Horizontal Stiffness of Wood Diaphragms

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dc.contributor.authorBott, James Wescotten
dc.contributor.committeecochairEasterling, William Samuelen
dc.contributor.committeecochairDolan, James Danielen
dc.contributor.committeememberLoferski, Joseph R.en
dc.contributor.departmentCivil Engineeringen
dc.date.accessioned2014-03-14T20:36:28Zen
dc.date.adate2005-05-19en
dc.date.available2014-03-14T20:36:28Zen
dc.date.issued2005-04-18en
dc.date.rdate2005-05-19en
dc.date.sdate2005-05-12en
dc.description.abstractAn experimental investigation was conducted to study the stiffness of wood diaphragms. Currently there is no method to calculate wood diaphragm stiffness that can reliably account for all of the various framing configurations. Diaphragm stiffness is important in the design of wood framed structures to calculate the predicted deflection and thereby determine if a diaphragm may be classified as rigid or flexible. This classification controls the method by which load is transferred from the diaphragm to the supporting structure below. Multiple nondestructive experimental tests were performed on six full-scale wood diaphragms of varying sizes, aspect ratios, and load-orientations. Each test of each specimen involved a different combination of construction parameters. The construction parameters investigated were blocking, foam adhesive, presence of designated chord members, corner and center sheathing openings, and presence of walls on top of the diaphragm. The experimental results are analyzed and compared in terms of equivalent viscous damping, global stiffness, shear stiffness, and flexural stiffness in order to evaluate the characteristics of each construction parameter and combinations thereof. Recommendations are presented at the end of this study as to the next steps toward development of an empirical method for calculating wood diaphragm stiffness.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-05122005-214833en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-05122005-214833/en
dc.identifier.urihttp://hdl.handle.net/10919/32641en
dc.publisherVirginia Techen
dc.relation.haspartBottMastersThesisETD.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectshear stiffnessen
dc.subjectdiaphragm stiffnessen
dc.subjectdiaphragm deflectionen
dc.subjectwood diaphragmen
dc.titleHorizontal Stiffness of Wood Diaphragmsen
dc.typeThesisen
thesis.degree.disciplineCivil Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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