Cable

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Cable

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• Added by Ondrej Kalny, last edited by Mike Abell on Aug 28, 2012  (view change)
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Articles

• Cable tips
• Vertical cables
• Cable FAQ

See Also

• Cable Objects 
  – CSI Watch & Learn video

• Accounting for deformed shape in staged construction

Attribution

• [1] Photo by Regan Walsh, November 19, 2005 - Retrieved from Flikr under Creative Commons CC BY-SA 2.0 licensing

• [2] Photo by upyernoz, August 17, 2008 - Retrieved from Flikr under Creative Commons CC BY 2.0 licensing

• [3] Photo by Matthias Mueller, November 6, 2011 - Retrieved from Flikr under Creative Commons CC BY 2.0 licensing

• [4] Photo by Gary Cycles, November 7, 2010 - Retrieved from Flikr under Creative Commons CC BY 2.0 licensing

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Page: Cable tipsPage: Vertical cablesPage: Cable FAQ

Auto lateral load

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Auto lateral load

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• Added by Ondrej Kalny, last edited by Jessica Napier on Mar 27, 2014  (view change)

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Articles

• Pseudo-static lateral analysis
• Wind auto lateral load per ASCE 7-05
• Auto lateral load FAQ

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Page: Pseudo-static lateral analysisPage: Wind auto lateral load per ASCE 7-05Page: Auto lateral load FAQ

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Composite behavior

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• Added by Ondrej Kalny, last edited by Jessica Napier on Mar 29, 2014  (view change)

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This page is devoted to resources associated with the modeling of composite behavior using various CSI Software.

Articles

• Transform stiffness
• Insertion point
• Deflection during composite design
• Composite behavior FAQ

Tutorials

Creep behavior is associated with time-dependen

Creep behavior is associated with time-dependent, stress-induced changes in the strain and deformation of a structural member. Creep, along with shrinkage(decrease in direct strains over time) and aging (change in elastic modulus with age), are time-dependent material behaviors which may be applied to concrete objects using staged-construction analysis. Staged construction is a nonlinear-static application available to CSI Software with Ultimate Levels and Features. Additional information may be found in the CSI Analysis Reference Manual (Staged Construction, page 396). Staged construction is also necessary for modeling creep, shrinkage, and relaxation within tendons. Tendon elastic shortening, however, is automatically implemented with any software package.

Each of these time-dependent behaviors are specified according to CEB-FIP parameters (Comite Euro-International Du Beton, 1993). Creep formulation may follow full integration or an expedited Dirichlet series approximation (Ketchum, 1986). The CSI Analysis Reference Manual (Time-dependent Properties, page 85) presents further details.

Articles

• Creep implementation
• Creep FAQ

Damping, a property of the materia

Damping, a property of the material and the structure, influences dynamic response. A certain type of damping is available for each type of load case. Within all load cases of a certain type, damping is applied consistently, though additional damping may be added to individual load cases.

• Modal damping is used for response-spectrum and modal time-history analyses. Material modal damping, also known as composite modal damping, is weighted according to element and modal stiffness. For each material, users specify a material modal damping ratio r, in which 0 < r < 1, which relates to the damping ratio of each mode.

• Viscous proportional damping is used for direct-integration time-history analysis. This property is proportional to mass and stiffness.

• Hysteretic proportional damping, also mass- and stiffness-proportional, is used for steady-state and power-spectral-density analyses. 

• Damping devices may also be modeled as a structural subsystem, as described in the Tuned-mass damper tutorial.

Welcome to the CSI Knowledge Base

Welcome to the CSI Knowledge Base

• The CSI Knowledge Base is a searchable, online encyclopedia that provides information to the Structural Engineering community.

• The purpose of the CSI Knowledge Base is to further understanding within the field and to assist users with CSI Software application.

• Documentation may be of general technical interest or specific to CSI Software application.

• Please visit the Help Space for tips on navigating the Knowledge Base and for information on contacting CSI Technical Support.

• Website – www.csiamerica.com

• Twitter – Follow us at @csiamerica

• Facebook – Visit and Like our page

• Watch & Learn^TM videos are available on YouTube

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