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Optimum numbering and sizing of infiltration-based water sensitive urban design technologies in South Australia

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The existing drainage systems consider storm water as a waste product and its main focus is on collecting the runoff from urban catchments as quickly as possible and discharging it into the nearby outlets. Faisal Ahammed discusses the Water Sensitive Urban Design (WSUD) technology, which can be implemented in the urban catchments to minimise the negative hydrological impacts due to urbanisation.

Image courtesy of interviewee. September 3, 2024

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This video is a transcription of an interview discussing a study on water-sensitive urban design (WSUD) technologies in South Australia. The researchers aim to determine the optimum number and size of infiltration-based WSUD systems to manage stormwater and reduce hydrological impacts during urbanization. Unlike traditional drainage systems that focus solely on flood management and often discharge runoff into water bodies, WSUD attempts to retain and utilize stormwater resources.

The researcher notes that while there is substantial literature on technological advancements in WSUD, there is limited practical guidance on implementation in residential development. The study seeks to address this gap by applying statistical methods, specifically linear regression, to evaluate multiple factors affecting WSUD effectiveness, including roof area, rainfall intensity, soil conductivity, and storm management strategies.

The outcomes of the analysis are intended to provide practitioners, such as builders and consultants, with modeling equations to calculate optimal infiltration parameters for specific projects. Future research is suggested to incorporate the impacts of climate change and potentially develop a software tool that can streamline this process for practitioners. Overall, the research aims to improve urban stormwater management through a more sustainable and resource-preserving approach.

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Here are five key points derived from the video:

1. **Objective of the Study**: The main aim of the study is to determine the optimum number and sizing of water-sensitive urban design (WSUD) technologies specifically for the South Australian convideo, in order to improve urban stormwater management.

2. **Water Sensitive Urban Design**: WSUD is presented as an innovative approach that minimizes flooding and hydrological impacts during urbanization, contrasting with traditional drain systems that focus primarily on capturing and discharging runoff, often at the expense of conserving water resources.

3. **Variability in Terminology**: The concept of WSUD is recognized by various names in different regions, such as low impact development (North America) and sustainable urban drainage systems (Europe), highlighting the global relevance and adaptability of the approach.

4. **Research Limitations**: The study indicates a gap in existing research concerning the practical implementation of WSUD technologies at the residential development level, prompting the need for more individualized studies to determine effective solutions for stormwater management.

5. **Statistical Methodology and Future Applications**: The research employs linear regression analysis to identify factors influencing the sizing of infiltration-based WSUD technologies. There is also a proposal for future applications, including the development of software tools that can help practitioners accurately determine appropriate sizes and numbers of these technologies, taking into account factors like rainfall intensity and soil conditions, as well as potential climate change impacts.

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Here are some key quotes extracted from the video:

1. **Aim of the Study**:
- "The main aim... is to find out the optimum numbering and sizing of water sensitive urban design technologies."

2. **Definition of Water Sensitive Urban Design**:
- "Water sensitive urban design is one kind of innovation in urban stormwater management, which minimizes... flooding, hydrological impacts on urbanization."

3. **Critique of Traditional Drain Systems**:
- "By means of our traditional drain system, we are actually losing our available water resources because we are capturing and we are discharging it into the nearby water bodies."

4. **Need for Alternative Options**:
- "So we would like to get an alternative option, which is actually water sensitive urban design."

5. **Importance of Technological Advancements**:
- "Technologically it is actually proven. But... the study is very limited."

6. **Focus on Infiltration Systems**:
- "We took one initiative, whether we can find out the optimum options, optimum numbering and optimum sizing of infiltration based water sensitive urban design."

7. **Factors Influencing Design**:
- "It depends on many factors like... the area of the roof, rainfall intensity, the soil hydraulic conductivity."

8. **Statistical Methodology Used**:
- "So we applied linear regression... considering all those methodology and all those factors."

9. **Objective of the Modeling Equation**:
- "We would like to find out some modeling equation, which could help the practitioner."

10. **Future Directions**:
- "Maybe in future we could include climate change impacts to develop this modeling equation."

These quotes encapsulate the key themes of the study, including the objectives, critiques of existing systems, the significance of water-sensitive technologies, and future implications.

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Here are a few articles related to water-sensitive urban design, stormwater management, and innovative urban planning practices that may align with the themes presented in your video:

1. **"Water Sensitive Urban Design: A Review of the Literature"**
- This article provides an overview of water-sensitive urban design (WSUD) principles, discussing various techniques and their effectiveness in managing urban stormwater. It also touches on case studies and implementation challenges.

2. **"Low Impact Development: A Guide to Stormwater Management"**
- Focusing on low impact development (LID) practices, this guide examines strategies that can effectively manage stormwater runoff, similar to those mentioned in your video. It reviews design practices and their ecological benefits.

3. **"Sustainable Urban Drainage Systems (SuDS) and their Role in Flood Management"**
- This paper describes sustainable drainage systems as an approach to urban stormwater management. It analyzes the effectiveness of SuDS in mitigating flood risks while promoting water conservation.

4. **"Assessing the Impact of Climate Change on Water Resource Management in Urban Areas"**
- Discusses the implications of climate change for urban water management practices, including the potential changes in rainfall patterns and other factors affecting water-sensitive design strategies.

