Training Seminar 2 - Oxley Creek, Queensland¶
Session Information¶
Case Study Site: Development in South Brisbane, alongside Oxley Creek, QLD
Recorded on Wednesday 5 June 2019 | 3pm AEST
Instructions¶
Site Background: The area around Oxley Creek are prone to flooding. According to Brisbane Long Term Infrastructure 2012 - 2031 plan, where the flood immunity of an area does not support development, the Brisbane City Council will aim to maximise the use of such spaces, with considerations of recreation, stormwater capture and retention. This opens up future master plans to consider non-traditional design typologies, including a range of water sensitive urban design options. The community vision is that “Oxley Creek will be transformed into a world-class green, lifestyle and leisure destination, befitting our New World City.” Learn more about the Master Plan on Brisbane City Council’s website.
Designing the Scenario We will evaluate 3 scenarios along Oxley Creek of South Brisbane, with the first being the baseline run of the case study area. Each scenario will add a new type of development based on the users’ input informed by potential water sensitive urban design uptake. They are listed below:
Create a new project in Brisbane, and select module: Land Surface Temperature, Water Balance and Catchment Runoff
You will create 2 scenarios in addition to the baseline
Scenario 1: Baseline (upload the boundary file)
Scenario 2: Business as Usual (Medium + High density building)
Scenario 3: WSC Interventions (choice by user)
Files to be used can be access here: Google Drive Folder (or email us for the files)
The team has translated policy documents to digital parameters based on inputs from local authority and experts. Users should read the documentation on each node to understand its effect and application (by accessing ‘Help’). Access to policy or existing documents can come from a range of sources, and for this case study we retrieved files from speaking with urban water practitioners with experience working in Brisbane and Queensland government.
Scenario 2: Business as usual (BAU) Parameter¶
Order of Workflow |
1 |
2 |
Adaptation Node |
Residential |
Residential |
Infrastructure Area |
High Density |
Medium Density |
Parameters |
City block width: 76 City block depth: 200 Street offset: 2.75 City parcel depth: 40 City parcel height: 8 Building width: 16.5 Building length: 36 Building height: 25 Residential units: 10 Hardstand proportion: 0.6 Tree spacing: 15 |
City block width: 115 City block depth: 200 Street offset: 7.5 City parcel depth: 50 City parcel height: 30 Building width: 20 Building length: 45 Building height: 8.5 Residential units: 5 Hardstand proportion: 0.5 Tree spacing: 22 |
Intended output |
Housing for density of 310 dwellings per ha |
Housing for density of 33 dwellings per ha |
Next Scenario: Water Sensitive City (WSC) Options¶
Create the WSC scenario on the Scenario 2 BAU layer, then choose one of the options below to test policy change in the catchment
Options |
1 |
2 |
3 |
4 |
Adaptation Node |
Rainwater harvesting tank |
Tree Pits |
Green Roofs |
Open Space Irrigation |
Infrastructure Area |
Case Study boundary |
Case Study boundary |
Case Study boundary |
Open Space (new file) |
Parameters |
rwht % intake: 100% |
Fraction of trees with tree pits (%): 50 Surface storage: 100 Tree pit area: 15 Tree connected impervious area: 225 Removal rate in: 0.25 |
Fraction of green roofs: 0.5 |
Percentage of irrigated grass: 100% |
Intended output |
Apply to whole catchment, and adds rainwater harvesting tanks to single family homes in the boundary |
Apply tree pit node to whole catchment, and it will calculate based on NEW generated trees created in Scenario 2+3, since the current underlying data does not include existing trees. |
Apply green roofs to 50% of the catchment’s roof areas |
Irrigation for all public parks |
Results¶
Your scenario results should reflect similar visual interpretations, and same land cover results.