Lateral Edge Connection and Withdrawal Capacity of Western Juniper Public

http://ir.library.oregonstate.edu/concern/honors_college_theses/08612q60f

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  • Western juniper (Juniperus occidentalis) is a “native invasive” tree species in Eastern Oregon. It is extremely good at finding and consuming water in arid climates, which makes it difficult for other plant species, especially sagebrush and grasses to survive. Sagebrush and grasses are necessary for the survival of the sage grouse, a threatened species. There is much discussion about harvesting juniper trees to help alleviate the stresses the trees put on the sage grouse and water supply in Eastern Oregon. However, there is not much of a market for juniper wood. Part of the reason is that there are no design values for juniper available, making engineers and designers reluctant to choose juniper for structural applications. The goal of this project is to increase the amount of available information about juniper wood in order to encourage its use in structural applications. To contribute to this goal, this project evaluated the performance of connections involving Western juniper wood and other common wood-based building materials. The tests for this project will include edge lateral nail connection test as per ASTM D 1575, dowel bearing strength test as per ASTM D 5764, and withdrawal test as per ASTM D 1761. Following the testing, the data was analyzed and inferences were drawn about the performance of the species in these types of connections. The results were also evaluated against predictive design equations found in the National Design Specification. The result of this project will help form a material statistic on performance of connections involving western juniper. Western juniper can potentially be an economically important species for rural Eastern Oregon. However, lack of engineering design values for the species and a performance metric for connections impedes its acceptance in mainstream construction. The data obtained in this study suggests that NDS equations can adequately predict connection performance of juniper, provided the specific gravity is known. Key Words: oriented strand board, lateral connections, western juniper
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  • description.provenance : Submitted by Hayley Girod (girodh@oregonstate.edu) on 2017-06-08T22:15:11ZNo. of bitstreams: 2license_rdf: 1536 bytes, checksum: df76b173e7954a20718100d078b240a8 (MD5)GirodHayleyE2017.pdf: 474701 bytes, checksum: e245dd87ef9c247e3486a4e8c8382123 (MD5)
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