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Determining load rating capacity of simple log stringer bridges

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Title: Determining load rating capacity of simple log stringer bridges
Author: Lee, Michael
Subject Keywords loading, standard, logging, shear stress, Douglas Fir Log Stringer Bridge
Issue Date: 2009-04-04
Publicly Available in cIRcle 2010-09-21
Series/Report no. University of British Columbia, Forestry Undergraduate Essays/Theses, 2008 winter session, FRST 497
Abstract: This essay uses referenced values of allowable stresses to determine the load rating capacity of a constructed Douglas Fir Log Stringer Bridge. This method compares the applied moments and shear stress from the live vehicle load and the weight of the bridge to the allowable moments and shear stress the bridge is designed to support. The factors which affect the load rating capacity are stringer diameter, depth of gravel decking, span length, stringer species and eccentricity of load. It has been determined that this bridge is capable of safely supporting the Ministry of Forests L-60 On-Highway vehicle loading standard.
Affiliation: Forestry, Faculty of
URI: http://hdl.handle.net/2429/28614
Peer Review Status: Unreviewed

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