Index Catalog // ScholarsArchive@OSU

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:: 1 AN ABSTRACT OF THE THESIS OF Sarah M. Bultena

Nonlinear dynamic analysis of heavy timber frame structures including passive damping devices

Creator:: Eiden, Claudia M. T.
Abstract:: Engineering analysis of heavy timber structures under dynamic loads is generally lacking. Some literature suggests that heavy timber structures are stiffer than expected, but popular engineering opinion is to the contrary. In addition, prior research has shown that passive friction dampers can be used in timber structures for the intended...
Resource Type:: Masters Thesis

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

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

FATE group decision support system in transportation decision making

Creator:: Taekratok, Thaweesak
Abstract:: Two interesting challenges have been created in the traditional transportation planning process through recent adoption of more interactive roles by Federal, State and local transportation agencies and of those representing the communities being impacted by proposed transportation projects. First, the decision-making groups that formerly included solely transportation and related professionals...
Resource Type:: Dissertation

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:: a Through-borinq Pattern and Method of Test for Utility Poles Abstract Approved: Robert J

Uranium and technetium bio-immobilization in intermediate-scale permeable reactive scale barriers

Creator:: Sapp, Mandy M.
Abstract:: Groundwater at Oak Ridge National Laboratory's Field Research Center (FRC) is contaminated with U(VI) and Tc(VII), has pH values as low as 3.3, and nitrate concentrations as high as 120 mM. The objective of this research was to determine if in-situ bio-immobilization is a viable treatment alternative for this water....
Resource Type:: Masters Thesis
Full Text:: . Similar results were obtained in two intermediate-scale ( 3 m long) physical models. Data from the high

Uranium and technetium bio-immobilization in intermediate-scale physical models of an in situ bio-barrier

Creator:: Michalsen, Mandy M.
Abstract:: Metal and hydrogen ion acidity and extreme nitrate concentrations typical of Department of Energy (DOE) legacy waste sites pose formidable challenges to successful implementation of in situ bio-immobilization. Intermediate-scale (~ 2.5 m), flow through models of an in situ bio-barrier were constructed to investigate U and Tc removal from groundwater...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE DISSERTATION OF Mandy M. Michalsen for the degree of Doctor of Philosophy in Civil

Microcosm studies of bioaugmentation with a butane-utilizing mixed culture : microbial community structure and 1,1-DCE cometabolism

Creator:: Lim, Hee Kyung
Abstract:: The 1,1-dichloroethene (1,1-DCE) cometabolic transformation abilities of indigenous and bioaugmented microorganisms were compared in microcosms constructed with groundwater and aquifer solids from the Moffett Field site, CA. Microbial community structure in the microcosms and possible community shifts due to 1,1-DCE transformation stress was evaluated by terminal restriction fragment length polymorphism...
Resource Type:: Masters Thesis
Full Text:: . Robert W. Collier for serving as Graduate Council Representative on my committee. It was very lucky for

ScholarsArchive@OSU

Hybridized framing to modify load paths and enhance wood shearwall performance

Nonlinear dynamic analysis of heavy timber frame structures including passive damping devices

Wood materials and shearwalls of older light-frame residential structures

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

FATE group decision support system in transportation decision making

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

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

Uranium and technetium bio-immobilization in intermediate-scale permeable reactive scale barriers

Uranium and technetium bio-immobilization in intermediate-scale physical models of an in situ bio-barrier

Microcosm studies of bioaugmentation with a butane-utilizing mixed culture : microbial community structure and 1,1-DCE cometabolism

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