b'Association of Hydraulic Services Consultants AustraliaResearch Foundation 250Pitch10Pitch7.5200Maximum Roof Length (m)Pitch5Pitch4150Pitch3Pitch2100500100 150 200 250 300 350 400 450 500100 year Rainfall Intensity (mm/h) Figure 4 - DeltaTrim DPP1150 Maximum Roof Lengths for Rainfall Intensities Page 7 of 10'