Attachment 2 - Engineering Drawings

                                                Peak Flow for Subject Lot
                             Total Catchment Area = 388m² Time of Concentration 5 min
                         Intensity                                          Runoff Coefficient
 ARI       AEP%                            fi       C10          FY                                      A (m²)       Q(peak flow) = CIA (L/s)
                          (mm/hr)                                                 (Cy)                                                                                                                                                                                                           IO
                                                                                                                                                                                                                                                                                                       DP
 Q1          63             125          0.00       0.53         0.8                  0.424                  388                5.71




                                                                                                                                                                                                                                                                                          .0
                                                                                                                                                                                                                                                                                        36
                                                                                                                                                                                                                                                                                       IL
 Q2          39             161          0.00       0.53         0.85                 0.451                  388                7.82
 Q5          20             193          0.00       0.53         0.95                 0.504                  388               10.47




                                                                                                                                                                                                                                                             °5 6m
                                                                                                                                                                                                                                                                                                                                                 12




                                                                                                                                                                                                                                                                  "
Q10          10             227          0.00       0.53          1                   0.530                  388               12.97




                                                                                                                                                                                                                                                         0Ø 0' 00
                                                                                                                                                                                                                                                                                                                                                    9




                                                                                                                                                                                                                                                           43 5.9
                                                                                                                                                                                                                                                                                                                                               19 °00




                                                                                                                                                                                                                                                               1
                                                                                                                                                                                                                                                                                                                                                 .7
Q20          5              259          0.00       0.53         1.05                 0.557                  388               15.53                                                                                                                                                                                                                67 '
Q50          2              301          0.00       0.53         1.15                 0.610                  388               19.77
                                                                                                                                                                                                                                                                                                 Proposed




                                                                                                                                                                                                                                                              10
Q100         1              333          0.00       0.53         1.2                  0.636                  388               22.83                                                                                                                                                             Residence

                                     Peak Flow for Subject Lot Without Water Tank                                                                                                                                                                                                                  SUBJECT
                             Total Catchment Area = 388m² Time of Concentration 5 min                                                                                                                                                                                                                LOT                                                                                   0
                                                                                                                                                                                                                                                                                                                                                                                      35.0
                         Intensity                                               Runoff                                                                                                                                                    IO DP
 ARI       AEP%                            fi       C10          FY                                      A (m²)       Q(peak flow) = CIA (L/s)




                                                                                                                                                                                                                          43 120
                          (mm/hr)                                             Coefficient(Cy)




                                                                                                                                                                                                                               0'
                                                                                                                                                                                                                                                  IL                                 Nominated Position




                                                                                                                                                                                                                              .
                                                                                                                                                                                                                            °5
                                                                                                                                                                                                                           34
                                                                                                                                                                                                                                                    35
                                                                                                                                                                                                                                                       .5
 Q1          63             125           0.6       0.82         0.8                  0.656                  388                8.84                                                                                                                      0                          For Water Tank.
 Q2          39             161           0.6       0.82         0.85                 0.697                  388               12.09                                                                                                                     15                          Ground Level 35.25m.
                                                                                                                                                                                                                                                              0Ø    IL




                                                                                                                                                                                                                                                                                                                                                                                                           SW
 Q5          18             193           0.6       0.82         0.95                 0.779                  388               16.20                                                                                                                                  35
                                                                                                                                                                                                                                                                            .1
                                                                                                                                                                                                                                                                              0




                                                                                                                                                                                                                                                                                                                                                                                               .00
Q10          10             227           0.6       0.82          1                   0.82                   388               20.06




                                                                                                                                                                                                                                                                                                                                                                                             34
                                                                                                                                                                                                                                                                                                                                                                             m
                                                                                                                                                                                                                                                                                                                                                                                      0"
Q20          5              259           0.6       0.82         1.05                 0.861                  388               24.03




                                                                                                                                                                                                                                                                                                                                                                            4
                                                                                                                                                                                                                                                                                                                  A




                                                                                                                                                                                                                                                                                                                                                                                  '0
                                                                                                                                                                                                                                                                                                                                                                         .5




