Limit State Design

Limit state design (LSD) refers to a design method used in structural engineering. A limit state is a condition of a structure beyond which it no longer fulfills the relevant design criteria. The condition may refer to a degree of loading or other actions on the structure, while the criteria refer to structural integrity, fitness for use, durability or other design requirements. A structure designed by LSD is proportioned to sustain all actions likely to occur during its design life, and to remain fit for use, with an appropriate level of reliability for each limit state. Building codes based on LSD implicitly define the appropriate levels of reliability by their prescriptions.

Read more about Limit State Design:  Criteria, Ultimate Limit State, Serviceability Limit State, Factor Development, Example Treatment of LSD in Codes, The State of The Art, Limit State Design in The United States, Limit State Design in Europe

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