B07056.W-01A Complete - Stormwater [As Published] · 132007.2398

                                                                                                                                                                                    Appendix E




RSL Care, Cooroy

Title:                                   Water Balance - Area Calculations
Job:                                     RSL Care, Cooroy
Filename:                                H:\B07\050-099\B07056 - RSL Care Cooroy.WW\Misc\[B07056 Area Calculations.xls]Water Bal - Areas Layout 2
Date:                                    26/09/2007
By:                                      KU

Enter values in blue

Existing Site

Catchment                                  Catchment Area          Catchment Area           Cv
                                                m2                       ha
Total Site Area                                95100                    9.510              0.30
RSL Care Brief - Site Area                                              9.508

Developed Site

Catchment                                  Catchment Area          Catchment Area           Cv
                                                m2                       ha
Total Site Area                                95100                    9.510              0.49


Mitigated Site

Catchment                                  Catchment Area          Catchment Area           Cv
                                                 m2                      ha
ILU Roofs                                      22474                    2.247               0.9
Village Centre Roof                              821                    0.082               0.9
Apartment 2 (West)                              1397                    0.140               0.9
Apartment 1 (East)                              1502                    0.150               0.9
RAC Building                                    3779                    0.378               0.9
Total                                          29973

Note:
Volumetric Coefficient of Runoff (Cv) values adopted from:
Table 4.11.1 "Pine Rivers Shire Council Design Manual. Design Standards - Part 2 - Drainage - Section 4 - Design Standards. January 2005".

Developed Site Calcs
                                                  Area               # ILUs (Lots)   Average 'Lot' Size        Cv         Weighted Cv Calcs
                                                  m2                                       m2
Residential Area                                 62893                    118              533                0.50             31447
Residential Aged Care                            15525                                                        0.50             7763
Apartment 1 (East)                               4282                                                         0.50             2141
Apartment 2 (West)                               3305                                                         0.50             1653
Village Centre                                   2132                                                         0.50             1066
South Basin                                      4136                                                         0.35             1448
North Basin                                      3108                                                         0.35             1088
Area Check                                       95381                                                                          0.49          Weighted Cv

Areas from "CV AREAS" on                                        "H:\B07\050-099\B07056 - RSL Care Cooroy.WW\Acad\X_B07056_BASE.dwg"
Virtual 'Lot' size is within 'Residential A' of PRSC Table 4.7.3, therefore Cv = 0.50 applied to this area.

ILU Roof Areas
ILU Type                                          m2                      # of             Total
A                                                 169                      44               7436
B                                                 178                      17               3026
C                                                 200                      39               7800
D                                                 234                      18               4212
                                                                                           22474

Other Buildings                                                                             m2
Royal Aged Care (North)                                                                    3779
Apartment 1 (East)                                                                         1502
Apartment 2 (West)                                                                         1397
Village Centre                                                                             821
                                                                                           7499
All Buildings on site
                                 Total                                                     29973


Housing Clusters
                                                                                                          House Type numbers
ILU Rainwater Tank Catchment             North or South Dam           No. of ILU's       Tank Size              A                B                  C       D    Total Roof Area
                                                                                           (kL)                  #                #                  #      #    m2
North                                    North                            37                250                 16                3                 13      5                7008
Central                                  South                            13                 39                  6                2                  3      2                2438
South                                    South                            68                350                 22               12                 23      11              13028
                                                                          118

EP Calculations
Catchment                                        ILU's                  EP/ILU              EP              Roof Area
                                                                                                               m2
North                                             37                       1.5             55.5                    7008
Central                                           13                       1.5             19.5                    2438
South                                             68                       1.5             102                    13028
RAC                                               120                       1              120                     3779




H:\B07\050-099\B07056 - RSL Care Cooroy.WW\Misc\B07056 Area Calculations.xls