TECHNICAL PAPERS
Jul 1, 1989

Reliability‐Based Design of Wood Structural Systems

Publication: Journal of Structural Engineering
Volume 115, Issue 7

Abstract

A methodology is presented for the study of the reliability of lightframe wood structural systems, with particular consideration given to floors and flat roofs. Reliability levels associated with the bending strength limit state of such systems are computed by first‐order reliability methods, using a structural analysis based on the finite strip method. A system modification factor is derived in relation to a simple design equation for bending, which is suitable for implementation in a limit states design code. Values for the modification factor are studied in relation to different parameters: plate action of the sheathing, the non‐rigid connection between the sheathing and the joists, the variability in the strength and stiffness of the joists, the applied load variability, the geometric parameters of the floor and the definition of system failure. The system modification factor, when applied to the simple design equation based on a single member, ensures a prescribed reliability for the structural system,

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References

1.
Der Kiureghian, A., and Liu, P.‐L. (1986). “Structural reliability under incomplete probability information.” J. Engrg. Mech., ASCE, 112(1), 85–103.
2.
“Engineering design in wood (limit states design).” (1984). CAN3–086.1‐M84, Canadian Standards Assoc., Rexdale, Ontario, Canada.
3.
Foschi, R. O. (1982). “Structural analysis of wood floors.” J. Struct. Engrg., ASCE, 108(7), 1557–1574.
4.
Foschi, R. O. (1985). “Reliability of wood and structural systems.” J. Struct. Engrg., ASCE, 110(12), 2995–3013.
5.
Foschi, R. O., and Yao, Z. C. (1988). “Performance factors for lumber in bending (single members, short‐term strength).” Reliability of Wood Structs. Res. Project, Rept. No. 1, Civ. Engrg. Dept., Univ. of British Columbia, Vancouver, Canada.
6.
Madsen, H. O., Krenk, S., and Lind, N. C. (1986). Methods of structural safety. Prentice‐Hall Publishing Co., 94‐98, 107–112.

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Go to Journal of Structural Engineering
Journal of Structural Engineering
Volume 115Issue 7July 1989
Pages: 1666 - 1680

History

Published online: Jul 1, 1989
Published in print: Jul 1989

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Authors

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Bryan Folz
Res. Engr., Dept. of Civ. Engrg., Univ. of British Columbia, Vancouver, B.C., Canada, V6T 1W5
Ricardo O. Foschi, Member, ASCE
Prof., Dept. of Civ. Engrg., Univ. of British Columbia, Vancouver, B.C., Canada

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