Solar Mounting Systems
2
I. Preparing
1. Determine the wind region of your installation site
Region Definition:
Wind regions are pre defined for all of Australia by Australian Standard 1170. The Wind Region has
nothing to do with surrounding topography or buildings.
Most of Australia is designated Region A which indicates a Regional Ultimate Basic Wind Velocity of
45msec.
Some areas are designated Region B (57msec). Local authorities will advise if this applies in your
area.
Region C areas (66msec) are generally referred to as Cyclonic and are generally limited to northern
coastal areas. Most Region C zones end 100km inland.
Region D (80msec) Australia's worst Cyclonic Region between Carnarvon and Pardoo in Western
Australia.
