National Construction Code Changes - Garage Doors
From 1 May 2019, an important National Construction Code amendment comes into effect for all buildings, including sheds, built in wind regions A and B in accordance with AS/NZS1170.2-2011. The intent of the amendment is to help make buildings safer for those in Australia and New Zealand.
Taurean Door Systems (Taurean) has a number of compliant rated roller door options available which satisfy this amendment, including our NovaTaur Commercial roller door (N2 rating up to 3,090mm wide) and our WindLock Pr1me Series roller doors (N3 rating up to 5,100mm wide).
What are the changes?
The amendment requires that structures such as sheds designed to this Standard of all sizes are built to withstand higher internal pressures if the openings are not certified for the applied wind pressure. These changes will affect how we build and design sheds moving forward.
Specifically, the change relates to Section 220.127.116.11 and says:
“The full area of doors, including large access doors (e.g. roller doors) and windows that are normally closed, shall be considered to be openings, unless they are demonstrated to be capable of resisting the applied wind pressures.” (An extract from AS/NZS1170.2-2011 Amendment 4)
You can achieve this by using rated doors and windows capable of resisting N2 wind pressures when closed, or by modifying the building design. There will be no changes to wind regions C and D.
Wind loads and Taurean doors
To help customers understand what this means in terms of Taurean Roller Doors, the following wind load data refers to NovaTaur Commercial Roller Doors (non-windlock)
- Guide tracks: B tracks
- Wind design pressures in accordance to AS/NZS 4505:2012
If you’re considering the Pr1me Series roller door (windlock option), the following wind load table will assist:
- One track bracket per clip
- Door track: Steel ‘WindLock’ type
You can find more information about the code at https://ncc.abcb.gov.au/ncc-online/NCC. Simply create your own log in to download a free copy.