Civil and Environmental Engineering Commons^™

Investigation Of Usage Of Velocity And Pressure Data Within A Water Distribution Lab Model For Calibrating Hydraulic Models, Robert Craig Ashby

Theses and Dissertations--Civil Engineering

Water distribution modeling for hydraulics and water quality is an important tool for managing system performance of water utilities. An important component of a water distribution model is the calibration of a network model with field data in the real world system. The calibration effort requires a protocol or selection criteria for the location of field measurements that best support the calibration effort. A water distribution model was constructed at the University of Kentucky hydraulics lab for the purpose of investigating the performance of water distribution models. The lab model contains numerous hydraulic (pressure, flows) and water quality (concentrations) sensors ...

Retrofit Of Structural Steel Columns Using Frp-Concrete Composite Systems, Joel Linde

Open Access Dissertations and Theses

Fiber reinforced polymer (FRP) - confined concrete-steel composite columns have been recently introduced as a retrofit technique for structural steel columns. This technique involves placing an FRP tube around an in situ steel column and subsequently filling the void between the steel section and the FRP tube with concrete to create a composite column. The composite action occurs due to the concrete encasing the steel section and the FRP confining the concrete. An experimental investigation has been undertaken to evaluate: the effect of adding a steel W section to confined concrete; the effect of using a split tube system as a ...

Experimental Studies Of Scale Model Drag Embedment Anchors (Deas) Subjected To Impulse Forces, Tiffany Z. Monaco

Civil and Environmental Engineering - Theses

The goal of this research is to increase the understanding of the performance of drag embedment anchors (DEAs) under a dynamic impulse force to inform the design of mooring systems subject to impulses. The research methodology included scale-model testing, data analysis, and comparison with other performance predicting methods. The investigation was conducted on a 1/6th scale model Danforth-style drag embedment anchor in cohesionless soil subjected to an in-plane impulse force. For all impulse forces less than 0.8 seconds, the DEA consistently held up to 200% of the maximum quasi-static holding capacity. For very short impulses, less than 0 ...

Soil Erosion And Surface Water Quality Impacts Of Natural Gas Development In East Texas, Usa, Matthew W. Mcbroom, Todd Thomas, Yanli Zhang

Forestry

Due to greater demands for hydrocarbons and improvements in drilling technology, development of oil and natural gas in some regions of the United States has increased dramatically. A 1.4 ha natural gas well pad was constructed in an intermittent stream channel at the Alto Experimental Watersheds in East Texas, USA (F1), while another 1.1 ha well pad was offset about 15 m from a nearby intermittent stream (F2). V-notch weirs were constructed downstream of these well pads and stream sedimentation and water quality was measured. For the 2009 water year, about 11.76 cm, or almost 222% more ...

Dynamic Field Test Of A Model Levee Founded On Peaty Organic Soil Using An Eccentric Mass Shaker, E. T. Reinert, S. J. Brandenberg, J. P. Stewart, R. E.S. Moss

Civil and Environmental Engineering

A dynamic field test of a model levee was performed to study the behavior of very soft and compressible peaty organic soils that commonly underlie levees in the Sacramento / San Joaquin Delta in northern California. This first-of-its-kind test applied dynamic loads to the levee/peat system using a large eccentric mass shaker mounted on the levee crest. Loads from the shaker and the inertia of the levee section are transmitted to the peaty organic soils as base shear stresses, and rotational demands that manifest as normal pressures at the embankment/peat interface. We seek to characterize the transmission of seismic ...

Micro-Aeration Of Sulfide Removal From Biogas, Shihwu Sung, Samir Kumar Khanal, Thanapong Duangmanee

Iowa State University Patents

No abstract provided.

Itc-Euromaster Course Pool For Aec Engineers, Alan Hore

Conference papers

The paper describes the ITC-Euromaster Course Pool. It is a concept that powers e-learning environment for conducting an international Master’s level programme in information technologies for Architecture, Engineering and Construction (AEC). The e-learning environment integrates resources (units of study, learning management system, virtual classroom, teachers and students) from five European universities. In the paper following aspects of the system are presented: concept and methodology of the Course Pool, technology for e-learning and evaluation results.

Transient Effects On Dynamic Torque For Butterfly Valves, Trevor N. Price

All Graduate Plan B and other Reports

Butterfly valves are versatile components widely used in hydraulic systems as shutoff and throttling valves. Butterfly valve components must be able to withstand the forces and torques that are generated with use. Dynamic torque data are usually obtained in a test lab for a variety of steady state flow conditions; however the dynamic torque under transient (unsteady flow) conditions may be significantly different than that found in the laboratory. If a valve is closed too fast, especially in long systems, large transient pressures are generated and travel as waves through the pipeline. These transient waves increase the pressure difference across ...

A Method To Quantify Road Safety Audit Data And Results, Joshua Reid Jones

All Graduate Theses and Dissertations

The research presented in this thesis is the result of field data collection conducted by the Utah Local Technical Assistance Program (Utah LTAP) in conjunction with the Utah Department of Transportation. The first step of the research was data collection from 18 road safety audits conducted throughout the state of Utah. These Road Safety Audits (RSA's) provided a wide variety of data that was used for the validation of the road safety audit quantification methodology. The purpose of this research is to provide quantification to the RSA process that will increase the benefits gained from implementing the RSA recommendations ...

