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

                                                                                                                                                                                                                                       Appendix B




RSL CARE, COOROY                                    Site Layout Impervious Area Calculations

Job:                               RSL Care, Cooroy
File:                              H:\B07\050-099\B07056 - RSL Care Cooroy.WW\Misc\[B07056 Area Calculations.xls]Imperv - Layout 2
Date:                                 22/10/2007
By:                                KU

Northern Catchment
Total Catchment
                                                      Footpaths                                                                                                   Allowance                                          Allowance
                                       Roads           Length            Width     Area             ILU Type           Roof/Paved Area   # of   Sub-Total         Driveway    Sub-Total    Buildings    Roof Area      Paved   External Road
                                         m2               m               m         m2                                       m2                    m2                 m2         m2                        m2            m2         m2
                                        1162             83               1.5      124.5                A                    188         16       3008                16        256          RAC          3779           189       3274
                                        1861             66               1.5        99                 B                    189          3        567                20         60       Apartment 1     1502           75
                                        353              65               1.5       97.5                C                    209         13       2717                14        182
                                        897              240              1.5       360                 D                    241          5       1205                29        145
                                        505              54               1.5        81
                                        445
                                        366
Totals                                  5589                                        762                                                           7497                          643                       5281          264         3274
Total Impervious Area                  23310
Catchment Area                         70007        <Entered into DRAINS model                                                                              Ave      20
Percentage Impervious                   33%         >Rounded up to 35% in DRAINS model

Southern Catchment
Total Catchment
                                                      Footpaths                                                                                                   Allowance                                          Allowance
                                       Roads           Length            Width     Area             ILU Type           Roof/Paved Area   # of   Sub-Total         Driveway    Sub-Total    Buildings     Roof Area     Paved   External Road
                                         m2               m               m         m2                                       m2                    m2                 m2         m2                         m2           m2          m2
                                        410              145              1.5      217.5                A                    188         28       5264                16        448       Village Centre   821           123        2865
                                        857               7               1.5       10.5                B                    189         14       2646                20        280        Apartment 2     1397           0
                                        461              180              1.5       270                 C                    209         26       5434                14        364
                                        1318             414              1.5       621                 D                    241         13       3133                29        377
                                        983              125              1.5      187.5
                                        1698
Totals                                  5727                                        1307                                                         16477                          1469                      2218          123         2865
Total Impervious Area                  30186
Catchment Area                         65755        <Entered into DRAINS model                                                                              Ave      20
Percentage Impervious                   46%         >Rounded up to 50% in DRAINS model

Entrance Road

                                       Roads
                                        m2
Totals                                      363
Total Impervious Area                       363
Catchment Area                              889 <Entered into DRAINS model
Percentage Impervious                      41% >Rounded up to 45% in DRAINS model




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