streetscape wsud solutions - water sensitive sa
TRANSCRIPT
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Mellissa Bradley, Program ManagerSA Local Government Officers Assoc.5 May 2017
Streetscape WSUD Solutions
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Water Sensitive SA - established to build the
capacity of all organisations with a role in the
planning, design, approval, construction or
maintenance of new developments and
infrastructure to implement best practice water
sensitive urban design (WSUD)
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Water Sensitive SA Program Partners
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Guiding Principles of WSUD
▪ Re-integrate water back into urban landscape –create microclimate
▪ Re-use of water at source (or close as possible)
▪ Protect receiving water quality (streams and marine)
▪ Fit for purpose water use
▪ Solutions at a range of scales Unions Street Dulwich, B-Pods
(infiltration systems)
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Angas Street, Adelaide adjacent SAPOL Photo: Water Sensitive SA
1. Biofilters / raingardens
2. Infiltration systems
Highlights package –
streetscape solutions
Drawing upon:
Adoption guidelines for stormwater Biofiltration systemsCRC for Water Sensitive Cities.
Designing Streetscape RaingardensDesignFlow.
Construction of WSUD AssetsMaintenance of WSUD AssetsDesignFlow.
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Franklin Street. Image: City of Adelaide
Lochiel Park, (SA)
Brooker Terrace, Richmond Jellicoe Street, Auckland (NZ) Source: DesignFlow
Deacon Ave, Mile End
Raingardens
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Source: Designflow
Raingardens - Overview
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Source: Designflow
Raingardens - Overview
1. Level of overflow
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Source: Designflow
Raingardens - Overview
1. Level of overflow
2. Filter media
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Source: Designflow
Raingardens - Overview
1. Level of overflow
2. Filter media
3. Plant Selection
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Source: Designflow
Raingardens - Overview
1. Level of overflow
2. Filter media
3. Plant Selection
4. Saturated Zone
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Ah ha moments…….
www.ew.com
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Small systems –
no overflow structure, no worries!
Source: DesignFlow
Murchison Street, Mansfield Park
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Raingarden Species Selection
Figure 1 – Raingarden zones for plant selection
Planting zones
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Raingarden Planting zones
Figure 1 – Raingarden zones for plant selection
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Trees & Raingardens
Angas Street raingarden early and established, showing arrangement of filter mediaImages: Adelaide City Council and Water Sensitive SA
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Source: Designflow
Filter media depth - Trees
(>900mm)
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Plant species proven to be
effective at Nitrogen removal
Adapted from EPA Raingarden 500 guidelines
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Plant species proven to be
effective at Nitrogen removal
Adapted from EPA Raingarden 500 guidelines
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Plant species for companion
planting
Adapted from EPA Raingarden 500 guidelines
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Download raingarden guide
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Filter mediaSpecification
Bioretention Technical Design Guidelines:
• References Adoption Guidelines for Stormwater Biofiltration Systems, CRC for Water Sensitive Cities
Key Requirements:
• Hydraulic conductivity of 100-300 mm/hr
• Some organics (3-5%)
• Some silts and clays allowed (<5%)
More information
Water Sensitive SA website
Raingarden 500 Grant Program
Source: Designflow
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Randolph Ave, Streetscape Upgrade
City of Unley
Plan view of Randolph Avenue raingarden locations
Bioretention – raingardens ▪ 10 raingardens of dimensions 1.70-2.10m wide x
6.75-25.5m long)▪ Total area 245m2 (0.5% of impervious contributing
catchment)▪ A saturated zone of 450mm depth to assist plant
viability and storage capacity▪ A design infiltration rate of 160mm/hr through filter
media▪ HDPE lined system with no exfiltration
Stormwater infiltration wells▪ 31 infiltration wells of
dimensions 600x400x450 mm deep
▪ Waterproof membrane top and bottom with geofrabricand 20mm screenings around the perimeter, providing lateral infiltration to adjacent trees and garden beds.
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Typical Raingarden Cross Section
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Raingardens and trees
Raingarden in full sun Raingarden shaded to the west by mature tree
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Infiltration systems the hero
July 2015 - establishment
January 2016 September 2016
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WSUD projects - Images & designs
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WSUD project search
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Infiltration systems
East Parade, Kingswood Source: City of Mitcham
▪ Burnside B-Pods▪ City of Mitcham
- streetscapes and- reserves
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City of Burnside, B-pods
Typical B-Pod layout along a street Source: City of Burnside B-Pod- Installation Source: City of Burnside
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City of Burnside, B-pods
Union Street Dulwich Street tree water cycle showing
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Find case studieswww.watersensitivesa.com/resources/wsud-projects-title/case-studies-page/
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City of Mitcham - Reserves
Letchford Street Reserve, Bedford Park, during constructionCity of Mitcham
Letchford Street Reserve, Bedford Park, after constructionCity of Mitcham
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City of Mitcham – Doncaster Avenue
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City of Mitcham – TreeNet inlets
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PP1 - The case for water sensitive
urban design – cost-benefit analysis
PP2 – life cycle cost analysis
PP3 – Deemed to comply guideline
PP4 – Online stormwater assessment
tool for small-scale development
PP5 - MUSIC Guidelines for SA
PP6 – Review & update of WSUD
technical manual
Our priority projects:
Source: A.King
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PP1 - The case for water sensitive urban design – cost-benefit analysis
PP2 – life cycle cost analysis
PP3 – Deemed to comply guideline
PP4 – Online stormwater assessment tool for small-scale development
PP5 - MUSIC Guidelines for SA
PP6 – Review & update of WSUD technical manual
▪ Suite WSUD standard drawings- pdf and CAD
Our priority projects:
Source: A.King
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Upcoming training & events
Source: Monash University