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What is Understanding Stiffness Modifiers in ETABS about?
Stiffness modifiers in ETABS are used to increase or decrease properties like area, inertia, and torsional constant of cross-sections, primarily to model cracked concrete behavior. For linear analysis of structures, reasonable assumptions about member stiffness are needed as cracking reduces concrete stiffness and redistributes moments. The ACI code provides guidelines for selecting stiffness modifiers depending on the type of analysis, including using half gross stiffness for beams and full stiffness for c
- Author
- sashibooshan
- Language
- EN