Hazard Classification And Hydraulic Remediation Options For Flat-Topped And Ogee-Crested Low-Head Dams, Riley J. Olsen

All Graduate Theses and Dissertations

The dangerous hydraulic conditions that can form downstream of a low-head dam were investigated. These dangerous hydraulic conditions have been the cause of hundreds of drowning incidents since the construction of the first low-head dams. Two primary objectives were identified for this study, each of which were primarily performed using the Computational Fluid Dynamics software, Flow-3D®, with physical models used to verify the numerical results. The first objective was the identification of a risk factor made up of easily measured parameters that could accurately predict when the dangerous hydraulic conditions are present at a low-head dam. The risk factor that ...

Air Vent Sizing In Low-Level Outlet Works For Small- To Medium-Sized Dams, Nathan W. Wright

All Graduate Theses and Dissertations

The majority of dams contain low-level outlet works, which typically consist of closed conduits that run through the dam, and are used to release water from the reservoir when the water level is below the level of the surface spillways. It is also used to flush the reservoir of sediments and to control the elevation of the reservoir. Low-level outlet works typically consist of a gate that controls the flow within a closed conduit that runs through the dam and an air vent that supplies air behind the gate. In the absence of properly designed air vents, negative pressures may ...

Applications Of Bayesian Statistics In Fluvial Bed Load Transport, Mark L. Schmelter

All Graduate Theses and Dissertations

Fluvial sediment transport is a process that has long been important in managing water resources. While we intuitively recognize that increased flow amounts to increased sediment discharge, there is still significant uncertainty in the details. Because sediment transport---and in the context of this dissertation, bed load transport---is a strongly nonlinear process that is usually modeled using empirical or semi-empirical equations, there exists a large amount of uncertainty around model parameters, predictions, and model suitability. The focus of this dissertation is to develop and demonstrate a series of physically- and statistically-based sediment transport models that build on the scientific knowledge of ...

Using Qual2kw As A Decision Support Tool: Considerations For Data Collection, Calibration, And Numeric Nutrient Criteria, Andrew J. Hobson

All Graduate Theses and Dissertations

The in-stream water quality model, QUAL2Kw, can provide guidance in watershed management decisions by linking changes in nutrient loads to responses in water quality. This model is particularly useful for determining wasteload allocations, aiding in total maximum daily load analyses, and developing numeric nutrient criteria. Unfortunately, states struggle to balance the data collection and modeling requirements to accomplish many of these water quality management tasks due to limited resources. This commonly results in routine data collection and monitoring efforts that do not satisfy the data requirements for modeling. To address this disconnect, this study presents a data collection and parameter ...

An Analysis Of Sulfur Trioxide In Aggregates For Concrete Using An Astm Standard For Portland Cement, Sarah Brunsvold

Celebration of Undergraduate Scholarship

It is well-known that sulfates in concrete can reduce the long term durability of concrete. Sulfates most notably contribute to the problem of sulfate attack, which causes cracking and deterioration of concrete. Some aggregates can contain these sulfates and so can contribute to a reduction in durability. However, there is currently no standard test methodology to determine the sulfate content in the aggregates used to produce Portland cement concrete. The purpose of this research is to apply the current American Society for Testing and Materials (ASTM) standard for analyzing the sulfur trioxide content in Portland cement to measure the sulfur ...

Water Quality Monitoring Of The Little Calumet East Branch Watershed, Nicholas H. Feller, Melissa Dorton

Celebration of Undergraduate Scholarship

The Little Calumet East Branch (LCEB) is a 10-digit hydrologic unit code (HUC) watershed that ultimately discharges into Lake Michigan. The watershed begins in unincorporated LaPorte County and discharges west through unincorporated Porter County, converges with the West Branch of the Little Calumet River, and finally discharges into Lake Michigan via the Burns Ditch Waterway. A water quality monitoring study was performed in the summer of 2012 as part of the watershed management process led by a not-for-profit organization, Save the Dunes. Save the Dunes’ Great Lakes Innovative Stewardship through Education Network (GLISTEN) liaisons initiated weekly monitoring at eleven LCEB ...

Sensitivity Analysis Of A Proposed Model For Removal Efficiency Of Trihalomethanes (Thms) Using Spray Aeration, Aidan Cecchetti

Honors Theses

Trihalomethanes (THMs) form in drinking water treatment systems as a byproduct of chlorination and are problematic from a public health perspective due to their carcinogenic potential and their potential for additional formation throughout distribution systems. Recently, regulations have tightened on THMs in an attempt to reduce the risk of exposure for consumers at the far ends of distribution systems. Due to widespread use of chlorine and the reluctance of drinking water providers to overhaul current treatment systems, research has been undertaken to investigate post-treatment removal of THMs. One such method is spray aeration, whereby water is recycled in water storage ...

Tap Water Treatment And Testing, Matt Oswalt

Anthropology Undergraduate Research (COLA)

Introduction

My research is focused on how the water we drink is cleaned and filtered and whether or not it is safe to drink the water from the tap.

Spurlock, Christy Leigh, B. 1963 (Mss 451), Manuscripts & Folklife Archives

MSS Finding Aids

Finding aid only for Manuscripts Small Collection 451. Paper titled “White Stone Quarry of Bowling Green, KY” written by Christy Leigh Spurlock for a Western Kentucky University history department independent study project. Includes research materials such as maps, deeds, photos, and transcriptions of interviews with former quarry employees and their family members.

Rule High School Athletic Field Renovation, Nathan W. Foust

University of Tennessee Honors Thesis Projects

No abstract provided.

Engineers Without Borders El Salvador Project, Patrick Jentz

TECHxpo

This is a report on an Engineers Without Borders project located in San Juan El Espino, El Salvador. For this project, EWB Montana Tech is working to mitigate an erosion problem that is making it difficult for children to travel to school.