Predicting the Bending Yield Strength of Timber Frame Pegs
Publication: Journal of Materials in Civil Engineering
Volume 31, Issue 3
Abstract
Timber frame connections commonly use mortise and tenon connections secured by wooden pegs. The calculation of peg connection strength depends upon the joint dimensions, material properties of the mortise and tenon, and the bending yield strength of the peg. The purpose of this technical note was to measure the bending yield strength of a variety of pegs encompassing the range of wood species and diameters found in timber frame construction. A regression analysis of the bending yield strength data used a series of two-factor and single-factor power and linear equations using specific gravity and diameter as independent variables. A linear equation to estimate the bending yield strength was chosen based upon similarity of results and simplicity of calculation.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
Support for this project was provided by the Timber Frame Engineering Council, Northcott Wood Turning, and Cabin Creek Timber Frames. This work was also supported by the USDA National Institute of Food and Agriculture, McIntire Stennis Project 0229938.
References
ASTM. 2015a. Standard practice for establishing allowable properties for visually-graded dimension lumber from in-grade tests of full-size specimens. ASTM D1990. West Conshohocken, PA: ASTM.
ASTM. 2015b. Standard practice for sampling and data-analysis for structural wood and wood-based products. ASTM D2915. West Conshohocken, PA: ASTM.
ASTM. 2015c. Standard test method for determining bending yield moment of nails. ASTM F1575. West Conshohocken, PA: ASTM.
ASTM. 2015d. Standard test method for direct moisture content measurement of wood and wood-based materials. ASTM D4442. West Conshohocken, PA: ASTM.
ASTM. 2015e. Standard test method for specific gravity of wood and wood-based materials. ASTM D2395. West Conshohocken, PA: ASTM.
AWC (American Wood Council). 2015. National design specification for wood construction. Leesburg, VA: AWC.
McCutcheon, W. J. 1983. “Deflections and stresses in circular tapered beams and poles.” Civ. Eng. Pract. Des. 2: 207–233.
Northcott Wood Turning. 2018. “Price list.” Accessed April 20, 2018. www.pegs.us/price_list.htm.
Sandberg, L. B., W. M. Bulleit, and E. H. Reid. 2000. “Strength and stiffness of oak pegs in traditional timber-frame joints.” J. Struct. Eng. 126 (6): 717–723. https://doi.org/10.1061/(ASCE)0733-9445(2000)126:6(717).
Schmidt, R. J., and R. B. MacKay. 1997. Timber frame tension joinery. Laramie, WY: Timber Frame Business Council.
TFEC (Timber Frame Engineering Council). 2010. Standard for design of timber frame structures and commentary. TFEC-1 2010. Becket, MA: TFEC.
USDA FPL (US Department of Agriculture Forest Products Laboratory). 2010. Wood handbook: Wood as an engineering material. Madison, WI: USDA FPL.
Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 31 • Issue 3 • March 2019
Copyright
©2018 American Society of Civil Engineers.
History
Received: Apr 20, 2018
Accepted: Jul 30, 2018
Published online: Dec 20, 2018
Published in print: Mar 1, 2019
Discussion open until: May 20, 2019
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.