Attachment C - Drainage Calcs & Catchment Plan

22/06/2011 DRAINAGE COMPUTATIONS SHEET

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOCATION: Noosaville REF: 4400-02 PROJECT: Bunnings Noosaville - External civil
Total .
10 yr ARI Desi
Pipe Leg Sub Area (ha) Details Equiv. ¥ = Slope | Capacity | Pipe Hydraulics (Downstream from Pit).
(mmi/hr) | Flow (l/sec)
Area (ha).
Start Tc=
eae Nominal Travel
=20 Dia. . time
K.\AA - Great Plains Jobs\4400 (Bunnings Noosa)\02 (Civil) Admin\WSUDAdmin\(4400-02( Pi Design) yr ARI (mm) (min).
Eff.
From pit Incoming | Branch
"A" |Topit"B"| Branches | Areas Cr | SAxCr
8 7 0.05
7 6 0.18
6 5 0.18
5 4 0.21
4 3 9 0.05} 0.05 0.36] 0.80 0.30 8.76 181 151 50 476 450) 0.92 30 0.54/Assumed diameter. IL interpolated
3 2 1.70 2.06} 0.80 1,66 9.31 475 809 25) 673 450) 4.93) 78 0.26|Assumed diameter. IL interpolated
2 1 11 1.63} 0.08 3.77] 0.65 3.34 15,00) 140 1297 10) 6662 895 2.00 13 0.11] Equivalent diamter to the actual 1050 x 600 BC
FALSE
9 5 0.31 0.31] 0.17 0.05 6.00 216 32 50) 161 300: 0.43) 16 0.62
FALSE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 2 2.50 2.50] 0.65) 1,63 6.00 216 975) 50) 2980 895 1.50| 13 0.14] Equivalent diamter to the actual 1050 x 600 BC