STAAD.Pro Help

M. To generate a mass model

To automatically generate from existing primary load cases or reference load definitions, use the following procedure.

Your model must contain one or more primary load cases or reference load definitions as load sources. The load case types must be defined as: dead, live, snow, ice, crane hook, or dust.

Any load case or reference load of load type mass will automatically be included in the generated mass model. The generated mass model contains all load items from the included load sources. These load items are factored using the specified load factors and act in the global X, Y, and Z directions.

Tip: Use the Primary Load Type tool to quickly set the load types for multiple primary load cases.
  1. On the Loading ribbon tab, select the Mass Model Generator tool in the Load Generation group.

    The Create Mass Model dialog opens.
  2. Select the load case where the mass model will be generated as either:

    New Reference Load Case

    or

    Add into 1st Dynamic Load Case

    Note: Your model must contain at least one dynamic load case in order to use the second option.
  3. Add the load cases to use in order to define the mass model. All primary load cases of the appropriate load types are automatically added to the Selected Load Cases list. Reference load cases of the appropriate load types are may be selected from the Available Reference Load Cases list as needed.
    Tip: You can remove any load cases from the Selected Load Cases list by selecting that item and then clicking the < button.
  4. Click Generate.