Response to Information Request - REC13/0015

Post DEVELOPMENT Q10Cooroy stg 1 noosa 10-Year Duration=10 min, Inten=173.2 mmlhr
Prepared by {enter your company name here}                                                    Printed 19/04/2013
HydroCAD<ID 10.00 sIn 05328 @ 2011 HydroCAD Software Solutions LLC                                      Page 10

                            Summary for Pond 2P: 47sqm Bioretention

Inflow Area =         0.3719 ha,      0.00% Impervious, Inflow Depth = 29 mm         for 10-Year event
Inflow      =     0.15029 [email protected] hrs, Volume=          0.109 MI
Outflow     =     0.12799 [email protected] hrs, Volume=          0.110 MI, Atten= 15%, Lag= 5.5 min
Primary     =     0.00000 [email protected] hrs, Volume=          0.000 MI
Secondary   =     0.12799 [email protected] hrs, Volume=          0.110 MI


Routing by Stor-Ind method, Time Span= 0.00-3.00 hrs, dt= 0.01 hrs 1 2
Peak Elev= 102.201 [email protected] hrs Surf.Area= 0.0047 ha Storage= 0.011 MI


Plug-Flow detention time= (not calculated: outflow precedes inflow)
Center-of-Mass det. time= 0.8 min (10.1    9.3 )
                                             -




Volume          Invert   Avail.Storage     Storage Description
  #1      101.900 m           0.029 MI     4.00 mWx 6.25 mL x 0.60 mH Prismatoid Z=3.0


Device    Routing            Invert    Outlet Devices
   #1     Primary        102.300 m     90.0 deg x 1.00 m long x 0.20 m rise Sharp-Crested VeelTrap Weir
                                       Cv= 1.38 (C=1.72)
   #2     Secondary 101.150 m          225 mm Round Device 1
                                       L= 5.00 m   RCP, groove end w/headwall, Ke= 0.200
                                       Inlet! Outlet Invert= 101.150 m 1 101.100 m    S= 0.0100 m/m      Cc=
                                       0.900 n= 0.010 PVC, smooth interior, Flow Area= 0.040 m2
   #3     Device 1       102.200 m     450 mm x 450 mm Horiz. Orifice/Grate       C= 0.600
                                       Limited to weir flow at low heads


Primary OutFlow Max=O.OOOOO [email protected] hrs HW=1 01.900 m                  (Free Discharge)
’t_1=Sharp-Crested VeelTrap Weir (Controls 0.00000 m3/s)
   ’t_3=Orifice/Grate (Controls 0.00000 m3/s)

Secondary OutFlow Max=0.12795 [email protected] hrs HW=102.201 m                   (Free Discharge)
’t_2=Device 1 (Inlet Controls 0.12795 [email protected] m/s)