About Cyclone Regions
updated 12 Apr 2011
Tropical cyclones pose a serious threat to Northern Territory
communities and industry. Much of the Northern Territory coastline being close
to the equator is in a region where cyclones tend to form.
Australia is
broken into different regions according to the intensity of the destructive
winds associated with the cyclone. Region C is classed as having the most
destructive winds. See the map below to show breakdown of the cyclone regions
over Australia. (Map source: BCA 2008 volume two)
Ecohousing buildings have undergone severe cyclone testings at
James Cook University’s Cyclone Testing Station in Townsville, North Queensland.
The building system is certified to meet the Darwin Cyclonic wind loading using
the Low-High-Low pressure sequence of 10,360 load cycles over a 7 hour
period.
This is now an ABCB “Australian Building Codes Board” mandatory
testing procedure for Buildings in Cyclonic areas. Ecohousing
undertook this test regime in 2001 and passed the full test successfully to the
following maximum specifications.
SAA Wind Loading Code
AS1170.2-1989
The Ecohousing uses a 78mm Wall and a 104mm Roof has
successfully passed AS1170.2-1989 testing for Cyclone Region C, Terrain Category
2.
You can read more about this, and view the ABCB Cyclonic
requirements here
in PDF
Ecohousing Cyclone Rating
Roof Panel undergoing low-high-low pressure test for 10 360
cycles for 7 hours at maximum dynamic load
Wall Panel undergoing static load testing
After 10 360 low-high-low pressure cycle test all panels are
pushed to find the fail point, the roof panel far exceeded the James Cook Uni
expectations lasting longer with higher loads then any other product currently
tested.