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Frequently asked questions which concern the composite behavior of systems modeled and analyzed using CSI Software are summarized in this article. Answers to those questions are also provided. Topics include partially-composite and non-composite behavior, design-force application, and display settings. Also covered are composite-section boundary conditions, connection details, and their effect on composite response. |
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Modeling
How do I model an object with different tensile and compressive stiffness relationships?
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CSI Analysis Reference Manual (Chapters 14 and 15)
- – SAP2000 - 18 Gap Elements - CSI Watch & Learn video
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How are partially composite sections modeled?
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- Obtain design forces by replacing rectangular beams with T-Beam sections, then use property modifiers to modify adjacent shell objects such that they do not contribute the same stiffness and weight as the T-beams (not applicable to SAFE program as weight of slab/T-beam flange overlap is not double counted in SAFE). Frame forces in the T-beams would then directly correspond with composite-section design forces.
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Answer: The design procedure may be changed by selecting the appropriate members, then switching from Composite Beam Design to Steel Frame Design through Design > Overwrite Beam Design.
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