STAAD.Pro HelpModelingM. Loading Your ModelM. Time History Loads M. Time History Loads This section describes how to add time history loads to your STAAD.Pro model. M. To define a time history type from tabular dataTo use a set of time value pairs to define a time history load, use the following procedure. M. To define a time history type from a functionTo use a parametric function to define a time history load, use the following procedure. M. To define a time history type by spectrumTo define a time history type using spectral parameters, use the following procedure. M. To define a time history type by external fileTo define a time history type using data in an external text file, use the following procedure. M. To define time history parametersTo define arrival times and damping used for time history loads, use the following procedure. M. To add a time history loadTo add a time history load to the current primary load case, use the following procedure. Parent Topic: M. Loading Your ModelRelated ConceptsEX. US-16 Time History Analysis for Forcing Function and Ground MotionEX. US-22 Time History Analysis for Sinusoidal LoadingEX. US-29 Time History Analysis of a Frame for Seismic LoadsEX. UK-16 Time History Analysis for Forcing Function and Ground MotionEX. UK-22 Time History Analysis for Sinusoidal LoadingEX. UK-29 Time History Analysis of a Frame for Seismic Loads