Pitched roof mount installation manual – Version 2016 1.0 to AS/NZS1170.2.2011 Amdt 3
–
2012 7
DETERMINING WIND REGION
Figure: National wind map (in accordance with AS/NZS 1170.2:2011/Amdt 3:2012)
Wind regions are pre-defined by Standard AS/NZS 1170. The Wind Region has nothing to do with
surrounding topography or buildings.
Wind Zone
A
B
C
D
Wind Speed (m/s)
41
48
69
88
PLANNING THE MODULE AREA
Solar panels can be installed anywhere on the roof, as long as sufficient fixings are used. Higher wind speeds
are encountered at the edges of roofs and therefore more fixings are required in these areas. For a flush
mounted array, a roof can be divided into two zones, the central zone and the end zone. The width of these
zones can be determined based on the length of the building.
Determining the width of the central and end zones, ‘B/3’. The width of the central and end zones is
determined by calculating the roof length and dividing this result by 3. An exclusion zone of 600 mm must be
made on the edges of the roof.
