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18-0165B Stormwater Management Report_Issue D
Attached to the e-mail Amended stormwater management report - 5, 12 & 18 Taylor Court, Cooroy (MCU18/0120 & RAL18/0013 OPW18/0197) Existing landuse parameter or MUSIC.
Original PDF page 20, section 1. The text section number identifies this passage in the reader.
Proposed Industrial C
F.F.L. - 121.400m
PIT 1/1
DP DP DP DP DP DP DP DP DP DP DP DP DP DP DP DP DP DP DP
DP 150Ø PVC-U at 1%
co
300Ø PVC-U at 1% 225Ø PVC-U at 1%
i ls 1%
eta U at
k1
d PVC-
an 100Ø
T Proposed underground harvest
MH
5 fo r
C0 & reuse OSD tank by builder.
fer Total water storage = 48 kL
Re
STORMWATER TANK 1 PIT 6/1 PIT 5/1 PIT 4/1 PIT 3/1 PIT 2/1
450mm sq Pit
with D-Class Grate 300Ø PVC-U at 1% 225Ø PVC-U at 1% 225Ø PVC-U at 1% 225Ø PVC-U at 1%
300Ø PVC-U at 1%
S.L. - 120.72 2/225Ø PVC-U at 1%
Outlet Weir with orifice to
Manufacturer's specification. 15
PIT 7/1 0Ø
PV
C-
Ua
t1
%
225Ø PVC-U at 1%
co
PIT 1/2
DP DP DP DP DP DP DP DP DP DP
DP
Existing boulder retaining
wall to be retained.
225Ø PVC-U at 1%
PIT 1/5
150Ø or 2/100 PVC-U
Rock scour protection. with vertical drop and
Typical to pits discharged into swale.
2/225Ø PV
DP
discharging into swale Typical.
& bio-retention basin.
DP
C
-U at 1%
Proposed Industrial B
F.F.L. - 120.950m
450mm sq Pit
with D-Class Grate
S.L. - 120.76
1%
at
U
C-
PV
Proposed landscaped
0Ø
diversion swale. Refer
10
C04 for detail.
DP DP DP DP DP DP DP DP DP DP DP
225Ø PVC-U at 1%
Divers
ion Sw
ale 3%
Proposed underground harvest
& reuse OSD tank by builder.
Total water storage = 73 kL STORMWATER DRAINAGE:
Fall
ls
tai
de
All Stormwater pipes shall 150Ø PVC-U with
2
nk
PIT 6/3 PIT 5/3 PIT 4/3 PIT 3/3 PIT 2/3
Ta
MH 300mm Min. cover and laid at 1:100mm Min.
or
6f
C0
PIT 8/1 225Ø PVC-U at 1% 225Ø PVC-U at 1% 225Ø PVC-U at 1% 225Ø PVC-U at 1% 100Ø PVC-U at 1% fall. U.N.O.
fer
225Ø PVC-U at 1% 2/225Ø PVC-U
Re
at 1%
DP DP 225Ø PVC-U at 1% DP STORMWATER TANK 2
DP DP DP DP DP DP - 150Ø downpipes to stormwater pipes/rainwater
tanks as illustrated. U.N.O.
PIT 2/5 Downpipe diameter based on eaves gutters
225Ø PVC-U at 1%
PIT 1/3 with a minimum of 24700mm² to a maximum
450mm sq Pit of 55000mm² effective cross-sectional area
with D-Class Grate Proposed underground harvest and a gradient of 1:500 or steeper.
& reuse OSD tank by builder.
S.L. - 120.30 DP
Total water storage = 46 kL
Stormwater pipes shall be connected to an
approved Legal Point of Discharge as specified
MH by N.C.C. and QUDM.
%
s
All stormwater drainage shall be in accordance
il
t1
eta
Ua
3d
with A.S. 3500
C-
ank
PV
T
0Ø
or
7f
30
All stormwater drainage shall be in accordance
C0
fer
with N.S.C. guidelines to minimise erosion
Re
Proposed Industrial A STORMWATER TANK 3 and scouring. Stormwater flow other than natural
F.F.L. - 120.500m overland flow shall not be discharged onto
neighbouring property.
DP
The stormwater drainage design shown herein may
SW
2/225Ø PV
only be altered with written approval by the design
225Ø PVC-U at 1%
Engineer.
C-U at 1%
SW
PIT 3/5
450mm sq Pit DP
with D-Class Grate DP DP DP DP DP DP BIORENTENTION BASIN NOTES:
SW
S.L. - 120.24 6. Inspection hold points for bioretention basin construction are as
%
at 1
1. Bioretention basing to be constructed with a minimum 300mm follows.
-U
225Ø PVC-U at 1%
VC
non-dispersive layer of soil to all banks.
ØP
7. Completion of bulk earthworks.
00
2/3
SW
2. Vegetation to comply with the requirements of appendix 'A' of
'Healthy Waterways Water Sensitive Urban Design' to loamy soils. 8. Completion of subsoil drainage system.
450mm sq Pit 450mm sq Pit 450mm sq Pit Refer to landscape architects plans for details.
9. Completion of coarse sand transition layer
with D-Class Grate with D-Class Grate with D-Class Grate
SW
3. FAWB (Facility for Advancing Water Biofiltration) accredited
S.L. - 119.86 S.L. - 119.86 S.L. - 119.86
certification for filtration media to be forwarded to the engineer 10. Completion of sandy loam filtration media layer
prior to placement.
450mm sq Pit Proposed stepped bio-retention basin to
11. Flush out points are to be fitted with a fixed inspection opening
accept stormwater discharge from all
with D-Class Grate
SW
building roofs, majority hardstands and 4. Subsoil drainage pipes to be unlocked slotted uPVC laid at 1:200 cap. screw on caps are not acceptable.
S.L. - 119.86 landscape areas. Refer detail on C01. minimum grade
OUTLET 4/5 12. Sandy loam filtration media layers is to be protected by a geofabric
Rock lined See the original
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