Original source · versioned page text
Stormwater Management Report
Attached to the e-mail Response to Information Request - MCU18/0120, RAL18/0013, OPW18/0197.
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
co
150Ø PVC-U at 1% 300Ø PVC-U at 1% 225Ø PVC-U at 1%
1%
Proposed 2/23kL underground U at
PVC-
MH MH
harvest & reuse tank. 100Ø
Type HD 23000 (with
T44 Lid Class D) by Allcast
Precast.
2/225Ø PVC-U at 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% 300Ø PVC-U at 1% 225Ø PVC-U at 1% 225Ø PVC-U at 1% 225Ø PVC-U at 1%
S.L. - 120.72
PIT 7/1
15
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
2/225Ø PV
discharged into swale. DP
discharging into swale Typical.
& bio-retention basin.
DP
C-U
at 1%
1%
Proposed Industrial B
at
C-U
F.F.L. - 120.950m
PV
Proposed 3/23kL underground MH MH
450mm sq Pit
0Ø
10
harvest & reuse tank.
with D-Class Grate Type HD 23000 (with
S.L. - 120.76 T44 Lid Class D) by Allcast MH
Precast.
2/2
2 5Ø
PV
C-
Ua
t1
%
Proposed grass lined
swale. Refer C04 for
detail.
DP DP DP DP DP DP DP DP DP DP DP
225Ø PVC-U at 1% PIT 2/5
Grass
Lined S
wale 2
STORMWATER DRAINAGE:
% Fall
All Stormwater pipes shall 150Ø PVC-U with
PIT 6/3 PIT 5/3 PIT 4/3 PIT 3/3 PIT 2/3
300mm Min. cover and laid at 1:100mm Min.
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% PIT 1/3 fall. U.N.O.
225Ø PVC-U at 1%
%
t1
DP DP 225Ø PVC-U at 1% DP
DP - 150Ø downpipes to stormwater pipes/rainwater
Ua
DP DP DP DP DP
C-
PV
tanks as illustrated. U.N.O.
0Ø
Downpipe diameter based on eaves gutters
30
225Ø PVC-U at 1%
with a minimum of 24700mm² to a maximum
450mm sq Pit of 55000mm² effective cross-sectional area
with D-Class Grate and a gradient of 1:500 or steeper.
S.L. - 120.30
DP
Stormwater pipes shall be connected to an
approved Legal Point of Discharge as specified
by N.C.C. and QUDM.
Proposed 2/23kL underground
harvest & reuse tank.
Type HD 23000 (with All stormwater drainage shall be in accordance
MH
T44 Lid Class D) by Allcast
Precast. with A.S. 3500
All stormwater drainage shall be in accordance
with N.S.C. guidelines to minimise erosion
MH
Proposed Industrial A 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 batter. 5. All right angle subsoil pipe bends are to be created using 2x 45° or approved equivalent for the duration of construction.
OUTLET 9/1 Existing Stormwater Pit 1 in 2 batter.
SW
to be removed. bends.
SW
Proposed bio-retention basin to
accept stormwater discharge from
all building roofs, majority hardstands
SW
SW
and landscape areas. Refer detail on C04. PIT 3/4 450Ø RCP at 1.5% below bio-basin. 100Ø slotted underdrain collector PIT 2/4 450Ø RCP at 1.5% below bio-basin.
Sandstone retaining wall. PIT 1/4 SW
Total surface area = 250m2 Not shown for clarity. Refer bio-basin pipes with slotted pipe clean-out Not shown for clarity. Refer bio-basin
Typical along stepped
Filter media Area - 120m2 details. risers (capped) at ends. Typical. details. SW
bio-retention basin.
900Ø I.L. - T.B.C. SW SW SW SW SW
SW SW SW SW SW SW SW SW SW SW SW SW SW SW
EXISTING PIT 4/4
Issue Made By Date Description PROPOSED COMMERCIAL DEVELOPMENT Scale : 1:200 AT A1 NOTES:
0 PC 06/07/18 Preliminary ONLY - for DA Approval
at NO. 5 TAYLOR COURT, See the original
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