Association of Hydraulic Services Consultants Australia – Research Foundation 
Page 5 of 10 
Figure 2 - DeltaOrb DPP1110 Maximum Roof Lengths for Rainfall Intensities 
0
5
10
15
20
25
30
35
40
100
150
200
250
300
350
400
450
500
Maximum Roof Length (m)
100 year Rainfall Intensity (mm/h)
Pitch  
 15°
Pitch  
  10°
Pitch  
 7.5°
Pitch  
 5°

View this content as a flipbook by clicking here.