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Att 3 PSWMP
Attachment 3 Preliminary Stormwater Management Plan Response to Council’s Information Request – Application for a Development Permit to Establish a Dual Occupancy (MCU21/0192) 164 Edwards Street, Sunshine Beach 4567 QLD Lot 108 on RP94566 Adam Flanagan and Shane Tye
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Page 2
AAA DESIGN & DEVELOPMENT PTY LTD
ABN 33 109 041 287
13 Norval Court, Suite 34, Maroochydore, Qld 4558
Tel: (07)54796747 Mobile: 0422039247
Email: [email protected]
Mail: PO Box 1822 Sunshine Plaza, QLD 4558
AAA Ref No.: T081-01
January 19th, 2022.
Noosa Shire Council
PO Box 141
Tewantin QLD 4565
Dear Sir/Madam,
To be read in association with the stormwater management plan drawing No. 3497-19 for 164 Edwards
Street, Sunshine Beach.
The flow runoff calculations in drawing No.3497-19 show little difference between pre and post
development, hence along with the current surrounding site conditions, the stormwater runoff will not
adversely affect the neighbouring properties from both the roof water and any overland flows.
Figure 1 - Street View Facing South East, Subject Lot is on the left, with Edwards St falling away.
(Google Maps, Street View 2022).
As indicated in Figure 1, Edwards Street is below both the subject lot and the neighbouring lots. The
current road profile directs the storm water across it into the opposing road gutter. This results in any
stormwater directed away from both the subject site and the neighbouring downhill site.
1
Page 3
AAA DESIGN & DEVELOPMENT PTY LTD
ABN 33 109 041 287
13 Norval Court, Suite 34, Maroochydore, Qld 4558
Tel: (07)54796747 Mobile: 0422039247
Email: [email protected]
Mail: PO Box 1822 Sunshine Plaza, QLD 4558
On Behalf of
AAA DESIGN AND DEVELOPMENT PTY PTD
Jose David Lesmes
BEng Civil, MIEAust, RPEQ
2
Page 4
QUDM Catchment Calculation
1
N
Pre Development
SP188665
Peak Flow For Pre Development. Peak Flow For Pre Development.
Yard Area = 335.8m² House Area = 175.6m²
AEP% = 5% (1 in 20 Yrs) AEP% = 5% (1 in 20 Yrs)
Intensity (mm/hr) = 259mm/Hr Intensity (mm/hr) = 259mm/Hr
Fi = 0.7 Fi = 0.9 38.00
C10 = 0.84 C10 = 0.89
Fy = 1.05 Fy = 1.05
Cy = Fy.C10 => 0.88 Cy = Fy.C10 => 0.93
Q = (Cy.Iy.A)/360 => 21.26L/s Q = (Cy.Iy.A)/360 => 11.75L/s
PROPOSED
Total Discharge Pre Development 33.01L/s POOL (10.5m²)
Post Development
Peak Flow For Post Development. Peak Flow For Post Development.
Yard Area = 318.3m² House Area = 172.1m²
AEP% = 5% (1 in 20 Yrs) AEP% = 5% (1 in 20 Yrs) 37.00
BALCONY ROOF
Intensity (mm/hr) = 259mm/Hr Intensity (mm/hr) = 259mm/Hr TO FLOW BACK ONTO
Fi = 0.7 Fi = 0.9 PROPOSED HOUSE.
C10 = 0.84 C10 = 0.89 I/O
150Ø 150Ø I/O
Fy = 1.05 Fy = 1.05
Cy = Fy.C10 => 0.88 Cy = Fy.C10 => 0.93
Q = (Cy.Iy.A)/360 => 20.15L/s Q = (Cy.Iy.A)/360 => 11.51L/s
100x100 100x100
107
RL 33.9
Total Discharge Post Development 31.66L/s Rectangular
Downpipe
Rectangular
Downpipe
RP94566
Net Result -1.35L/s
PROPOSED HOUSE PLAN 36.00
0Ø
15
108
79 RP94566
150Ø
RP94566 100mm EasyDRAIN Pressed
Galvanised Steel Grate
RL 33.9
I/O 35.00
38.00
PROPOSED
POOL (10.5m²)
CONCRETE
100Ø
150Ø
DRIVEWAY
34.00
.00
37
EDWARD STREET
.00 34.00
.00
35
36
0 5 10 15 20 Metres
Scale 1:150
No. Description Date ADAM FLANAGAN & SHANE TYE APPROVED
AAA Design & Development Pty Ltd Jose David Lesmes Tirado STORMWATER MANAGEMENT PLAN
34/13 Norval Court, MAROOCHYDORE, QLD 4558 164 Edwards St,
Project number T081-01
Tel/Fax: (07) 5479 6747
SUNSHINE BEACH QLD
Mob: 0422 039 247 Date 25/01/2022 3497 - 19
design & K.A.J
BEng, MIEAust, RPEQ 7198 Drawn by
email: [email protected] For & on behalf of AAA
PROPOSED DUPLEX Design & Development Consulting Checked by D.L.T. Scale @ A3 1:100
Page 5
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