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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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Mannin's Section B - 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 B
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 13.086 98.021 0.060
2 13.653 98.011 0.060 0.31 0.57 0.02
3 14.059 98.007 0.060 0.23 0.41 0.01
4 14.657 98 0.060 0.34 0.60 0.02
5 14.657 98 0.060 0.00 0.00 0.00
6 15.266 97.828 0.060 0.40 0.63 0.02
7 16.265 97.5 0.060 0.91 1.05 0.05 0.14 0.96 0.01
8 17.242 97.887 0.060 0.86 1.05 0.05 0.11 0.81 0.01
9 17.874 98.08 0.060 0.37 0.66 0.02
10 17.976 98.084 0.060 0.05 0.10 0.00
11 17.976 98.085 0.060 0.00 0.00 0.00
12 17.976 98.085 0.060 0.00 0.00 0.00
13 20.187 98.59 0.060 0.51 2.18 0.03
14 22.134 99.034 0.060
15 23.242 99.287 0.060
16 23.958 99.451 0.060
17 24.459 99.565 0.060
18 24.634 99.603 0.060
19 25.826 99.862 0.060
20 25.96 100.2 0.060
21 26.455 100.2 0.060
22 26.630 100.200 0.060
wA wP n x wA wA wP n x wA
TOTAL 3.976967 7.248306 0.238618 0.250663 1.776325 0.01504
S
0.006 R n Q R n Q
0.548675 0.060 3.44 0.141113 0.060 0.09
B4 Flow 3.44 3.44
WSL 98.57 97.8
Calculated by Manning's Equation 3.44 0.09
Vel (m/s) 0.87 0.35
Manning's Section B - Existing & Developed Flood Comparison
100.5
100.5
100
100
99.5
99.5
99
Proposed Development
99
98.5
Height (m AHD)
98.5
98
98
Overtops Embankment
97.5 Series1
Developed 1% AEP
97.5
97
Developed 1% AEP
96.597
96.5
96
0 5 10 15 20 25 30
96
0 5 10 15 20 25 30 35
Chainage (m)
Design Surface Exis ting Surface Exis ting 1% AEP Developed 1% AEP
A 0 97.9
[OCR of page images]
Mannin's Section B - Existing & Developed Flood Comparison
Filename: \\bnenas01\projects\B14\150-199\B14158.W\01 Final Layout Op Works\SW_Quantity\[B14158.W_Mannings_Calcs.xIsx]Des
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 nx wA wA wP nx wA
1 13.086 98.021| 0.060
2 13.653 98.011 0.060 f 031 " 0.57 0.02 [ r
3 14.059 98.007, 0.060 f 0.23 " 0.41 0.01 f ’
4 14.657 98 0.060 f 034 " 0.60 0.02 [ r
5 14.657 98 0.060 f 0.00 " 0.00 0.00 f r
6 15.266 97.828 0.060 f 040 " 0.63 0.02 [ r
7 16.265 97.5 0.060 f 091 " 1.05 0.05 f 014 " 0.96 0.01
8 17.242 97.887 0.060 [f 086 " 1.05 0.05 f 011 " 081 0.01
9 17.874 98.08 0.060 f 037 " 0.66 0.02 f r
10 17.976 98.084 0.060 f 0.05 " 0.10 0.00 f r
1 17.976 98.085 0.060 f 0.00 " 0.00 0.00 ff r
12 17.976 98.085 0.060 f 0.00 " 0.00 0.00 [ ’
13 20.187 98.59 0.060 f 051 " 218 0.03 r
14 22.134 99.034 0.060 [ r r r
15 23.242 99.287, 0.060 | r 4 r
16 23.958 99.451 0.060 [ r r r
17 24.459 99.565, 0.060 | r r
18 24.634 99.603 0.060 [ r r r
19 25.826 99.862, 0.060 | r [ r
20 25.96 100.2| 0.060 [ r 4 r
21 26.455 100.2 0.060 [ ’ lr ’
22 26.630 100.200 0.060 [ r if r
wA wP nx wA wA wP nx wA
TOTAL | 3.976967 7.248306 0.238618 | 0.250663 1.776325 0.01504
s
0.006 R n Q R n Q
0.548675 _ 0.060 3.44 [0.141113 0.060 0.09
B4 Flow 3.44 3.44
WSL 98.57 97.8
Calculated by Manning's Equation 3.44 0.09
Manning's Section B - Existing & Developed Flood Comparison
100.5
100 fc
99.5 Sf
Proposed Development
99 LZ P oP
98.5 eeeenenn--- f--
o oo
= -
<= .
= ZL
5 98 Overtops Embankment ee
Coe
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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