                                                                                                                                                                                                                                                                                                                                                                                                     SW
                                                                                                                                                                                                                                                                                                                                                                       15
                                                                                                                                                                                                                                                                                                                                                                                 00
Q50          2              301           0.6       0.82         1.15                 0.943                  388               30.59                                                                                                                                                                              18
                                                                                                                                                                                                                                                                                            IL                                1:




                                                                                                                                                                                                     m




                                                                                                                                                                                                                                                                                                                                                                             8°
                                                                                                                                                                                                                                                                                              35                                 8




                                                                                                                                                                                                    "
                                                                                                                                                                                       43 .18

                                                                                                                                                                                                 00
                                                                                                                                                                                                                                                                                                                              GR APP




                                                                                                                                                                                                                                                                                                                                                                            21
                                                                                                                                                                                                                                                                                                 .1
Q100         1              333           0.6       0.82         1.20                 0.984                  388               35.32                                                                                                                                                               0




                                                                                                                                                                                             18

                                                                                                                                                                                              0'




                                                                                                                                                                                                                                                                                                                                                     RL
                                                                                                                                                                                                                                                                                                                                   A R




                                                                                                                                                                                          °5
                                                                                                                                                                                                                                                                                                                            GA TO DED OX




                                                                                                                                                                                           0




                                                                                                                                                                                                                                                                                                                                                                                       SW
                                                                                                                                                                                        .0




                                                                                                                                                                                                                                                                                                                                                   8
                                                                                                                                                                                                                                                                                                                                                 .4
                                                                                                                                                                                     36
                                                                                                                                                                                                                                                                                                                              RA




                                                                                                                                                                                                                                                                                                                                               34
                                                                                                                                                                                                                                                                                                                                 GE
                   Peak Flow for Subject Lot With 2000L Tank                                                                                                                                                                                                                                                     10




                                                                                                                                                                                                           36.00
                                                                                                                                                                                                                                                                                                                    0Ø




                                                                                                                                                                                                                                                                                                                                         AY




                                                                                                                                                                                                                                                                                                                                                                            SW
       Total Catchment Area of Roof = 151m² Time of Concentration 5 min                                                                                                                                                                                                                                                                                1:




                                                                                                                                                                                                                                                                                                                                        W
                                                                                                                                                                                                                                                 Existing                                                                                                 4




                                                                                                                                                                                                                                                                                                                                        D'
                                                                                                                                                               MH




                                                                                                                                                                                                                                                                                                                                                              RL
                                                                                                                                                                                                                                                                                                                                                               Y
                     2000L Water 2000L Water        Tank Flow




                                                                                                                                                                                                                                                                                                                                                       SW 33.7 'WA
                                                                        Final Subject Lot                                                                                                                                                        Residence
ARI       AEP%           Tank     Tank Outflow      Difference                                                                                                      SW                                                                                                                                                                                                1:8




                                                                                                                                                                                                                                                                                                                                                                               L
                                                                        Peak Flow (L/s)




                                                                                                                                                                                                                                                                                                                                                              2
                                                                                                                                                                                                                                                                                                                                                       D




                                                                                                                                                                                                                                                                                                                                                                             5R
                      Inflow(L/s)    (L/s)             (L/s)                                                                                                                                                                                                                                           450Sq Grate




                                                                                                                                                                                                                                                                                                                                                                            .5
                                                                                                                                                                                                                                                                                                                                             10




                                                                                                                                                                                                                                                                                                                                                                          33
 Q1         63           5.24            1.06           4.18                  4.66                                                                                                                                                                                                                        SL 34.50                              0Ø
                                                                                                                                                                                                                         ing




                                                                                                                                                                                                                                                                                                                                                                      RB
                                                                                                                                                                                                                                                                                                                                                                                 Outlet to
 Q2         39           6.75            1.22           5.53                  6.56                                                                                             SW
                                                                                                                                                                                                                   Exist                                                                                   IL 33.91




                                                                                                                                                                                                                                                                                                                                                                     KE
                                                                                                                                                                       V                                                   rt                                                                                                                                                    Kerb.
 Q5         18           8.10            1.35           6.75                  9.45                                                                                                                                  Carpo                                                                                                                                                        IL 33.57




                                                                                                                                                                                                                                                                                                                                             SW
                                                                                                                                                                                                                                                                       0
                                                                                                                                                                                          SW




