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  • All fields: Civil and Environmental Engineering
(194 results)



Display: 20

    • Development of a Frost Heave Test Apparatus

    • Development of a Frost Heave Test Apparatus

    • frost heave, Montana, silt, tube suction test, pavement, roadbase

    • Frost heave damage to roadways costs millions of dollars every year. The need for an improved understanding of the fundamental mechanisms associated with frost heave and methods for efficiently improving frost-susceptible materials prompted the...
    • ETD
    • Computer-Based Instruction for Engineering Education in the Developing World

    • Computer-Based Instruction for Engineering Education in the Developing World

    • engineering, education, model-centered, instruction, computer, sedimentation, hydraulics, simulation, instructional, multimedia

    • Although civil engineers continually develop new ways to solve problems involving water, energy, infrastructure and environmental sustainability, these innovations can take years – or even decades – to reach developing countries. ...
    • ETD
    • Buckling-Restrained Braced Frame Connection Design and Testing

    • Buckling-Restrained Braced Frame Connection Design and Testing

    • steel frame, steel frames, steel connection, steel connections, brace, braces, structrual engineeering, structural, structures, structural design, steel design, steel connection design, steel testing, testing, design, hysteresis, hysteretic...

    • As typically designed, the beam-column-brace connections of buckling-restrained braced steel frames have undesirable failure modes that compromise the integrity and performance of the frames and are costly to repair. To decrease the time and...
    • ETD
    • Isogeometric Finite Element Analysis Using T-Splines

    • Isogeometric Finite Element Analysis Using T-Splines

    • T-splines, B-splines, NURBS, isogeometric analysis, finite element analysis

    • Non-uniform rational B-splines (NURBS) methodology is presented, on which the isogeometric analysis is based. T-splines are also introduced as a surface design methodology, which are a generalization of NURBS and permit local refinement....
    • ETD
    • Statnamic Lateral Loading Testing of Full-Scale 15 and 9 Group Piles in Clay

    • Statnamic Lateral Loading Testing of Full-Scale 15 and 9 Group Piles in Clay

    • statnamic, piles, pile, lateral, foundation, dynamic, full-scale, Broderick, Rollins, BYU, thesis, engineering, damping, stiffness

    • Studies of seismic and impact loading on foundation piles is an important and a focused interest in the engineering world today. Because of seismic and other natural events are unpredictable, uncontrollable and potentially unsafe it is a vital...
    • ETD
    • Evaluation of Laboratory Durability Tests for Stabilized Subgrade Soils

    • Evaluation of Laboratory Durability Tests for Stabilized Subgrade Soils

    • freeze-thaw, vacuum saturation, tube suction, subgrade, silt, clay, fly ash, lime-fly ash, lime, cement, stabilization, stabilizer, durability, cold regions engineering, road subgrade, frost heave

    • The Portland Cement Association commissioned a research project at Brigham Young University to compare selected laboratory durability tests available for assessing stabilized subgrade materials. Improved understanding of these tests is needed to...
    • ETD
    • Resolving Problems in Engineering Ethics: Precept and Example

    • Resolving Problems in Engineering Ethics: Precept and Example

    • Resolving, Problems, Engineering, Ethics, Precept, Example, Ethical, Judgement, Framework, Decisions, Virtues, Gospel, Jesus, Christ

    • This thesis has served to accomplish several objectives. First, a foundation was laid for the consideration of ethical factors in an engineering context. This was done by first establishing the need for ethical judgement in the engineering...
    • ETD
    • Seismic Response of Stiffening Elastic Systems

    • Seismic Response of Stiffening Elastic Systems

    • earthquake engineering, response history analysis, performance based design

    • Traditional seismic load resisting systems in buildings are designed to undergo inelastic deformations in order to dissipate energy, resulting in residual displacements. This work explores an approach to eliminate these residual displacements. ...
    • ETD
    • Full-Scale Lateral-Load Tests of a 3x5 Pile Group in Soft Clays and Silts

    • Full-Scale Lateral-Load Tests of a 3x5 Pile Group in Soft Clays and Silts

    • deep foundations, piles, static, dynamic, lateral load test, laterally loaded piles, laterally loaded pile groups, LPILE, GROUP, p-multipliers, p-y curves, steel pipe piles, closely spaced piles, group effects, shadowing theory, shadowing effects,...

