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Item Information   Holdings       More by this author     Bogle-Boesiger, Larissa, author.     Davis, Todd, thesis advisor     Leitzke, Deanna, committee member     Stahl, Douglas, committee member     Milwaukee School of Engineering     Subjects     Building, Wooden     Structural design     Lumber trade -- Guatemala.     Lumber -- Standards     Tolerance (Engineering)     MSST Project.     Browse Catalog     by author:      Bogle-Boesiger, Larissa, author.      Davis, Todd, thesis advisor      Leitzke, Deanna, committee member      Stahl, Douglas, committee member      Milwaukee School of Engineering       by title:      Identification and s...         MARC Display

Identification and structural properties of untreated lumber from the Joyabaj region of Guatemala : a report submitted to the faculty of the Milwaukee School of Engineering in partial fulfillment of the requirements for the degree of Master of Science in Structural Engineering / by Larissa Bogle-Boesiger. by Bogle-Boesiger, Larissa, author., Davis, Todd, thesis advisor, Leitzke, Deanna, committee member, Stahl, Douglas, committee member, Milwaukee School of Engineering [Milwaukee School of Engineering], [2016] Subjects Building, Wooden   Structural design   Lumber trade -- Guatemala.   Lumber -- Standards   Tolerance (Engineering)   MSST Project. Description:  74 leaves : illustrations, some of which are in color ; 29 cm Contents:  Introduction -- Background -- Visual grading sampling and analysis -- Small clear wood testing -- Appendix A. Visual grading guide -- B. Grading rules from various associations -- C. Pass/fail visual grading guide -- D. Sechum Bridge lumber pile data. The purpose of this research project was threefold: 1) Identify the species of wood used for construction by Engineers Without Borders (EWB) groups in the Joyabaj region of Guatemala, 2) Provide grading information on lumber in the Joyabaj region of Guatemala, as well as a grading guide, 3) Determine design properties of wood used for construction by Engineers Without Borders groups in the Joyabaj region of Guatemala. The results of the project will aid in the design of wood structures by the EWB groups working in Joyabaj. In this project specimens were collected and sent to the Forest Products Laboratory for species identification. Information on the species of wood collected was also taken from the sawyer at the mill where the specimens were collected. Visual grading rules were developed and field tested to determine the grade of the wood. The species options were then verified or rejected by results of small clear wood testing. Two types of tests were performed, static bending and compression parallel to grain, in order to obtain modulus of rupture, ultimate stress in compression parallel to grain, and modulus of elasticity. Specific gravity was also obtained from the specimens. The results showed that there were three different species collected. Design should be performed based on NDS (National Design Standard) values for a No. 3 or No. 2 Eastern White Pine, depending on the level of wood selection in the construction process. Form:  text unmediated volume   Copy/Holding information Location Collection Call No. Status   Walter Schroeder Library Master's Theses AC805 .B63 2016 Available Add Copy to MyList Format: HTMLPlain textDelimited Subject:   Email to:

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