                                                                                                                                                                                                                                                                       .0
Q10         10           9.52            1.47           8.05                  12.01




                                                                                                                                                                                                                                                                    35
                                                                                                                                                                                                                                                                                                                                                                                             MH




                                                                                                                                                                                                                                                                                                                        .50
Q20         5            10.86           1.58           9.28                  14.75
                                                                                                                                                                               ting




                                                                                                                                                                                                                                                                                                                      34
                                                                                                                                                                                                                                                                                                            21 74 m




                                                                                                                                                                                                                                                                                                                              S3W4.00
Q50         2            12.63           1.72         10.91                   19.68                                                                                        Exis ay                      SW




                                                                                                                                                                                                                                                                                                                    '
                                                                                                                                                                                                                                                                                                                 00
                                                                                                                                                                                 ew




                                                                                                                                                                                                                                                                                                                                                                                              EET
                                                                                                                                                                                                                                                                                                                 .
                                                                                                                                                                            Driv




                                                                                                                                                                                                                                                                                                              12
                                                                                                                                                                                                                                                                                                              8°
Q100        1            13.97           1.81         12.16                   23.16                                                                                                                31 16
                                                                                                                                                                                                     1° .02




                                                                                                                                                                                                                                                                                                                                                                                          R
                                                                                                                                                                                                                                                                                                                                                                                       ST
                                                                                                                                                                                                       31 1        SW
                                                                                                      Nominated 5000L                                                                                    '20
                                                                                                                                                                                                             "




                                                                                                                                                                                                                                                                                                                       SW




                                                                                                                                                                                                                                                                                                                                                                                  A
                                                                                                      Poly Tank




                                                                                                                                                                                                                                                                                                                                                                               UR
                                                                                                      'Water Tank Factory'
                                                                                                                                                                                                                           SW




                                                                                                                                                                                                                                                                                                                                                                            NT
                                                                                                                                                                                                                                                                                                                                                                          VE
                                                                                                                                                                                                                                                                                                            SW
                                                                                                                                                                                                                              1.                                                 8
                                                                                                                                                                                                                           30 213 SW                                          17   '
                                                                                                                                                                                                                             5°                                             3. °34
                                                                                                                                                                                                                                21     3.17                                     2
                                                                                                                                                                                                                                  '0
                                                                                                                                                                                                                                     290 8             3.178                 23




                                                                                                                                                                                                                                                                                                 SW
                                                                                                                                                                                                                                         °48
                                                                                                                                                                                                                                             '   SW 261°41'

                                                                                                                   Nominated 20mmØ                                                                                                                             SW




                                                                                                                                                                                                                                                                                  SW
                                                                                                                   Controlled Outlet.
                                                                                                                   Ensure Height of Outlet


                                                                                                                                                                                           35.00
                                                                                                                   is Above Half Way.                                                                                                                                   MH

                                                                                                   Ground                                                                OR
                                                                                                                                                                            EA
                                                N.T.S
                                                                                                                                                                               LLA
                                                                                                                                                                                     CR
                                                                                                                                                                                          ES
 5                      0                       5                        10                           15                        20                25                                         CEN
     Scale 1:200                                                                                                                                                                                   T

                                                                                                                     No.                Description        Date               Mat Deighton                                                                            APPROVED
AAA Design & Development Pty Ltd                                                                                                                                                                                                                                                                                              STORMWATER DESIGN
34/13 Norval Court, MAROOCHYDORE, QLD 4558                                                                                                                                    14 Orealla St,
                                                                                                                                                                                                                                                                                                             Project number D139-01
Tel/Fax: (07) 5479 6747                                                                                                                                                       SUNRISE BEACH, QLD 4567
Mob:     0422 039 247                                                                                                                                                                                                                                                                                        Date                15/11/2022                               3951-17A
email: [email protected]           design &                                                                                                                                                                                                                         For & on behalf of AAA
                                                                                                                                                                                                                                                                                                             Drawn by                        K.A.J
                                                                                       Development Pty Ltd
                                                                                                                     A                 Stormwater Amend   11-11-2022          PROPOSED DWELLING                                                                     Design & Development Consulting          Checked by                      D.L.T        Scale @ A3                                      1:200