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Appendix E - Stormwater Management Plan
Attached to the e-mail Multiple Housing – Type 3 Retirement & Special Needs (10 units) - MCU17/0551.
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Log in to see the plans as drawnManning's Section D - Existing & Developed Flood Comparison
Filename: \\bnenas01\projects\B14\150-199\B14158.W\01 Final Layout Op Works\SW_Quantity\[B14158.W_Mannings_Calcs.xlsx]Ex XSEC D
Date: 9/09/2016
By: CM
Manning's calculation as per Equation 4.2.3 of Australian Rainfall and Runoff (1987)
CROSS SECTION DETAILS Existing 1% AEP Developed 1% AEP
POINT CH Z n wA wP n x wA wA wP n x wA
1 13.021 97.433 0.060
2 13.021 97.429 0.060 0.00 0.00 0.00 0.00 0.00 0.00
3 13.061 97.434 0.060 0.02 0.04 0.00 0.02 0.04 0.00
4 14.942 97.366 0.060 1.08 1.88 0.06 1.04 1.88 0.06
5 15.203 97.356 0.060 0.16 0.26 0.01 0.15 0.26 0.01
6 15.325 97.354 0.060 0.08 0.12 0.00 0.07 0.12 0.00
7 15.559 97.277 0.060 0.15 0.25 0.01 0.15 0.25 0.01
8 15.674 97.238 0.060 0.08 0.12 0.00 0.08 0.12 0.00
9 16.393 97 0.060 0.61 0.76 0.04 0.60 0.76 0.04
10 16.878 96.84 0.060 0.51 0.51 0.03 0.50 0.51 0.03
11 16.989 96.815 0.060 0.13 0.11 0.01 0.12 0.11 0.01
12 17.441 96.946 0.060 0.49 0.47 0.03 0.48 0.47 0.03
13 17.63 97 0.060 0.19 0.20 0.01 0.18 0.20 0.01
14 17.63 97 0.060 0.00 0.00 0.00 0.00 0.00 0.00
15 19.191 97.451 0.060 1.17 1.62 0.07 1.13 1.62 0.07
16 19.3 97.48 0.060 0.06 0.11 0.00 0.05 0.11 0.00
17 21.177 97.53 0.060 0.88 1.88 0.05 0.84 1.88 0.05
18 21.177 97.53 0.060 0.00 0.00 0.00 0.00 0.00 0.00
19 22.024 97.552 0.060 0.37 0.85 0.02 0.35 0.85 0.02
20 22.073 97.554 0.060 0.02 0.05 0.00 0.02 0.05 0.00
21 22.239 97.632 0.060 0.06 0.18 0.00 0.06 0.18 0.00
22 28.224 97.956 0.060 1.07 5.99 0.06 0.94 5.90 0.06
23 30.445 97.914 0.060 0.08 2.22 0.00 0.04 1.96 0.00
24 31.958 98.000 0.060 0.03 1.02 0.00 0.01 0.65 0.00
wA wP n x wA wA wP n x wA
TOTAL 7.223475 18.65879 0.433409 6.840914 17.93179 0.410455
S
0.006 R n Q R n Q
0.387135 0.060 4.95 0.381496 0.060 4.65
Out B Flow 4.95 4.65
WSL 97.972 97.951
Calculated by Manning's Equation 4.95 4.65
Vel (m/s) 0.69 0.68
98.5
Manning's Section D - Existing & Developed Flood Comparison
98.5
98
98
97.5
Overtops Embankment
Height (m AHD)
97.5
97
97 Exis ting Surface
Exis ting 1% AEP
96.5 Developed 1% AEP
96.5
96
0 5 10 15 20 25 30 35
96
0 5 10 15 20 25 30 35
Chainage (m)
Exis ting Surface Exis ting 1% AEP Developed 1% AEP
[OCR of page images]
Manning's Section D - Existing & Developed Flood Comparison
Filename: \\bnenas01\projects\B 14\150-199\B14158.W\01 Final Layout Op Works\SW_Quantity\[B14158.W_Mannings_Calcs.xlsx]Ex XSEC D
Date: 9/09/2016
By: CM
Manning's calculation as per Equation 4.2.3 of Australian Rainfall and Runoff (1987)
CROSS SECTION DETAILS Existing 1% AEP Developed 1% AEP
POINT CH Z n wA wP nx wA wA wP nx wA
1 13.021 97.433! 0.060
2 13.021 97.429 0.060 [ 0.00 " 0.00 0.00 f 0.00 " 0.00 0.00
3 13.061 97.434 0.060 f 0.02 " 0.04 0.00 f 002 * 0.04 0.00
4 14.942 97.366 0.060 f 1.08 " 1.88 o.o6 f 1.04 " 1.88 0.06
5 15.203 97.356 0.060 f 016 " 0.26 0.01 f 0.15 " 0.26 0.01
6 15.325 97.354 0.060 f 0.08 " 0.12 0.00 f 007 " 0.12 0.00
7 15.559 97.277 0.060 f 0.15 " 0.25 oor f 015 " 0.25 0.01
8 15.674 97.238 0.060 f 0.08 " 0.12 0.00 f 0.08 ” 0.12 0.00
9 16.393 97 0.060 f 061 " 076 0.04 f 060 ” 0.76 0.04
10 16.878 96.84 0.060 f 051 " 0.51 003 f 050 " 0.51 0.03
im 16.989 96.815 0.060 f 013 " 0.11 oor f 012 " O14 0.01
12 17.441 96.946 0.060 f 049 " 0.47 0.03 f 0.48 ” 0.47 0.03
13 17.63 97 0.060 f 019 " 0.20 0.01 f 0.18 " 0.20 0.01
14 17.63 97, 0.060 f 0.00 " 0.00 0.00 f 0.00 " 0.00 0.00
15 19.191 97.451 0.060 f 1.17 " 1.62 oo7 ff 113 " 1.62 0.07
16 19.3 97.48 0.060 f 006 " 0.11 0.00 f 0.05 " 0.11 0.00
17 21.177 97.53 0.060 f oss " 1.88 0.05 f 0.84 " 1.88 0.05
18 21.177 97.53 0.060 [ 0.00 " 0.00 0.00 f 0.00 " 0.00 0.00
19 22.024 97.552 0.060 f 0.37 " 0.85 002 f 035 " 0.85 0.02
20 22.073 97.554 0.060 f 0.02 " 0.05 0.00 f 0.02 ” 0.05 0.00
21 22.239 97.632 0.060 f 0.06 " 0.18 0.00 f 0.06 " 0.18 0.00
22 28.224 97.956 0.060 f 107 " 5.99 oo6 f 094 " 5.90 0.06
23 30.445 97.914 0.060 f 008 " 222 0.00 f 004 ° 1.96 0.00
24 31.958 98.000 0.060 f 0.03 ” 1.02 0.00 f 0.01 ” 0.65 0.00
wA wP nx wA wA wP nx wA
TOTAL | 7.223475 18.65879 0.433409] 6.840914 17.93179 0.410455
Ss
0.006 R n Q R n Q
0.387135 0.060 4.95 | 0.381496 _0.060 4.65
Out B Flow 4.95 4.65
WSL 97.972 97.951
Calculated by Manning's Equation 4.95 4.65
Vel (m/s) 0.69 0.68
Manning's Section D - Existing & Developed Flood Comparison
98.5
98
Overtops Embankment
Height (m AHD)
97 V
96.5
96
0 5 10 15 20 25 30 35
Chainage (m)
—— Existing Surface === Existing 1% AEP = === Developed 1% AEP
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