STAAD.Pro Help

M. To assign axial action members

To assign a member as compression-only, tension-only, or a truss (axial-only) member, use the following procedure.

STAAD.Pro allows you to specify the axial actions of members.
  1. (Optional) Select the members which will all have the same member specification assigned.
  2. On the Specification ribbon tab, select the Beam tool in the Specification group.

    A list of member specification types opens.
  3. Select the specification type you want to assign:

    Compression Only – members are capable of carrying compression forces only

    or

    Tension Only – members are capable of carrying tensile forces only

    or

    Truss – members are capable of carrying axial forces only

    Note: These member specifications have no additional parameters.
    The Member Specification dialog opens to the corresponding tab.
  4. Either:
    To… Do the following…
    add the specification to the model and assign to the current member selection click Assign.
    add the specification to the model for later assignment click Add.
    The dialog closes.
The member specification is added to the Specifications - Whole Structure dialog and the Specification Values table.