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Filtering by: Creator Leichti, Robert J. Remove constraint Creator: Leichti, Robert J. Degree Name Master of Science (M.S.) Remove constraint Degree Name: Master of Science (M.S.)

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  • Predicting the thermo-mechanical behavior of a gypsum-to-wood nailed connection

    Creator:
    Fuller, James J.
    Abstract:
    With high costs of testing and rating a structural system for fire resistance, the utilization of computer simulations that approximate the integrity of structural subsystems could conceivably reduce development costs. Before an analysis of a light-frame wood system can occur, information on the components of the substructure must be known....
    Resource Type:
    Masters Thesis

  • Hybridized framing to modify load paths and enhance wood shearwall performance

    Creator:
    Bultena, Sarah M.
    Abstract:
    Heavy timber framing relies primarily on bracing to withstand lateral loads due to earthquakes and wind events. Bracing configurations in heavy timber framed buildings vary widely and include cross bracing, knee bracing, and other geometries. Many heavy timber frames constructed during colonial American times are still standing, exceeding the expected...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: ______________________________________________________________ Robert J. Leichti

  • The effects of nail bending-yield stress and biological deterioration on the cyclic performance of shearwalls

    Creator:
    Anderson, Erin N.
    Abstract:
    Key parts of the lateral force resisting system in wood-frame buildings are the shearwafls and the connections. The connections in wooden buildings are the primary source of ductility and energy dissipation; these are essential properties when buildings are exposed to lateral forces, such as wind and earthquakes. Shearwall design is...
    Resource Type:
    Masters Thesis
    Full Text:
    Abstract approved: Robert J. Leichti Key parts of the lateral force resisting system in wood-frame

  • Wood materials and shearwalls of older light-frame residential structures

    Creator:
    Carroll, Cameron T.
    Abstract:
    Light-frame construction practices and materials have changed greatly over the past 100 years. Contemporary research has focused on modern construction; thus, we know a great deal about the behavior of modern lightframe buildings under lateral forces. However, there are many light-frame buildings that were built prior to the introduction of...
    Resource Type:
    Masters Thesis
    Full Text:
    Robert J. Leichti Light-frame construction practices and materials have changed greatly over the

  • Nonlinear finite-element modeling of intercomponent connections in light-frame wood structures

    Creator:
    Groom, Kevin
    Abstract:
    Nailed connections have nonlinear load-displacement relations. Modeling these connections in an assembled structure would require a great amount of computational time because of the large number of degrees of freedom. Replacing these connections with energetically-equivalent nonlinear springs reduces the number of degrees of freedom, and leads to computational efficiency in...
    Resource Type:
    Masters Thesis

  • Assessing biaxial strength characteristics of wood-based structural panels

    Creator:
    Cheng, Ping, 1960-
    Abstract:
    Biaxial strength characteristics of wood-based structural panels were evaluated by using analytical and experimental methods. Cruciform plywood specimens were tested under biaxial tensile-tensile, compressive-compressive loadings in a symmetrically-jointed- arm test fixture, which was mounted on a universal testing machine. Performance of the test fixture was also evaluated during the tests....
    Resource Type:
    Masters Thesis

  • Slotted-bolted friction damper as a seismic energy dissipator in a braced timber frame

    Creator:
    Tjahyadi, Alfred
    Abstract:
    Friction dampers have been used successfully to dissipate seismic energy in steel and concrete structures. The application is new to timber structures. The objectives of this research were to design a slotted bolted connection (SBC) and evaluate its potential as a passive energy damper in timber brace. The research was...
    Resource Type:
    Masters Thesis
    Full Text:
    protocol. The six SBCs were later assembled in pairs to make three dual Robert J. Leichti Rakesh Gupta

  • Establishing a through-boring pattern and method of test for utility poles

    Creator:
    Elkins, Lori A.
    Abstract:
    The goal of this study was to optimize a through-boring pattern that will provide adequate preservative penetration while minimizing the reduction in overall pole bending strength. Hole spacing was developed using longitudinal and transverse chemical penetration data from previous studies. Finite element analysis was used as a preliminary assessment tool...
    Resource Type:
    Masters Thesis
    Full Text:
    THROUGH-BORING PATTERN FOR UTILITY POLES Lori Elkins, Jeffrey J. Morrell, and Robert J. Leichti Wood and

  • The effects of supercritical CO₂ on the bending properties and treatment defects of four refractory wood species

    Creator:
    Anderson, Matthew E.
    Abstract:
    It is difficult to treat the heartwood of many wood species with liquid preservatives using conventional liquid processes. Supercritical fluids (SCF) used as carriers of preservatives to impregnate refractory wood species may be an attractive alternative to conventional liquid carriers. While SCF impregnation has many potential advantages, some wood species...
    Resource Type:
    Masters Thesis
    Full Text:
    ;....,.,,,.a.+-=:t-.1 ---.uf--71'-- ___ , __________ _ I L.-.!...L....1 T.:>fl"r.:>u T l\tf nrr~ll Robert J

  • Flow characteristics of co-flowing, laminar streams in a rectangular microchannel

    Creator:
    Oak, Jason
    Abstract:
    The effects of varying flow rate ratio and Reynolds number on the momentum diffusion and flow development of two co-flowing, laminar streams in a rectangular microchannel are presented. The microchannel has an aspect ratio of approximately 16 with a width of 1006 μm and a height of 63 μm. A...
    Resource Type:
    Masters Thesis
    Full Text:
    my thanks to the other members of my committee, Dr. Richard Peterson and Dr. Robert Leichti. I