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To include time dependent properties (such as [kb:Creep], [kb:Shrinkage], or change of Young's Modulus E) in the analysis, it is necessary to setup the model as described below.

h1. Define a Staged Construction Load Case

* [kb:Staged construction] load case must be set up by using "Define > Load Cases > Add New Load Case" menu command. Select load case type "Static" and analysis type "Nonlinear Staged Construction".
* Be sure to specify nonzero durations in stage definition.
* Check the "Time Dependent Material Properties" option on the "Nonlinear Parameters" form.

!Staged_construction_time_dependent_analysis.png!

h1. Specify Time Dependent Properties

On the "Time Dependent Material Properties for Concrete", you would also need to specify for which material properties the time dependence should be considered:

!Define_time_dependent_properties_for_concrete.png!

h1. See Also

* {new-tab-link:http://www.csiberkeley.com/}CSI{new-tab-link} [_Analysis Reference Manual_|doc:CSI Analysis Reference Manual] (Nonlinear Static Analysis > Staged Construction, page 396) for additional information regarding staged construction analysis