INSTALLATION GUIDE
Clearway drainage within lorry park
SYSTEM DRAINAGE AREAS: GRADIENT AGAINST RAINFALL INTENSITY BY NOMINAL BORE
Gradient
Rainfall intensity (discharge l/s)
Area drained 30mm/hr
Area drained 40mm/hr
Area drained 50mm/hr
Area drained 75mm/hr
Nominal bore (mm)
150
150
150
150
150
1:50 (2.00%)
25.2
3020
2270
1810
1210
1:100 (1.00%)
17.7
2130
1600
1280
850
1:200 (0.50%)
12.5
1500
1120
900
600
1:300 (0.33%)
10.1
1220
910
730
490
1:400 (0.25%)
8.7
1050
790
630
420
1:500 (0.20%)
7.8
940
700
560
370
1:1000 (0.10%)
5.5
650
490
390
260
143
TECHNICAL INFORMATION: charcon.technical@aggregate.com
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