TECHNICAL PAPERS
Nov 1, 1991

Design Equation for Multiple‐Fastener Wood Connections

Publication: Journal of Structural Engineering
Volume 117, Issue 11

Abstract

A compact design equation is presented for the design of multiple fastener connections of wood members. It was obtained by algebraic simplification of the Lantos analysis of the unequal load sharing among fasteners in series. This equation can replace the double‐entry tables now used in wood design codes. Those tables are constructed using the Lantos analysis and for simplicity have to ignore certain effects and cover only a limited range of design parameters. In addition to the specification equation, two design aids are derived: (1) A simple expression for the maximum possible capacity of a serial row of fasteners; and (2) an expression for the number of fasteners required to achieve a given row capacity.

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References

1.
Dannenberg, L. J., and Sexsmith, R. G. (1976). “Shear‐plate load distribution in laminated timber joints.” Report No. 361, Dept. Struct. Engrg., School of Civ. and Envir. Engrg., Cornell Univ., Ithaca, N.Y.
2.
Doyle, D. V. (1964). “Performance of joints with eight bolts in laminated Douglas‐fir.” Res. Paper FPL 10, USDA Forest Service, Forest Products Lab., Madison, Wisc.
3.
Isyumov, N. (1967). “Load distribution in multiple shear plate joints in timber.” Pub. No. 1203, Dept. of Forestry, Ottawa, Ontario, Canada.
4.
Kunesh, R. H., and Johnson, J. W. (1968). “Strength of multiple‐bolt joints: influence of spacing and other variables.” Report T‐24, Forest Research Lab., School of Forestry, Oregon State Univ., Corvallis, Oreg.
5.
Lantos, G. (1969). “Load distribution in a row of fasteners subjected to lateral load.” Wood Sci., 1(3), 129–136.
6.
National design specification for wood construction. (1986). National Forest Products Association. Washington D.C.
7.
Soltis, L. A., Hubbard, F. K., and Wilkinson, T. L. (1986). “Bearing strength of bolted timber joints.” J. Struct. Engrg., ASCE, 112(9), 2141–2154.
8.
Stern, E. G. (1940). “A study of lumber and plywood joints with metal split‐ring connectors.” Bull. No. 53, Pennsylvania State Univ., Engrg. Experiment Station, University Park, Pa.
9.
Wilkinson, T. L. (1980). “Assessment of modification factors for a row of bolts or timber connectors.” Research Paper FPL 376, U.S. Dept. of Agric., Forest Service, Forest Products Lab., Madison, Wisc.
10.
Wood handbook: Wood as an engineering material. (1987). Agricultural handbook 72, Forest Products Lab., U.S. Dept. of Agric, Washington, D.C., 4–6.

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Published In

Go to Journal of Structural Engineering
Journal of Structural Engineering
Volume 117Issue 11November 1991
Pages: 3477 - 3486

History

Published online: Nov 1, 1991
Published in print: Nov 1991

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Authors

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John J. Zahn, Member, ASCE
Engr., USDA Forest Service, Forest Products Lab., One Gifford Pinchot Drive, Madison, WI 53705‐2398

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