This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Statistical Evaluation of Load Factors in Structural Design
Annotation ability available
Sector:
Language:
English
Abstract
A procedure leading to the determination of load factors is formulated based on the following criteria: 1) The load factors should provide a desired level of structural safety with respect to all loading configuration. 2) This desired level of reliability may be determined by economic factors such as cost of construction and the cost of failure of the structural system. 3) Load factors for individual element design may be determined by the desired level of reliability of the whole system. 4) Additional information about the loading environment and the material strength characteristics can be systematically incorporated into the procedure to obtain a better set of load factors. 5) The procedure to evaluate load factors should be simple in form and easy for application. In the formulation that is presented here, dead, live, wind and earthquake loads are included. First, the load factors for a given reliability level for a structural element are calculated and second, the optimal reliability level of the structural system, its relationship with element reliability and the economic considerations in determining optimal reliability are considered. Step by step procedure is outlined and numerical example is worked out to illustrate the simplicity of the procedure.
Recommended Content
Technical Paper | Small Vehicle Structural Design |
Technical Paper | VAN FRAME STRUCTURAL EVALUATION |
Technical Paper | Post-Warranty Distribution: A New Approach to Modeling the Reliability of Products with Built-In Obsolescence |
Authors
Citation
Shah, H. and Tang, W., "Statistical Evaluation of Load Factors in Structural Design," SAE Technical Paper 700657, 1970, https://doi.org/10.4271/700657.Also In
References
- Shah H. C. “The Rational Probabilistic Code Format” Symposium on the Application of Probabilistic Concepts to Strength Design of Reinforced Concrete Members ACI Fall Conference Memphis 1968
- Allin C. Cornell “A Normative Second Moment-Reliability Theory for Structural Design” University of Waterloo Lecture Series on Structural Reliability and Codified Design Fall 1969
- Ang A. H.-S. Amin M. “Safety Factors and Probability in Structural Design” Proc. ASCE, Journal of Structural Div. 95 ST7 1389 1405 July 1969
- Ravindra M. K. Heaney A. C. Lind N. C. “Probabilistic Evaluation of Safety Factors” Report #23 University of Waterloo, Dept. of Civil Engineering October 1969 Final Report, IABSE Symposium on Concepts of Safety of Structures and Methods of Design Sept. 1969 London
- CEB recommendations for an International Code of Practice for Reinforced Concrete Cement and Concrete Association London 1964
- Niyogi P. K. “Application of Statistical Methods and Information Theory to Structural Reliability Estimates” Dept. of Civil Engineering University of Pennsylvania Philadelphia, Pennsylvania 1968
- Niyogi P. K. Shah H. C. Doshi K. D. Tang W. “Statistical Evaluation of Load Factors for Concrete Bridge Design” Second International Symposium on Concrete Bridge Design April 1969 Chicago, Illinois
- Tang W. H. “Statistical Evaluation of Load Factors in Structural Design” Stanford University, Dept. of Civil Engineering Technical Report No. 103 1969
- Recommended Lateral Force Requirements by Seismology Committee Structural Engineers Association of California 1959
- ASCE Task Committee on Wind Forces “Wind Forces on Structures” Trans. Amer. Soc. of Civil Engineers 126 II 1124 1198 1961