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<br />DRAINAGE CRITERIA MANUAL <br /> <br />RAINFALL <br /> <br />. Table 3~2" <br /> Example 3.2 Design Storm Calculation <br /> 10-Year Design Storm <br /> I-Hour Depth = 1.60 Inches <br /> Time Percent of I-Hour Incremental <br /> (Mi nutes) Ra i nfa 11 Rainfall - Inches <br /> 5 2.0 0.03 <br /> 10 3.7 0.06 <br /> 15 8.2 0.13 <br /> 20 15.0 0.24 <br /> 25 25.0 0.40 <br /> 30 12.0 0.19 <br /> 35 5.6 0.09 <br /> 40 4.3 0.07 <br /> 45 3.8 0.06 <br /> 50 3.2 0.05 <br /> 55 3.2 0.05 <br />. 60 3.2 0.05 <br /> 65 3.2 0.05 <br /> 70 3.2 0.05 <br /> 75 3.2 0.05 <br /> 80 2.5 0.04 <br /> 85 1.9 0.03 <br /> 90 1.9 0.03 <br /> 95 1.9 0.03 <br /> 100 1.9 0.03 <br /> 105 1.9 0.03 <br /> 110 1.9 0.03 <br /> 115 1.7 0.03 <br /> 120 1.3 0.02 <br /> Total 115.7 1.84* <br /> * Note that the 2-hour total is close, but not exactly the same value <br /> of the 2-hour, 10-year depth shown in example in 2.1.2. These sma 11 <br /> differances are considered to be acceptable. <br />. <br /> <br />5-1-84 <br />