Implementing Probability-Based Structural Codes


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Title: Implementing Probability-Based Structural Codes

Author(s): C. Allin Cornell

Publication: Special Publication

Volume: 31


Appears on pages(s): 111-146

Keywords: beams (supports); bending moments; building codes; coefficient of variation; columns (supports); cracking (fracturing); deflection; loads (forces); probability theory; rectangular beams; reinforced concrete; shear properties; statistical analysis

Date: 1/1/1972

This paper presents a number of illustrations of the development of equations and numerical values of coefficients of variations for use in probability-based structural codes. . .Several different functional forms of equations are illustrated, and several different sources of uncertainty are included (material properties, member dimensions, and equation inaccuracies). The results provide characteristic values of these resistances. General conclusions are drawn as to the kinds of information which committees should report and as to what factors must be considered in the evaluation of coefficients of variation as mesaures of uncertainty. . .A two-phrase implementation of probability-based codes is recommended.