The Effects of Pruning on Wind Resistance of Shade Trees

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dc.contributor.authorPavlis, Michael Williamen
dc.contributor.committeecochairKane, Brian C.en
dc.contributor.committeecochairSeiler, John R.en
dc.contributor.committeememberHarris, James Rogeren
dc.contributor.departmentForestryen
dc.date.accessioned2014-03-14T21:41:12Zen
dc.date.adate2007-09-24en
dc.date.available2014-03-14T21:41:12Zen
dc.date.issued2007-07-06en
dc.date.rdate2007-09-24en
dc.date.sdate2007-07-27en
dc.description.abstractThree tree species, Freeman maple (Acer x. freemanii), swamp white oak (Quercus bicolor (Willd.)) and shingle oak (Quercus imbricaria (Michx.)) were tested before and after pruning to determine the effectiveness of pruning on reducing drag and bending moment. Pruning methods were thin, reduce and raise and meet the requirements set by the American National Standard Institute A300 standards for Tree Care Operations Trees, Shrub, and Other Woody Plant Maintenance - Standard Practices (Pruning). Trees were tested up to speeds of 22.4m*s-1 over 1.6km by driving them in the bed of a truck. Drag, based on a centroid of the crown, and a bending moment was calculated. Drag and bending moment were also normalized by tree mass and crown area. Reduction pruning worked more effectively for Freeman maple and raise pruning for swamp white oak at reducing drag. Simple to measure tree characteristics were analyzed to determine the best predictors of drag and bending moment in the field. Tree mass frequently was the best predictor of drag and bending moment. Information should be used with caution due to the fact that the trees tested were small stature and a limited number of trees were tested.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-07272007-114904en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-07272007-114904/en
dc.identifier.urihttp://hdl.handle.net/10919/43916en
dc.publisherVirginia Techen
dc.relation.haspartETDThesisPavlis.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectbending momenten
dc.subjectpruningen
dc.subjectshade treesen
dc.subjectDragen
dc.titleThe Effects of Pruning on Wind Resistance of Shade Treesen
dc.typeThesisen
thesis.degree.disciplineForestryen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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