5. **"Modeling Techniques for Optimizing the Design of Green Infrastructure"**
- This article presents modeling approaches to optimize the design and sizing of green infrastructure, such as rain gardens and permeable pavement systems, aligning with the empirical research and modeling aspects highlighted in your video.

6. **"Innovations in Urban Water Management: Integrating Water Sensitive Design with Urban Planning"**
- This publication discusses integrating water-sensitive design concepts within broader urban planning efforts, emphasizing collaboration among stakeholders, policy implications, and practical applications for urban resilience.

7. **"Performance and Optimization of Rainwater Harvesting Systems: A Comparative Study"**
- This study investigates various rainwater harvesting systems, evaluating their performance and effective sizing to determine optimal configurations for different urban settings.

These articles can provide deeper insights into the various elements of water-sensitive urban design, optimization strategies, and the impacts of climate change discussed in your video.

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The main aim, for this study is

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to find out the optimum numbering

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and sizing of water sensitive urban design technologies.

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For South Australian context.

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Uh, water sensitive AR design is one kind

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of innovation in urban stormwater management, which

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minimizes, flooding, hydrological impacts

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in, on urbanization.

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So traditional, practices in the drain system

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through the drain system, we can actually capture the runoff

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as completely as possible, after the rainfall.

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And the main purpose

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of the traditional on the drain system is the flood

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management, but by means of our traditional drain system,

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we are actually losing our available on the water resources

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because we are capturing

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and we are discharging it into the nearby water bodies.

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So we would like to get an alternative option,

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which is actually water sensitive urban design.

00:56.975 --> 01:00.755
So through this, process, we can like, you know, go

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for urbanization, but now strong motor management system in

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such a way it'll minimize the hydro impacts even in the

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urbanization process.

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What have been, some, like in the studies,

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completed in the field of, water sensitive urban design,

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because this term is known as,

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the different terms in different regions.

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Like in North America, it is known as low impact development

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in, Europe and many other countries.

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It is known as sustainable urban drain system.

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In Australia and New Zealand, Singapore, it is known

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as water sensitive urban design.

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And in, in, some areas it is known

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as green infrastructure.

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So if we can combine these terms together, actually,

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the few resources, completed, many

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of them are in the field of, technological advancement.

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So technologically it is actually proven.

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But whenever we consider, like, you know, in,

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individual elopement wise, which is more practical

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to implement, actually the study is very limited.

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So individual, alert wise, the study completed in the areas

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of rainwater tanks,

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but we are looking for other water need alternatives.

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So to manage tro motor runoff in like, you know,

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indu in, in residential development wise, the study

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for water sensor urban design is very limited,

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and that's why we took one initiative,

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whether we can find out the optimum options,

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optimum numbering and optimum sizing

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of infiltration based water sensitive urban design in

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residential element wise in South Austin context,

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the optimum numbering

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and optimum sizing of water

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sensitive urban design technology.

02:43.315 --> 02:46.515
It depends on, many factors like what would be the,

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the area of the roof, what would the rainfall intensity,

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the soil hydraulic conductivity.

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Uh, sometimes the strategy of the TRO motor management

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because, whether we'd like to call it all the

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Runoff or we'd like to collect a partial, runoff.

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And now what is the critical storm duration?

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Like, there are many factors.

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So in order to combine all the factor together, we need

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to find out one statistical methodology.

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So we applied, linear regression, considering,

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all those methodology

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and all those, factors that I, I told you before.

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So like there are three different types

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of infiltration system, SOA

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and infiltration trends.

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So these three types of,

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infiltration systems were applied, considered few,

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variables under few like,

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sub catchments in South Australian.

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In the context we consider like whether a, like, you know,

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rainwater tank could be utilized in the ment wise

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or whether rainwater tank is not included in both way

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through regression analysis, through a statistical,

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the process by applying spss, model

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and considering like some factors, we try

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to find out the optimum numbering

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and sizing of infiltration based water sensor carbon is a

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technologies for southwestern context.

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Uh, we would like to find out some, modeling equation,

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which could help the practitioner

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because the, practitioner whenever, or the builder

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whenever they would like to know construct in housing,

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they would like to understand what would the optimum

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numbering and sizing of infiltration base, technology

04:32.435 --> 04:35.255
and which, technology, among liquid,

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could be the most appropriate.

04:40.075 --> 04:43.375
So now the modeling equation we develop,

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the practitioners and like, you know, real estate builder

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or consulting company could apply those equation

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and they can input other variables

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and they can get the accurate, number

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and sizing of in infiltration based water environment design

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for a particular element.

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It means that once they'll get the sizing

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and optimum numbering, like in the consulting company

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or the builder could understand like

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what is the most appropriate water sensitive technology

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for a particular, development, so

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that it could easily be, constructed in this study.

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Uh, some inputs are swallow hydro conductivity

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or rain for intensity, critical storm duration, et cetera.

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So these parameters could be a change due to the,

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climate change impacts.

05:32.155 --> 05:35.055
So maybe in future we could include climate change impacts

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to develop this, modeling equation.

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But in terms of practice, probably the next,

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like the step could be whether we could develop a software

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or maybe a model, whether like the practitioner

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or consulting open, they can input this model's model,

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input the variables in the model

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and can get the accurate numbering, the sizing

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Of infiltration based water sensitive IES technologies.

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So in, in short, like

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climate change impacts could be incorporated,

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for the start, the research findings we completed

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and maybe we would like to develop,

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one software based on the findings, in future.

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