18164 - SBSMP - Rev 0

Item              Description                                               Detail        Comment
g.                Flood storage volume above extended detention
                                                                             N/A
                  (m3)
6. Inlet Design
a.              Inlet/inflow type                                           Pipe
b.              Diversion/surcharge type                                     N/A
c.              Coarse sediment removal                                      N/A
d.              Coarse sediment removal area (m2)                            N/A
e.              Coarse sediment removal depth (m)                            N/A
f.              Coarse sediment clean-out frequency                          N/A
g.              Flow distribution type                                       N/A
h.              Confirm scour protection at inflow locations                 Yes          Refer comment 3a.
i.              Minor storm flow velocity over filter (m/s)                 0.076         Scour protection provided
j.              Major storm flow velocity over filter (m/s)                  N/A          Refer comment 2c.
7. Underdrainage (Outlet Design)
a.              Filter media saturated hydraulic conductivity
                                                                             180
                (mm/hr)
b.              Maximum filter infiltration capacity (m3/s)               0.010125        Based on 135m2 filter media area
c.              Underdrain capacity inclusive of blockage factors
                                                                         >0.010125        [email protected]% grade
                (m3/s)
8. Outflow Design (Outlet Design)
a.              Overflow pit type                                         Field inlet     Refer comment 3a.
b.              Overflow pit dimensions (mm)                               900x600        Refer comment 3a.
c.              Overflow weir length (m)                                     3.00
d.              Overflow pit capacity inclusive of blockage                               Assuming 50% blockage and 600mm ponding over
                                                                            1.16
                factors (m3/s)                                                            the surface of the pit.
e.              Overflow pit plus overflow weir capacity inclusive
                                                                             N/A          Refer comment 2c.
                of blockage factors (m3/s)
f.              Outlet pipe size (mm)                                       Ø375          Refer comment 3a.
g.
                Appropriate outlet scour protection provided                 N/A          Outlet to Detention Tank.
9. Vegetation Design
a.                                                                             -          Refer Landscape Architect Plans prepared by AGLA
                Planting style
                                                                                          (Job No. 19.021).
b.                Trees and shrubs to be included                             -           Refer 9.a
c.                Species diversity                                           -           Refer 9.a
d.                Species selection                                           -           Refer 9.a
e.                Planting density                                            -           Refer 9.a
f.                Mulch type and depth                                        -           Refer 9.a




                                                26-11-19 - 18164 - Bio det basin design checklist                                      Page 2