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Filtering by: Creator Dyrness, C. T. Remove constraint Creator: Dyrness, C. T. Decade 2010-2019 Remove constraint Decade: 2010-2019 Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

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  • A BIM-based Simulation Framework for Fire Evacuation Planning

    Creator:
    Sun, Qi
    Abstract:
    Fire hazards threaten human life and property safety. Since it is unrealistic to study human behavior during a real fire hazard, computational tools are a better choice to computational tools are a better choice to simulate fire growth and human behavior for predicting evacuation performance in chaotic emergency situations. Although...
    Resource Type:
    Masters Thesis
    Full Text:
    different evacuation scenarios………………...………48 4.6 Two-sample t-test on the alarm system effect

  • A Comparison of Formation Factor to Standard Methods to Evaluate Transport Properties

    Creator:
    Whatley, Samantha N.
    Abstract:
    Chloride-induced corrosion is one of the primary causes of the degradation of reinforced steel in concrete structures. Currently, the rapid chloride permeability test (RCPT) is the most specified method to determine the concrete’s resistivity to chloride ingress, thus a determining factor in assessing the durability of concrete. While it is...
    Resource Type:
    Masters Thesis
    Full Text:
    saturation is compared to the porosity obtained by ASTM C-642 [10

  • A Comprehensive Mechanistic Study on Using Fine Lightweight Aggregate to Mitigate Alkali-silica Reaction

    Creator:
    Li, Chang
    Abstract:
    Previous research has shown that using fine lightweight aggregate (FLWA) can be a promising strategy to mitigate alkali-silica reaction (ASR) in mortar and concrete. While several possible theories were proposed by researchers, discrepancies in testing methods, materials, and supporting evidence still exist. Therefore, this study was initiated. There are two...
    Resource Type:
    Dissertation
    Full Text:
    composition of the infilling reaction product was found to be close to C-A-S- H, rather than ASR gel. The Ca

  • A discrete numerical study of micromechanics of sand liquefaction

    Creator:
    Zhang, Lei
    Abstract:
    Liquefaction of saturated granular material due to cyclic loading can result in catastrophic damage to the built environment. The mechanics of liquefaction have been previously studied through field testing, physical modeling, laboratory experiments, and numerical simulations. However, significant questions remain with respect to the particle-scale behavior of granular materials during...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ T. Matthew Evans Liquefaction of saturated granular material due to cyclic loading can

  • A Full-Scale Experimental Investigation of the Bearing Performance of Aggregate Pier-Supported Shallow Foundations

    Creator:
    Martin, John P.
    Abstract:
    Aggregate piers have been used for centuries, with increasing occurrence in the last few decades. Their usage has been driven by land development demand and enabled through equipment and engineering improvements. Understanding the principles controlling bearing capacities and serviceability performance has been an ongoing area of interest for structures supported...
    Resource Type:
    Masters Thesis
    Full Text:
    probe for compaction and c) compacted aggregate lifts as aggregate flows from ground surface (after

  • A Multivariate Comparison of Drone-Based Structure from Motion and Drone-Based Lidar for Dense Topographic Mapping Applications

    Creator:
    Simpson, Chase H.
    Abstract:
    Unmanned aircraft systems (UAS), also known as drones, are an increasingly popular method of collecting surveying and mapping data. Two common drone-based mapping techniques are lidar and structure from motion (SfM) photogrammetry, and a frequently-heard (yet nearly impossible to answer) question is: “which is better?” The most common metric for...
    Resource Type:
    Masters Thesis
    Full Text:
    . .................................................................................................................7 Figure 4 (a-c): The various survey instruments used to complete the control survey of the AOI

  • A New Bonding Model for the Particulate Simulation of Bio-Cemented Sand (with a Side Excursion on Percolation in Granular Mixtures)

    Creator:
    Khoubani, Ali
    Abstract:
    Bio-cementation is a promising method for the liquefiable mitigation of loose saturated sands. In the improvement process a bacterium that can be found naturally in soil deposits is fed urea. The bacterium consumes and breaks down the urea to form ammonium and carbonate. In the presence of calcium, calcium carbonate...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ T. Matthew Evans Bio-cementation is a promising method for the liquefiable mitigation of

  • A novel framework for uncertainty propagation in river systems based on performance graphs using two-dimensional hydrodynamic modeling

    Creator:
    Gifford-Miears, Christopher H.
    Abstract:
    This thesis presents a novel approach for propagation of uncertainty in river systems. Errors in data observations and predictions (e.g., stream inflows), in model parameters, and resulting from the discretization of continuous systems, all point to the need to accurately quantify the amount of uncertainty carried through the modeling process....
    Resource Type:
    Masters Thesis
    Full Text:
    5.108 5.11 5.112 5.114 x 10 5 5.4515 5.452 5.4525x 10 6 U T M N or th in g C oo rd in at es

  • A numerical wave tank based on coupled potential flow-viscous flow model

    Creator:
    Zhang, Yi
    Abstract:
    In this study, a coupled potential flow-viscous flow model is used for numerical wave tank simulation. The solver satisfies all the requirements for such a simulation environment. The coupling scheme is based on a non-overlapping heterogeneous domain decomposition method. In this method, the flow domain consists of two subdomains. In...
    Resource Type:
    Dissertation
    Full Text:
    Tank Based on Coupled Potential Flow–Viscous Flow Model Abstract approved: Solomon C. Yim In this

  • A Remotely Controlled Siphon System for Dynamic Water Storage Management

    Creator:
    Alnahit, Ali
    Abstract:
    This thesis presents an analytical, experimental and numerical study of the initiation of flows in a siphon for rapid and gradual openings of a downstream valve. Three initial water levels in the upstream tank and four final positions for the downstream valve were investigated. Two opening times of the downstream...
    Resource Type:
    Masters Thesis
    Full Text:
    inexpensive method to dynamically manage the storage of ponds and wetlands for flood control. c©Copyright