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Appendix B - Amended Biome Consulting Response
Attached to the e-mail Amended Biome Report - stormwater in addition to Information Response - MCU170551 - 20 Trading Post Road Cooroy.msg.
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Manning's Section A - Existing & Developed Flood Comparison
Filename: \\bnenas01\projects\B14\150-199\B14158.W\01 Final Layout Op Works\SW_Quantity\[B14158.W_Mannings_Calcs.xlsx]Des XSEC A
Date: 9/09/2016
By: CM
Manning's calculation as per Equation 4.2.3 of Australian Rainfall and Runoff (1987)
CROSS SECTION DETAILS Developed 1% AEP Developed 1% AEP
POINT CH Z n wA wP n x wA wA wP n x wA
1 14.443 98.169 0.060
2 15.4 97.745 0.060 0.69 1.05 0.04 0.20 1.04 0.01
3 15.4 97.745 0.060 0.00 0.00 0.00 0.00 0.00 0.00
4 15.445 97.725 0.060 0.04 0.05 0.00 0.02 0.05 0.00
5 15.445 97.71 0.060 0.00 0.02 0.00 0.00 0.02 0.00
6 15.582 97.708 0.060 0.13 0.14 0.01 0.06 0.14 0.00
7 15.744 97.705 0.060 0.16 0.16 0.01 0.07 0.16 0.00
8 15.804 97.704 0.060 0.06 0.06 0.00 0.03 0.06 0.00
9 15.876 97.703 0.060 0.07 0.07 0.00 0.03 0.07 0.00
10 16.054 97.702 0.060 0.17 0.18 0.01 0.08 0.18 0.00
11 16.39 97.717 0.060 0.32 0.34 0.02 0.15 0.34 0.01
12 17.018 97.745 0.060 0.59 0.63 0.04 0.27 0.63 0.02
13 17.15 97.786 0.060 0.12 0.14 0.01 0.05 0.14 0.00
14 17.271 97.823 0.060 0.11 0.13 0.01 0.04 0.13 0.00
15 18.783 98.288 0.060 0.93 1.58 0.06 0.19 1.17 0.01
16 19.462 98.497 0.060 0.19 0.71 0.01
17 19.537 98.52 0.060 0.01 0.08 0.00
18 19.703 98.566 0.060 0.02 0.17 0.00
19 19.804 98.593 0.060 0.01 0.10 0.00
20 19.896 98.611 0.060 0.01 0.09 0.00
21 19.912 98.613 0.060 0.00 0.02 0.00
22 19.930 98.614 0.060 0.00 0.02 0.00
23 19.935 98.615 0.060 0.00 0.01 0.00
24 20.318 99.715 0.060 0.00 0.06 0.00
25 20.646 100.200 0.060
26 20.660 100.200 0.060
27 25.350 100.200 0.060
28 29.130 100.200 0.060
wA wP n x wA wA wP n x wA
TOTAL 3.633854 5.791722 0.218031 1.222289 4.120926 0.073337
S
0.006 R n Q R n Q
0.627422 0.060 3.44 0.296605 0.060 0.70
B4 Flow 3.44 3.44
WSL 98.673 98.168
Calculated by Manning's Equation 3.44 0.70
Vel (m/s) 0.95 0.57
Manning's Section A - Existing & Developed Flood Comparison
100.5
100
Proposed Development
99.5
99
Height (m AHD)
98.5
Overtops Embankment
98
97.5
97
96.5
96
0 5 10 15 20 25 30 35
Chainage (m)
A 0 Desi97.9
gn Surface Existing Surface Exis ting 1% AEP Developed 1% AEP
A 5.466 97.97
[OCR of page images]
Manning's Section A - Existing & Developed Flood Comparison
Filename: \\bnenas01 \projects\B14\150-199\814158,W\01 Final Layout Op Works\SW_Quantity\[B14158.W_Mannings_Calcs.xlsx]Des XSEC A
Date: 9/09/2016
By: cM
Manning's calculation as per Equation 4.2.3 of Australian Rainfall and Runoff (1987)
CROSS SECTION DETAILS Developed 1% AEP Developed 1% AEP
POINT CH Zz Q wA we. nxwA | _wA wP nx wA
1 14.443 98.169 0.060
2 15.4 97.745 0.060 0.69 1.05 0.04 0.20 1.04 0.01
3 15.4 97.745 0.060 0.00 0.00 0.00 0.00 0.00 0.00
4 15.445, 97.725 0.060 0.04 0.05 0.00 0.02 0.05 0.00
5 15.445, 97.71 0.060 0.00 0.02 0.00 0.00 0.02 0.00
6 15.582 97.708 0.060 0.13 0.14 0.01 0.06 0.14 0.00
7 15.744 97.705 0.060 0.16 0.16 0.01 0.07 0.16 0.00
8 15.804 97.704 0.060 0.06 0.06 0.00 0.03 0.06 0.00
9 15.876 97.703 0.060 0.07 0.07 0.00 0.03 0.07 0.00
10 16.054 97.702 0.060 0.17 0.18 0.01 0.08 0.18 0.00
ant 16.39 97.717 0.060 0.32 0.34 0.02 0.15 0.34 0.01
12 17.018 97.745 0.060 0.59 0.63 0.04 0.27 0.63 0.02
13 17.15 97.786 0.060 0.12 0.14 0.01 0.05 0.14 0.00
14 17.271 97.823 0.060 0.14 0.13 0.01 0.04 0.13 0.00
15 18.783 98.288 0.060 0.93 1.58 0.06 0.19 1.17 0.01
16 19.462 98.497 0.060 0.19 0.71 0.01
17 19.537 98.52 0.060 0.01 0.08 0.00
18 19.703 98.566 0.060 0.02 0.17 0.00
19 19.804 98.593 0.060 0.01 0.10 0.00
20 19.896 98.611 0.060 0.01 0.09 0.00
21 19.912 98.613 0.060 0.00 0.02 0.00
22 19.930 98.614 0.060 0.00 0.02 0.00
23 19.935 98.615 0.060 0.00 0.01 0.00
24 20.318 99.715 0.060 0.00 0.06 0.00
25 20.646 100.200 0.060 [ . r .
26 20.660 100.200 0.060 [ . r .
27 25.350 100.200 0.060 ff . r .
28 29.130 100.200 0.060 [ . r "
wA wP nxwA | wA wP nx wA
TOTAL 3.633854 5.791722 0.218031 | 1.222289 4.120926 0.073337
s
0.006 R n Q R n Q
0.627422 0.060 3.44 0.296605 0.060 0.70
B4 Flow 3.44 3.44
WSL 98.673 98.168
Calculated by Manning's Equation 3.44 0.70
Vel (m/s) 0.95 0.57
Manning's Section A - Existing & Developed Flood Comparison
100.5
100
Proposed Development
99.5
99
2
98.5
- Overtops Embankment
S 98
3
x=
97.5
97
96.5
96
0 5 10 15 20 25 30 35
Chainage (m)
————Design Surface ——Existing Surface = Existing 1% AEP === Developed 1% AEP
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