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Filtering by: Creator Mahaffee, W. F. Remove constraint Creator: Mahaffee, W. F. Committee Member Gambatese, John Remove constraint Committee Member: Gambatese, John Degree Field Civil Engineering Remove constraint Degree Field: Civil Engineering

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  • The influence of seismic attack and chloride-induced corrosion on a life cycle inventory assessment of different concrete mixtures

    Creator:
    Christiansen, Joshua W.
    Abstract:
    The life cycle assessment (LCA) process is a systematic approach to determining the environmental impacts of different products and processes. LCA is a relative approach that requires functional equivalence for the results to be compared. A method is presented that achieves functional equivalence by equating the reliability indexes being compared....
    Resource Type:
    Masters Thesis
    Full Text:
                                                    AN ABSTRACT OF THE THESIS OF Joshua W. Christiansen for the degree of Master of Science in

  • Testing and evaluation of flexural reinforcing bars terminating in columns

    Creator:
    Koester, Carl C.
    Abstract:
    Capacity of transverse 1950's vintage reinforced concrete deck girder bridge bent caps with large straight bar anchorages were investigated and evaluated. Eleven subassemblage column specimens were examined with different anchorage lengths, bar groupings, amount of transverse steel, and externally applied axial force. Test results showed an increase in anchorage capacity...
    Resource Type:
    Masters Thesis
    Full Text:
    f' D (max 500) c 4.8 f' D (max 500) AASHO 1973(USD Development Length) - c4

  • Automated Monitoring of Construction Operations for Data-Driven Decision Making

    Creator:
    Rashid, Khandakar, M.
    Abstract:
    The continuous improvement of construction operations requires a systematic approach of monitoring and making appropriate control actions. However, the lack of real-time information hinders this workflow and eventually compromises timely and effective decision-making. Project managers spend a great deal of time and effort to solve problems emerging from lack of...
    Resource Type:
    Dissertation
    Full Text:
    Figure 2.15. Overall performance of the LSTM model for all three equipment ........ 47 Figure 2.16. F-1

  • Automated Chemical Acidification Testing of Cementitious Materials

    Creator:
    Zaw, Myo
    Abstract:
    Due to its availability, versatility, structural capability, and economic advantages, concrete is the most widely used material in building sewer networks and other wastewater structures such as treatment stations, wastewater digesters, septic tanks, pumping stations, hydraulic risers, utility risers and covers, etc. Concrete structures exposed to sewer environments can experience...
    Resource Type:
    Masters Thesis
    Full Text:
    Chemical Acidification Testing of Cementitious Materials Abstract approved: W. Jason Weiss

  • Behavior of open grid steel bridge decks under service and fatigue loads

    Creator:
    Fetzer, Peter C.
    Abstract:
    Open grid steel bridge decks have been in use for nearly a century. These open grid decks provide an economical and lightweight alternative to traditional reinforced concrete decks. As the transportation infrastructure continues to deteriorate, open grid decks can be used as a cost effective way to rehabilitate structurally deficient...
    Resource Type:
    Masters Thesis
    Full Text:
    ............................................................. 83 Figure 5.29: ‘F’ crack initiation from fillet weld

  • Effects of soil slope on lateral capacity of piles in cohesive soils

    Creator:
    Nimityongskul, Nontapat
    Abstract:
    Pile supported bridges are typically constructed near or in a natural or man-made slope and are subjected to lateral loading. The current design method for laterally loaded piles involves the use of Winkler's spring concept with the standard nonlinear p-y curves. The available p-y curves were developed based on results...
    Resource Type:
    Dissertation

  • Evaluation of system effects and structural load paths in a wood-framed structure

    Creator:
    Martin, Kenneth G.
    Abstract:
    The objective of this project was to develop an analytical model of a light-framed wood structure using a prevalent structural analysis computer program in order to evaluate system effects and define load paths within the structure, especially under extreme wind events. Simplified modeling techniques and material definitions were developed and...
    Resource Type:
    Masters Thesis
    Full Text:
    to Nailing Schedule of Sheathing ............................ 109 F Influence Functions – Contour

  • Bridge Inspection Using Bridge Information Modeling (BrIM) and Unmanned Aerial Systems (UASs)

    Creator:
    Xu, Yiye
    Abstract:
    Bridge inspection is a critical task needed to monitor bridge quality and serviceability. In the U.S., 40% of bridges are more than 50 years old while most bridges are typically designed for a lifespan of 50 years. 9.1% of the 614,387 bridges across the U.S are considered structurally deficient. These...
    Resource Type:
    Masters Thesis
    Full Text:
    image 𝑓. Since the gray levels of cracks are usually lower than those of other regions, a bottom-hat

  • 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:
    (1) where Ǭ is the range of peak heat release rates, ƿ is the material density, cp is the

  • Perceived Effectiveness of Highway Work Zone Intrusion Mitigation Technologies: A State DOT Perspective

    Creator:
    Kadalli, Manjunath Veeresh
    Abstract:
    Highway work zones are extremely dangerous environments due to the presence of workers near high-speed traveling vehicles. This dynamic environment results in a disproportionate number of accidents that cause injury and casualty to both drivers and workers due primarily to vehicular intrusions into work zones. Several emerging work zone intrusion...
    Resource Type:
    Masters Thesis
    Full Text:
    (Lioa, 2019). f. Intrusion Detection with Computer Vision and Ranging (e.g., SmartCone): SmartCone