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STRUCTURE NO
PRELIMINARY STORMWATER CALCULATIONS:
UPPER CATCHMENT
AEP (%)
TYPE 2 PIT
TYPE 2 PIT
TYPE 2 PIT
TYPE 2 PIT
900 x 900
900 x 900
900 x 900
900 x 900
Qy = (Cy . tIy . A)/360
1050 MH
1050 MH
STRUCTURE TYPE
A = 0.15 ha
Cy = 0.88
t = 5 mins
Iy = 271.2 mm/h (Inclusive Climate Change Factor of 20%) (ARI 10)
E 1996.874
E 1994.995
E 1993.673
E 1993.264
E 1992.341
Qy = 99.5 L/s
N 4959.916
N 4956.792
N 4937.343
N 4931.157
N 4918.186
STRUCTURE SETOUT
300Ø @ 1% = 107.4 L/s
THEREFORE, 300Ø PIPE REQUIRED BEFORE PIT 004.
FULL CATCHMENT (UPPER AND LOWER CATCHMENT)
Qy = (Cy . tIy . A)/360
EDD RL 35.06
A = 0.2 ha
DESIGN SURFACE
INDICATIVE ONLY
Cy = 0.88
WIER APPROX t = 5 mins
RL 35.11
Iy = 271.2 mm/h (Inclusive Climate Change Factor of 20%) (ARI 10)
WIER APPROX
RL 34.60 Qy = 132.6 L/s
ROOFWATER OUTLET
REFER DETAIL
[email protected]% = 132.8 L/s
NATURAL SURFACE
THEREFORE, 375Ø PIPE REQUIRED AFTER PIT 004.
(DETENTION TANK EXCLUDED IN ABOVE CALCULATION)
DESIGN SURFACE
BIORETENTION BASIN
REFER DETAIL
300mm OVERFLOW WEIR
300mm FOR OVERFLOW
LOW FLOW OUTLET FROM BOTTOM OF DETENTION TANK
600mm
DETENTION
18,000 LITRES
600mm
STORAGE FOR REUSE
18,000 LITRES EXISTING ASBESTOS SEWER
OVERALL SIZE OF JOIN TO EXISTING
OVERFLOW, DETENTION, & STORAGE: STORMWATER
10m x 3m x 1.5m
SW DN300 IL 28.73
IL32.99
IL29.20
EXISTING TELSTRA
TO BE LOWERED / RELOCATED
LOWERED SEWER
SE DN150
SE DN150
APPROX IL 28.2
KERB WITH BREAKS
WEIR APPROX RL 35.11
DATUM RL 27.0 SURFACE ~RL 35.16
1:2 EDD RL 35.06
MA
PROPOSED WALL
0.4
X
0.3
PIPE SIZE (mm) Ø300 Ø375 Ø375 Ø375
PIPE CLASS RCP RCP RCP RCP ROOFWATER
BASIN
PIPE GRADE APPROX (%) 1% 4.708% 0.600% 0.600% ROOFWATER OUTLET OVERFLOW
PIPE SLOPE ONLY (1 in ...) 100 21.241 166 166 PIT
PIPE FLOW (cumecs) STORMWATER PIPE (REFER LONG SECTION)
REFER PRELIMINARY CALCULATIONS BIORETENTION BASIN SOIL PROFILE
CAPACITY FLOW (cumecs)
AS PER WBD BIORETENTION
FULL PIPE VELOCITY (m/s) TECHNICAL DESIGN GUIDELINE
REFER PRELIMINARY CALCULATIONS · 500mm - FILTER MEDIA
NORMAL DEPTH VELOCITY (m/s) LOWER CATCHMENT
RP92518
· 100mm TRANSITION LAYER EXISTING SEWER TO REMAIN
135
UPPER CATCHMENT
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
· 300mm DRAINAGE LAYER
APPROX .05 ha
HGL & WSE APPROX 0.15 ha
BIORETENTION BASIN DETAIL
RP122891
1.589
1.093
2.610
1.191
1.211
2.053
2.073
0.898
2.179
1.074
1.074
APPROX
2
NTS
DEPTH TO INVERT ONLY
NOT FINAL
J:\2021\21617ID1_24 Katarina St & 10 Natasha Ave Noosa Heads - Road Access\4.CADD\#ACAD\21617_CIVIL.dwg
33.471
33.457
31.940
31.300
31.280
30.080
30.060
30.038
28.757
28.735
28.735
APPROX
INVERT LEVEL ONLY
NOT FINAL
35.060
(35.649)
34.550
(35.235)
32.491
(33.569)
32.133
(32.150)
30.937
(31.405)
29.809
(29.809)
DESIGN (& EXISTING)
SURFACE LEVEL
0.000
3.703
18.197
29.397
35.808
42.400
CHAINAGE / LENGTH 2.803 13.594 5.436 5.542
< CAD co-ord 0,15
PRELIMINARY CATCHMENT PLAN
NTS
PRELIMINARY STORMWATER ALIGNMENT 001
COPYRIGHT © Associated Consultants Client Drawn Verified Project Drawing Title Scale Sheet Size
AR DR
This drawing is subject to
copyright in accordance with CHRIS CLOUT DESIGN MARK BAIN 24 KATHARINA ST & 10 NATASHA AVE PRELIMINARY DESIGN AS SHOWN A1
the agreement between TOD Designed Verified
Consulting Pty Ltd (tc) and tc's CONSTRUCTIONS AR DR SHARED DRIVEWAY & EARTHWORKS PRELIMINARY STORMATER ALIGNMENT Drawing Number
client. This drawing shall only
be used for this specific project. Approved RPEQ No RP DESCRIPTION 2 RP122891 & 135 RP92518 & PRELIMINARY CALCULATIONS 21617-SK301
This drawing shall not be used Noosa: 07 5449 9600 Sunshine Coast: 07 5329 3190 - - LOCAL AUTHORITY NOOSA SHIRE COUNCIL
MCU APPROVAL - HORIZ DATUM LOCAL 0 10 20 30 40 50 60 Sheet Revision
for construction until marked as PO Box 61, Noosaville, QLD 4566 Signed
A 01.04.22 FOR INFORMATION AR [email protected] www.todconsulting.com ROL APPROVAL - VERT DATUM AHD
'Issued For Construction' in the
revision description. Rev Date Revision Description Drawn ABN 39 128 805 336 01.04.22 OPW APPROVAL - RL DATUM LOCAL MEASUREMENT BAR - INCREMENTS IN mm 11 of 11 A
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