{{ propApi.closeIcon }}
Our industry
Our industry $vuetify.icons.faArrowRight
Economic research and forecasting Economics Housing outlook Tailored market research Economic reports and data Inspiring Australia's building professionals HOUSING The only place to get your industry news Media releases Member alerts Submissions See all
Business support
Business support $vuetify.icons.faArrowRight
Become an apprentice host Hire an apprentice Why host a HIA apprentice? Apprentice partner program Builder and manufacturer program Industry insurance Construction legal expenses insurance Construction works insurance Home warranty insurance Tradies and tool insurance Planning and safety services Building and planning services How can HIA Safety help you? Independent site inspections Solutions for your business Contracts Online HIA Tradepass HIA SafeScan HR Docs Trusted legal support Legal advice and guidance Professional services Industrial relations
Resources & advice
Resources & advice $vuetify.icons.faArrowRight
Building it right Building codes Australian standards Getting it right on site See all Building materials and products Concrete, bricks and walls Getting products approved Use the right products for the job See all Managing your business Dealing with contracts Handling disputes Managing your employees See all Managing your safety Falls from heights Safety rules Working with silica See all Building your business Growing your business Maintaining your business See all Other subjects COVID-19 Getting approval to build Sustainable homes
Careers & learning
Careers & learning $vuetify.icons.faArrowRight
A rewarding career Become an apprentice Apprenticeships on offer Hear what our apprentices say Advice for parents and guardians Study with us Find a course Get your builder's licence Learn with HIA
HIA community
HIA community $vuetify.icons.faArrowRight
Join HIA Sign me up How do I become a member? What's in it for me? Get involved Become an award judge Join a committee Partner with us Get to know us Our members Our people Our partners Mates rates What we do Mental health program Charitable Foundation GreenSmart
Awards & events
Awards & events $vuetify.icons.faArrowRight
Awards Australian Housing Awards Awards program National Conference Industry networking Events
HIA products
HIA products $vuetify.icons.faArrowRight
Shop @ HIA Digital Australian Standards Contracts Online Shipping and delivery Purchasing terms & conditions Products Building codes and standards Hard copy contracts Guides and manuals Safety and signage See all
About Contact Newsroom
$vuetify.icons.faMapMarker Set my location Use the field below to update your location
Change location
{{propApi.text}} {{region}} Change location
{{propApi.successMessage}} {{region}} Change location

$vuetify.icons.faPhone1300 650 620

Hoop iron bracings Requirements for compliance

Bracing is used to enable a building’s roof, wall and floor to resist horizontal forces applied to that building. It is therefore important that the type of bracing used will resist those forces. Hoop iron bracing is a common form of bracing material, so how do you tell if the products you’re using are correct for use as a structural brace or tie down – and that they comply with relevant Australian Standards?

NCC evidence of suitability

Part A5 of the National Construction Code (NCC) specifies the different methods of evidence of suitability you can use to demonstrate that materials/products will meet NCC requirements. One such method is a product technical statement. This statement is provided by the manufacturer and will specify the product, how and when it can be used and the performance requirements or relevant standards it satisfies. 

If there is no detail on the product packaging request a copy of the product technical statement and check the kN capacity to determine that it meets the requirements of AS 1684 Residential Timber Framed Construction.

AS 1684 requirements

The AS 1684 Standard requires that the nominal size for metal straps be 30 x 0.8mm GI. The minimum grade of steel strap is to be G300 (AS 1397 Continuous hot-dip metallic coated steel sheet and strip) and have bracing capacities of 1.5 kN/m for a tensioned metal strap and 3.0 kN/m for a tensioned metal strap with stud straps.

 Structural Bracing Metal strap 25 x 0.8 mm or 30 x 0.8 mm thick without stud straps
Australian Standard  Reference in Standard  Bracing capacity kN/m or Bracing Type  
AS 1684.2 (non-cyclonic)  Table 8.18 (b)   1.5
AS 1684.3 (cyclonic)  Table 8.13 (b)   1.5
 AS 1684.4 (non-cyclonic)  Table 8.3 (b)  A

The bracing capacity in the above table is appropriate for wall heights up to and including 2700mm.

Table 8.18B
Structural Bracing Metal strap 30 x 0.8 mm thick with stud straps
Australian Standard  Reference in Standard  Bracing capacity kN/m or Bracing Type  
AS 1684.2 (non-cyclonic)  Table 8.18 (b)  3.0
AS 1684.3 (cyclonic)  Table 8.13 (b)   3.0
 AS 1684.4 (non-cyclonic)  Table 8.3 (b)  B

The bracing capacity in the above table is appropriate for wall heights up to and including 2700mm.

Table 8.18D
To ensure your frame and, in turn, your bracing meets the relevant timber framing standards requirements, note that you must also use the correct bracing materials.

To find out more, contact HIA’s Building Services team.

Email us

Share with your network:

More articles on:

{{ tag.label }} {{ tag.label }} $vuetify.icons.faTimes
Find guides, how-tos, resources and more

Contracts Online 

The industry’s go-to digital platform. 

No matter the size of the job, a watertight building contract is critical to protect your business, and the current climate presents a great opportunity to go digital with your contracts.

Take me there

Business support


Supporting building professionals with custom built services and products.

  • Legal support
  • Contracts Online
  • Host an apprentice
  • Insurance services
  • Managing safety

Explore Business support