cement Concrete and Aggregates Australia (CCAA) |
TN 61 |
Cement Concrete and Aggregates Australia — Technical note — Articulated walling |
International Organization for Standardization (ISO) |
ISO 2103:1986 |
Loads due to use and occupancy in residential and public buildings |
Government building and construction legislation and regulations
State/Territory |
Legislations/Regulations |
Queensland |
Building Act 1975 Building Regulation 2006 Queensland Building and Construction Commission Act 1991 Building Industry Fairness (Security of Payment) Act 2017 Queensland Development Code |
New South Wales |
Home Building Act 1989 Home Building Regulation 2014 Civil and Administrative Act 2013 Civil and Administrative Tribunal Rules 2014 Building and Construction Industry Security of Payment Act 1999 Contractors Debts Act 1997 |
Tasmania |
Building and Construction Industry Security of Payment Act 2009 Building Act 2016 Residential Building Work Contracts and Dispute Resolution Act 2016 |
Northern Territory |
Building Act 1993 Building Regulations 1993 Building (RBI and Fidelity Fund Schemes) Regulations 2012 Building (Resolution of Residential Building Work Disputes) Regulations 2012 Construction Contracts (Security of Payments) Act 2004 |
Australian Capital Territory |
Building Act 2004 Construction Occupations (Licensing) Act 2004 Building and Construction Industry Training Levy Act 1999 Building and Construction Industry (Security of Payment) Act 2009 |
Victoria |
Building Act 1993 Domestic Building Contracts Act 1995 Building and Construction Industry Security of Payment Act 2002 |
South Australia |
Building Work Contractors Act 1995 Building and Construction Industry Security of Payment Act 2009 Worker’s Liens Act 1893 |
Western Australia |
Building Act 2011 Building Services (Complaint Resolution and Administration) Act 2011 Building Services (Registration) Act 2011 Local Government (Miscellaneous Provisions) Act 1960 Home Building Contracts Act 1991 Construction Contracts Act 2004 |
- Access the National Construction Code, NCC (2019) Volumes 1, 2, and 3 on ABCB’s website, upon free registration.
- https://infostore.saiglobal.com/en-au/standards/as-3959-2018-122340_saig_as_as_2685241/ and https://www.nash.asn.au/nash/publications/nash-standards
- To develop a further understanding of the requirements of high wind visit https://infostore.saiglobal.com/en-au/standards/as-nzs-1170-2-2011-r2016--117837_saig_as_as_268251/
- To develop a further understanding of the requirements of snow and ice visit https://infostore.saiglobal.com/en-us/Standards/AS-NZS-1170-3-2003-R2016-Amdt-2-2017-1919569/
- To develop a further understanding of the requirements of earthquake visit https://www.standards.org.au/standards-catalogue/sa-snz/building/bd-006/as--1170-dot-4-2007
- Australian Height Datum is Australia’s official height reference system, which means it is used as the basis for all vertical control for mapping. To read more about it visit http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/datums-projections/australian-height-datum-ahd
- The Construction Work Code of Practice provides further discussion regarding workplace procedures and safety. Visit https://www.safeworkaustralia.gov.au/system/files/documents/1901/code_of_practice_-_construction_work.pdf
- The Environmental Guidelines for Major Construction Sites published by the Environment Protection Authority Victoria provides further discussion regarding environmental requirements. Visit Publication 480: Environmental guidelines for major construction sites | Environment Protection Authority Victoria (epa.vic.gov.au)
- To see the full document of ‘A Guide to Australian Building Product Conformity, visit https://www.abcb.gov.au/-/media/Files/Resources/Corporate/A_Guide_to_Australian_building_product_conformity.pdf?la=en&hash=8E0D85EC4D927065BE9E697DDFD55F57F5BDB8CE
- To further understand compliance and conformance principle and procedures for building products and materials, and to further guide you in the analysis of new and emerging building technologies, visit https://www.architectureanddesign.com.au/getmedia/d088c8eb-d43a-48f4-938f-69360d7ebdab/3080_APCC_Guide_to_Procurement_Ed2_251115web.aspx
- For a discussion on new and emerging building technologies visit https://www.constructiondive.com/news/8-coolest-construction-technology-innovations-of-2015/410375/
- For a discussion on new and emerging building technologies visit https://www.industryupdate.com.au/article/australian-construction-industry-embraces-new-technologies
- For a discussion on new and emerging building technologies visit https://www.bigrentz.com/blog/construction-technology
- For a discussion on new and emerging building technologies visit https://worldfinancialreview.com/2020s-construction-technology-trends
- Refer to the video to watch a more detailed discussion regarding earthwork process https://www.youtube.com/watch?v=5sMz99Z3mm0
- A geotechnical report for a proposed shopping centre development in Schofields, NSW can be found here https://www.blacktown.nsw.gov.au/files/assets/public/public-exhibitions/spp-17-00047/appendix-c-geotechnical-report.pdf
- To have more in-depth understanding regarding the compliance with standards and codes, read the Excavation Work Code of Practice 2018 by Safe Work Australia through this link https://www.safeworkaustralia.gov.au/doc/model-code-practice-excavation-work
- This document contains the installation guide of wood sheeting for flooring purposes. https://www.dindas.com.au/f.ashx/pdf/dindas-plyfloor-install-guide-june11.pdf
- To learn more detailed information regarding tilt-up wall erection process, refer to https://www.commerce.wa.gov.au/sites/default/files/atoms/files/code_tiltup_precast_.pdf
- To have a closer look regarding the installation of wall cladding, read the installation instructions for weatherboard, linked below. This installation guide contains a more detailed discussion not stated in the general process for the installation of wall cladding. https://www.tilling.com.au/wp-content/uploads/2018/08/Weatherboard-Install-e20180806.pdf