Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 118 for “"Drainage systems"”.
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Hydrologic Modeling of Irregular Tile Drainage Systems
… need to prescribe a spacing parameter for tile drainage and, therefore, is applicable to irregular tile drainage systems. When applied to a watershed in east-central Illinois (Upper Little Vermilion River watershed), the model was able to simulate observed trends, such as the minimal surface …
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Modelling of urban stormwater drainage systems using ILSAX
… quality in rivers and receiving waters. Urban drainage systems are used to manage urban stormwater. For design of effective and economic urban drainage systems, it is important to estimate the design flows accurately. Many computer based mathematical models have been developed to study …
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Decentralized model predictive control of urban drainage systems
… model. The inherent nonlinear behaviors of the drainage systems were accommodated by introducing binary variables and linear inequalities to merge different modes of operation into a single expression. The objective function is constituted by 3 cost functions considering several priorities. …
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Integrating the planning of green spaces and sustainable drainage systems
… In some established urban areas the existing drainage infrastructure is unable to cope with the volume of surface runoff and flooding events are more frequent, therefore new approaches to create more space for water within developments are required. This research was conceived in that context. …
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Design tools and performance evaluation of uncoupled subsurface drainage systems
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
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A comprehensive environmental and economic sustainability assessment of roadway drainage systems
The primary goal of roadway drainage systems is to quickly remove water from the roadway area to keep driving lanes safe; therefore, these systems are designed to quickly convey water that enters as runoff. However, this runoff carries pollutants (largely originating from vehicles) that travel …
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The measurement and reduction of urban litter entering stormwater drainage systems
The purpose of this thesis is to describe the results of this monitoring programme and to set out generic guidelines for litter management in South African urban catchments.
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Behaviour and effectiveness of in-ground sustainable urban drainage systems in Scotland
… are the most common types o f sustainable urban drainage systems (SUDS) in Scotland. Despite their extensive use there has been only limited examination of their performance, with the general expectation that failure through lack of maintenance and poor detailing design would necessitate …
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A study of the transport of solids in hospital above ground drainage systems
… transport of solids in "horizontal" above ground drainage pipes was the subject of an investigation aimed at establishing a method for the design of deposit free drainage systems. Tests were based on the measurement of solid velocity in a discharge pipe of variable gradient, the solid being a …
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Development of life cycle assessment model for permeable pavements and road drainage systems
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-12-01
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Century City as a case study for Sustainable Drainage Systems (SuDS) in South Africa
South Africa's developing cities are experiencing rapid urbanisation, particularly in the major metropolises. Infrastructural development is a prominent component of the South African economy, and has been allocated hundreds of billions of Rands by the budgetary council in the present political …
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Managing nutrient flows into the Zandvlei Estuary, Cape Town using Sustainable Drainage Systems (SuDS)
… which are largely comprised of conventional drainage systems which carry stormwater pollutants into the watercourses that then drain into the estuary. Of the many pollutants that flow into the estuary, elevated nutrient levels (specifically phosphorus and nitrogen) are a major concern because …
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Linking sustainable drainage systems (SuDS) together with ecosystem services and disservices : new connections in urban ecology
… and wildlife well-being negatively. Sustainable drainage systems (SuDS) have the potential to mitigate these effects and also provide additional amenity and biodiversity benefits. However, the current SuDS approach is site-specific and technically focused, hence, failing to generate anticipated …
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The social dimension of stormwater management practices including sustainable urban drainage systems and river management options
… of new and modified stormwater management systems. Recommendations and barriers to the uptake outlined in this thesis mainly refer to the appearance of schemes rather than technical issues. They are therefore of most use as guidance for improving aesthetics and increasing public …
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The effectiveness of certain sustainable urban drainage systems in controlling flooding and pollution from urban runoff
… addressed the performance of Sustainable Urban Drainage Systems (SUDS) at three sites in Scotland - a porous paved car park and two swales. It is the first research to provide results for such systems in the UK and also the first direct comparison between SUDS and traditional systems in situ. …
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Managing the Water Quality of the Zandvlei Estuary using Sustainable Drainage Systems in the Diep Catchment
… volumes and runoff rates in the stormwater drainage systems. In South Africa, stormwater drainage systems conventionally channel everything they collect into receiving water bodies without significant treatment or intervention to remove harmful substances. Sustainable Drainage Systems (SuDS) …
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Quantifying stormwater pollutants and the efficacy of sustainable drainage systems on the R300 highway, Cape Town
… natural environment. In particular, highway drainage presents a high risk of pollution when compared to other urban land use areas (Ellis et al., 2012); introducing heavy metals, suspended solids and hydrocarbons to urban waterways. This research investigated runoff from the R300 highway, …
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Applying sustainable urban drainage systems to urban floods management in area 49 planned settlement in Lilongwe City, Malawi
… Mkombezi titled: “Applying Sustainable Urban Drainage Systems to Urban Floods Management in Area 49 Planned Settlement in Lilongwe City, Malawi”. Currently, there is a frequent occurrence of urban floods in Lilongwe City with Area 49 being the most hit neighbourhood which is also the study …
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Rapid decision support tool based on novel ecosystem service variables for retrofitting sustainable drainage systems in the presence of trees
… support tool for different professions such as drainageengineers and urban planners, which is useful for a quick assessment of the potential ofecosystem services when retrofitting sustainable drainage systems (SUDS) in urban areasTherefore the aim is to develop adecision support tool for …
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