Version Date: 2023-10-16
Delta Panels Pty Ltd
P: +61 07 3271 2170    E: info@deltapanels.com   W: www.deltapanels.com    A: 731 Boundary Road, Richlands, Qld 4077   ABN: 11 147 861 292
FINAL STEP - WIND CLASSIFICATION CHART
WIND CLASSIFICATION CONVERSION TABLE
WIND CLASSIFICATION
SERVICEABILITY 
LIMIT STATE 
GUST WIND SPEED
metres per second
ULTIMATE LIMIT STATE 
GUST WIND SPEED
metres per second
Regions A and B
Regions C and D
N1 (Non-Cyclonic)
N/A
W26
W34
N2 (Non-Cyclonic)
N/A
W26
W40
N3 (Non-Cyclonic)
C1 (Cyclonic)
W32
W50
N4 (Non-Cyclonic)
C2 (Cyclonic)
W39
W61
N5 (Non-Cyclonic)
C3 (Cyclonic)
W47
W74
N6 (Non-Cyclonic)
C4 (Cyclonic)
W55
W86
Please note:  This is to be used as a guide only. 
Check with your local authority for your exacting 
rating. For a complete analysis of estimating please 
refer to Australian Standard AS/NZS 1170.2:2021 and 
AS 4055:2021
Delta Panels will not accept any liability for any loss 
or damage suffered as a result of any errors in the 
misinterpretation of any information provided in this 
guide. It is recommended to seek the services of 
an independent registered Engineer to confirm any 
calculations.

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