Safety Requirements in Structural Design and ACI 318-71


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Title: Safety Requirements in Structural Design and ACI 318-71

Author(s): Raymond C. Reese

Publication: Journal Proceedings

Volume: 70

Issue: 3

Appears on pages(s): 190-198

Keywords: bearing capacity: building codes:loads (forces): probability theory:safety factor; strength; stresses;torsion.

Date: 3/1/1973

The need for appropriate safety factors is illustrated. Causes of uncertainty in loads and strengths are listed. Probable variations in dead, live and other loads are discussed. The load factors and factors of ACI 3 18-71 are scheduled, ex-plained, and justified. The need for careful, conscientious work by designer and builder and not reliance on overly conservative safety factors is stressed. Probabilistic approaches to safety are mentioned. An appendix summarizes briefly the CEB/FIP concepts of partially probabilistic approaches to safety.