Version Date: 2023-10-16
WIND CLASSIFICATION FROM WIND REGION AND SITE CONDITIONS
TOPOGRAPHIC CLASSIFICATION
Region
Terrain
Category
T0
T1
T2
T3
T4
T5
FS
PS
NS
FS
PS
NS
FS
PS
NS
PS
NS
NS
NS
A
3
N1
N1
N1
N1
N2
N2
N2
N2
N2
N3
N3
N3
N4
2.5
N1
N1
N2
N1
N2
N2
N2
N3
N3
N3
N3
N4
N4
2
N1
N2
N2
N2
N2
N3
N2
N3
N3
N3
N3
N4
N4
1.5
N2
N2
N2
N2
N3
N3
N3
N3
N3
N3
N4
N4
N5
1
N2
N3
N3
N2
N3
N3
N3
N3
N4
N4
N4
N4
N5
B
3
N2
N2
N3
N2
N3
N3
N3
N3
N4
N4
N4
N4
N5
2.5
N2
N3
N3
N3
N3
N3
N3
N4
N4
N4
N4
N5
N5
2
N2
N3
N3
N3
N3
N4
N3
N4
N4
N4
N5
N5
N6
1.5
N3
N3
N4
N3
N4
N4
N4
N4
N4
N5
N5
N5
N6
1
N3
N4
N4
N4
N4
N4
N4
N5
N5
N5
N5
N6
N6
C
3
C1
C1
C2
C1
C2
C2
C2
C2
C3
C3
C3
C3
C4
2.5
C1
C2
C2
C2
C2
C2
C2
C3
C3
C3
C3
C4
N/A
2
C1
C2
C2
C2
C2
C3
C2
C3
C3
C3
C4
C4
N/A
1.5
C2
C2
C3
C2
C3
C3
C3
C3
C4
C4
C4
N/A
N/A
1
C2
C3
C3
C3
C3
C3
C3
C4
C4
C4
N/A
N/A
N/A
D
3
C2
C3
C3
C2
C3
C3
C3
C3
C4
C4
C4
N/A
N/A
2.5
C2
C3
C3
C3
C3
C4
C3
C4
C4
C4
N/A
N/A
N/A
2
C3
C3
C4
C3
C4
C4
C4
C4
N/A
N/A
N/A
N/A
N/A
1.5
C3
C4
C4
C4
C4
N/A
C4
N/A
N/A
N/A
N/A
N/A
N/A
1
C3
C4
C4
C4
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
STEP 5 -TOPOGRAPHIC CLASSIFICATION
By applying the results of the above 4 different factors that influence the wind classification, Region, Terrain Category, 
Shielding Determination & Topographic Effect to the WIND CLASSIFICATION CHART below a determination on the 
topographical classification can be made and then applied to the Delta Panels Engineering Charts.
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

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