Load Factors for Limit States Codes
Publication: Journal of Structural Engineering
Volume 113, Issue 9
Abstract
A procedure is presented which is suitable for determining statistically based load factors for use in loading codes, without consideration of the statistics of the material of construction. This procedure involves investigating the probability of exceeding the factored design loads during the service life of the structure. The probability of exceeding the design load is defined in terms of a load index. In the development of limit states material codes the material factors can subsequently be determined using a full reliability analysis. The load index implied in the American loading code ANSI A58.1–1982 and i the American concrete code ACI 318–1983 are investigated.
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References
1.
American Concrete Inst. (1983). “Building code requirements for reinforced concrete, ACI 318‐83.” Detroit, Mich.
2.
American Nat. Standards Inst. (1982). “Building code requirements for minimum desien loads in buildings and other structures, ANSI A58.1‐1982.” New York, N.Y.
3.
Ellingwood, B., Galambos, T. V., MacGregor, J. G., and Cornell, C. A. (1980). “Development of a probability based load criterion for American National Standard ASS.” NBS Special Publ. SP577, Nat. Bureau of Standards, Washington, D.C.
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Leicester, R. H. (1985). “Computation of a safety index.” Civ. Engrg. Trans., CE27(1), 55–61.
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Milford, R. V. (1985). “Development of load factors for inclusion in SABS 0160 (The general procedures and loadings to be adopted for the design of buildings).” Internal Rpt. 85/11, Struct, and Geotech. Engrg. Div., Nat. Building Res. Inst., CSIR, Pretoria, S. Africa.
6.
Milford, R. V. (1986). “The development of load factors for SABS 0160.” Seminar on Future Devel. in Limit State Design with Particular Reference to Concrete, Steel and Timber, Portland Cement Institute, Portland Park, S. Africa.
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Pham, L. (1985). “Load combinations and probabilistic load models for limit state codes.” Civ. Engrg. Trans., CE27(1), 62–67.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 113 • Issue 9 • September 1987
Pages: 2053 - 2057
Copyright
Copyright © 1987 ASCE.
History
Published online: Sep 1, 1987
Published in print: Sep 1987
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