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dc.contributor.authorMohamadzadeh, Miladen
dc.date.accessioned2014-08-20T08:00:33Zen
dc.date.available2014-08-20T08:00:33Zen
dc.date.issued2014-08-19en
dc.identifier.othervt_gsexam:3543en
dc.identifier.urihttp://hdl.handle.net/10919/50271en
dc.description.abstractIn 2012, falls from elevation in construction industry represented 36% of the total fatalities. The Occupational Safety and Health Administration requires workers to use fall protection systems where workers are 6 feet or more above a lower level. Anchors for fall protection systems attached to roof trusses may cause out-of-plane loading on these structures. Metal plate connected wood trusses (MPCWT) are not designed to carry out-of-plane loads and MPCWT performance under these loads are not evaluated in the design process. The goal of this research is to model and analyze MPCWT assemblies under out-of-plane loads. The rotational stiffness of truss-wall connections, and truss bracing elements are included in the structural component model. Previous experimental data of fall arrest anchor loading were used for model validation. A parametric study considering loading location, joint stiffness and dimension of trusses was conducted. The structural analog of the MPCWT assemblies were found to have first truss deflections within 4% difference, thereby the models were validated. From parametric study results, the load location was not changed the ultimate deflection in the truss assembly by maximum value of 9%. Out-of-plane joint stiffness was the parameter that caused a large difference in the deflection results, when the joists were assumed as either rigid or simple connections. The rotational stiffness of lateral and diagonal bracing should be included as model inputs for the accurate representation of experimental behavior. Truss lengths increased the deflection at the top chord of the first truss in the assembly as truss width increased.en
dc.format.mediumETDen
dc.publisherVirginia Techen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectMetal Plate Connected Wood Trussesen
dc.subjectPersonal Fall Arrest Systemen
dc.subjectResidential Constructionen
dc.subjectVisual Analysis Softwareen
dc.subjectJoint Stiffnessen
dc.subjectModeling Validationen
dc.titleAnalysis of Metal Plate Connected Wood Truss Assemblies under Out-of-Plane Loadsen
dc.typeThesisen
dc.contributor.departmentForest Resources and Environmental Conservationen
dc.description.degreeMaster of Scienceen
thesis.degree.nameMaster of Scienceen
thesis.degree.levelmastersen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.disciplineForest Productsen


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