    • A series of static lateral load tests were conducted on a group of fifteen piles arranged in a 3x5 pattern. The piles were placed at a center-to-center spacing of 3.92 pile diameters. A single isolated pile was also tested for comparison to the...

    • ETD
    • Influence of Consolidation and Interweaving on Compression Behavior of IsoTruss™ Structures

    • Influence of Consolidation and Interweaving on Compression Behavior of IsoTruss™ Structures

    • IsoTruss, Composites, Grid Structures, Carbon Fiber, Lattice Structures, lightweight structures, consolidation, compression, interweaving, braiding, ultimate strength

    • Composite IsoTruss™ structures incorporate intersecting longitudinal and helical members. At the intersections, the fiber tows can be interwoven to achieve mechanical interlocking for increased joint integrity. Interlocking introduces gaps and...
    • ETD
    • Floodplain Risk Analysis Using Flood Probability and Annual Exceedance Probability Maps

    • Floodplain Risk Analysis Using Flood Probability and Annual Exceedance Probability Maps

    • Floodplain delineation, Hydrology, Hydraulics, Hydrologic and Hydraulic Modeling, Uncertainty, Risk Analysis, Stochastic Modeling, Rainfall, Runoff

    • This research presents two approaches to determining the effects of natural variability and model uncertainty on the extents of computed floodplain boundaries. The first approach represents the floodplain boundary as a spatial map of flood...
    • ETD
    • Coordinated Regional and City Planning Using a Genetic Algorithm

    • Coordinated Regional and City Planning Using a Genetic Algorithm

    • coordinate, planning, regional, land use, transportation, genetic algorithm, multiobjective, city, conflict, objectivity, automation, scenario, street

    • Improved methods of planning are needed to deal with today’s issues of traffic congestion, sprawl, and loss of greenspace. Past research and recent legislation call for new methods that will consider a regional perspective. Regional planning...

    • ETD
    • Performance of Concrete Bridge Deck Joints

    • Performance of Concrete Bridge Deck Joints

    • concrete bridge deck joints, joints, performance, design, installation, maintenance

    • The purpose of this research was to identify the types of joints available for use on concrete bridge decks and to investigate the performance characteristics of each type, including primary functions and movement ranges. Eleven reports on...

    • ETD
    • Flexural Behavior of Carbon/Epoxy IsoTruss Reinforced-Concrete Beam-Columns

    • Flexural Behavior of Carbon/Epoxy IsoTruss Reinforced-Concrete Beam-Columns

    • IsoTruss, carbon/epoxy, composite, flexure, curvature, deflection, four point bending test, corrosion resistance, beam-column

    • This thesis quantifies the flexural behavior (strength, stiffness and failure) of IsoTruss®-reinforced concrete beam-columns for use in deep foundation pile applications. Four-point bending tests were performed in the laboratory on two...
    • ETD
    • Floodplain and Flood Probability Mapping Using Geodatabases

    • Floodplain and Flood Probability Mapping Using Geodatabases

    • floodplain mapping, flood probability, hydrology, hydraulics, hydrologic and hydraulic modeling, ArcObjects, geodatabase, WMS, flood insurance rate map

    • This research presents methods of creating digital maps for floodplain delineation and flood probability studies and storing them in a geodatabase. Methods for creating a geodatabase for water resources outside of a GIS are presented. The...
    • ETD
    • Size Function Based Mesh Relaxation

    • Size Function Based Mesh Relaxation

    • mesh relaxation, mesh smoothing, mesh improvement, mesh optimization,, mesh quality, mesh generation, size functions.

    • This thesis addresses the problem of relaxing a finite element mesh to more closely match a size function. The main contributions include new methods for performing size function based mesh relaxation, as well as an algorithm for measuring the...
    • ETD

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