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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 207 for “"drains"”.
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Soil improvement by vertical drains
Vertical drains are used in soft clays and silts to accelerate primary consolidation. In this study a practical method for predicting the magnitude and rate of settlement and pore water pressure dissipation of soft clays under embankment type of loading is described. A computer procedure, ILLICON, …
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Soil-Conduit Interaction and Structural Stability of Mole Drains
… design of corrugated plastic conduits and mole drains is not adequate. Small diameter mole drains and plastic conduits buried in Lloyd clay were examined both experimentally in a laboratory soil bin and numerically by the finite element method, for various loading conditions.
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A Study of Water Flow Patterns Near Subsurface Drains
Made available in DSpace on 2014-12-05T17:37:02Z (GMT). No. of bitstreams: 1 5902042.pdf: 5978080 bytes, checksum: 3f3a6978e676a33e435168ad532fdaf8 (MD5) Previous issue date: 1959
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Techniques to evaluate the field performance of vertical drains
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1983.
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Characterizing transient and seasonal responses of bioreactors for subsurface drains
… of nitrate that enters water bodies from tile drains. Bioreactors provide many advantages that make them a strong candidate for implementation as a best management practice across the Midwest: they use proven technology, require no modification of current practices, require little to no …
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Ground improvement using vacuum preloading together with prefabricated vertical drains
… is applied to the soft soil through the vertical drains, results in an isotropic increase in effective stress within the soil mass, and therefore, can be applied with full intensity in a single stage. On the other hand an equivalent fill preload is applied in stages to avoid instability and …
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Effect of aluminum oxyhydroxide coatings on the performance of limestone drains
Neutralization by limestone is a common treatment for acid mine drainage (AMD). The effectiveness of using limestone to treat AMD can be reduced by aluminum (Al) and iron (Fe) oxyhydroxide coatings that form on the limestone, because the coatings inhibit the transport, and thus neutralization, of …
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Finite element analysis of embankments on soft ground incorporating reinforcement and drains.
… over soft compressible soils containing vertical drains. Secondly, to demonstrate the ability to model accurately such embankments. Finally, to develop simplified procedures to be used in the design of embankments over soft soils. The modifications to the finite element program, CRISP, included …
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Identifying the role of pre-hospital intercostal chest drains in South Africa
Includes abstract. Includes bibliographical references.
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Performance of drains in earthquake-induced liquefaction mitigation under new and existing buildings
… available mitigation techniques. Vertical drains are an effective countermeasure technique, extensively utilised to reduce damage, as rapid dissipation of excess pore pressures can be achieved in case of liquefaction. However, further research using physical and numerical modelling …
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Effects of Inlet Design on Hydraulic Efficiency and Sediment Cleanout of Bridge Deck Drains
Bridge deck drainage is driven by the hydraulic efficiency of inlets, which can be affected by grate design, downspout configuration, and debris accumulation. Inadequate drainage can result in hydroplaning, which can diminish highway safety. To evaluate the controls on drainage inlet efficiency and …
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Numerical simulation of the response of sandy soils treated with pre-fabricated vertical drains
… response of sandy soils treated with earthquake drains, for liquefaction risk mitigation. This thesis describes 1)the implementation of finite 1-D elements to simulate the uncoupled mechanical and flow properties of perforated vertical (PV) drains, 2) the investigation of scaling laws for laminar …
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A comparison of field methods of measurement of the water table drawdown characteristics between lateral tile drains in Brookston clay loam soil and an evaluation of an empirical formula for placing lateral drains
Thesis (M.S.)--Michigan State College of Agriculture and Applied Science. Dept. of Agricultural Engineering, 1953
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Mains, Drains and Strains: The Emergence of Urban Water and Waste Systems in the United States
It has been concluded that the emergence of water and waste systems was the result of the simultaneous and consubstantial emergence of society and technology in a interactive process that defined urban conditions, the problems associated with those conditions, the solutions to those problems and …
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Settlement Analyses of Grade Supported Tanks Constructed with the Use of Prefabricated Wick Drains and an Earth Preload
In the design of tank foundations several design techniques are considered. This study focuses on grade supported tanks constructed under an extensive preload and instrumentation program. Settlement estimation methods were performed and compared to field instrumentation data taken at the project …
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An investigation into the factors affecting the behaviour of Highway Filter Drains, with a particular emphasis on the Scottish Trunk Road Network
… drainage asset takes the form of Highway Filter Drains (HFDs). However, despite their popularity, they are prone to clogging, therefore they have an estimated operational life-cycle of ten-years.This research was undertaken to investigate the complex inter-relationship between catchment …
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Análise de dados piezométricos de um aterro sobre argila mole com drenos verticais
… of IPR-DNER on Sarapui’s soft clay with vertical drains. Initially, the excess poro pressure data from installed Casagrande and Hydraulic piezometers of all the sections are analised and compared. Follows a bibliographical revision of the theory of vertical drains, including a description of the …
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An investigation of leaky sewers as a source of fecal contamination in the stormwater drainage system in Singapore
… for fecal contamination to enter stormwater drains from leaky underground sewer lines in Singapore. The island's drainage channels flow into catchment reservoirs that are used to store water for future supply needs. Singapore's Public Utilities Board wishes to open up the reservoirs for …
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