stormwater mgJ00300R1V1_25_Kauri_St_Cooroy_Complete · MCU18/0165

RATIONAL METHOD SUMMARY & RAINFALL DATA
Project     J00300_25_Kauri_St_Cooroy

IFD Design Rainfall Intensity (mm/hr)

     DURATION                                                AEP
 (hours) (minutes)       63%           50%       20%         10%           5%       2%       1%
  0.017      1          165.00        186.00    250.00      293.00       333.00   385.00   424.00
0.033333     2          141.00        159.00    216.00      256.00       295.00   348.00   390.00
  0.050      3          132.00        149.00    203.00      239.00       275.00   323.00   360.00
 0.0667      4          126.00        142.00    192.00      226.00       259.00   303.00   336.00
  0.083      5          120.00        135.00    183.00      215.00       245.00   285.00   315.00
  0.167      10          97.30        110.00    148.00      172.00       196.00   225.00   247.00
  0.25       15          82.30         92.90    125.00      145.00       165.00   190.00   208.00
   0.5       30          58.00         65.40     88.10      103.00       117.00   136.00   150.00
    1        60          38.70         43.80     59.50       70.20        80.70    94.50   105.00
    2       120          25.30         28.80     39.80       47.40        55.00    65.30    73.30
    3       180          19.80         22.60     31.50       37.80        44.10    52.70    59.40
    6       360          13.00         15.00     21.40       26.00        30.50    36.80    41.80
    12      720          8.54          9.95      14.60       17.90        21.20    25.80    29.40
    24      1440         5.51          6.48      9.70        12.00        14.40    17.70    20.40
    48      2880         3.42          4.04      6.15        7.72         9.37     11.70    13.60
    72      4320         2.53          2.99      4.58        5.78         7.06     8.86     10.40
    96      5760         2.04          2.40      3.67        4.64         5.69     7.17     8.41
   120      7200         1.71          2.02      3.08        3.89         4.78     6.02     7.06
   144      8640         1.49          1.75      2.66        3.36         4.12     5.19     6.08
   168     10080         1.33          1.56      2.35        2.97         3.63     4.55     5.32


Catchment Data

Details:    Kauri St Developed Site

 Variable    Value        Units
  Area:      0.4780        ha
  C10         0.85      fraction


Rational Method Summary

       Time of Concentration (tc)      13      Minutes (or 0.22 hours)

                                                             AEP
       Variable          63%          50%        20%         10%          5%       2%       1%
     Freq Factor         0.80         0.85       0.95        1.00         1.05     1.15     1.20
  Intensity (mm/hr)      87.31        98.61     132.68      154.01       175.34   201.68   221.01
  Discharge (m3/s)       0.08         0.09       0.14        0.17         0.21     0.26     0.30


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RATIONAL METHOD SUMMARY & RAINFALL DATA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Project J00300_25 Kauri_St_Cooroy
IFD Design Rainfall Intensity (mm/hr
DURATION AEP
(hours) | (minutes) 63% 50% 20% 10% 5% 2% 1%
0.017 1 165.00 186.00 250.00 293.00 333.00 385.00 424.00
0.033333 2 141.00 159.00 216.00 256.00 295.00 348.00 390.00
0.050 3 132.00 149.00 203.00 239.00 275.00 323.00 360.00
0.0667 4 126.00 142.00 192.00 226.00 259.00 303.00 336.00
0.083 5 120.00 135.00 183.00 215.00 245.00 285.00 315.00
0.167 10 97.30 110.00 148.00 172.00 196.00 225.00 247.00
0.25 15 82.30 92.90 125.00 145.00 165.00 190.00 208.00
0.5 30 58.00 65.40 88.10 103.00 117.00 136.00 150.00
1 60 38.70 43.80 59.50 70.20 80.70 94.50 105.00
2 120 25.30 28.80 39.80 47.40 55.00 65.30 73.30
3 180 19.80 22.60 31.50 37.80 44.10 52.70 59.40
6 360 13.00 15.00 21.40 26.00 30.50 36.80 41.80
12 720 8.54 9.95 14.60 17.90 21.20 25.80 29.40
24 1440 5.51 6.48 9.70 12.00 14.40 17.70 20.40
48 2880 3.42 4.04 6.15 7.72 9.37 11.70 13.60
72 4320 2.53 2.99 4.58 5.78 7.06 8.86 10.40
96 5760 2.04 2.40 3.67 4.64 5.69 7A7 8.41
120 7200 1.71 2.02 3.08 3.89 4.78 6.02 7.06
144 8640 1.49 1.75 2.66 3.36 4.12 5.19 6.08
168 10080 1.33 1.56 2.35 2.97 3.63 4.55 5.32
Catchment Data
Details: | Kauri St Developed Site
Variable Value Units
Area: 0.4780 ha
C10 0.85 fraction
Rational Method Summary
Time of Concentration (tc) 13 Minutes (or 0.22 hours)
AEP
Variable 63% 50% 20% 10% 5% 2% 1%
Freq Factor 0.80 0.85 0.95 1.00 1.05 1.15 1.20
Intensity (mm/hr) 87.31 98.61 132.68 154.01 175.34 201.68 221.01
Discharge (m3/s) 0.08 0.09 0.14 0.17 0.21 0.26 0.30