A. To specify a nonlinear cable analysis

To specify a nonlinear cable analysis using the advanced features in STAAD.Pro, use the following steps.

You must specify at least one member with a nonlinear cable specification.

Note: Use of the Advanced Cable analysis feature requires the STAAD.Pro Advanced License.

Only one primary load case is permitted for a nonlinear cable analysis. A CHANGE command must be used with a new nonlinear cable analysis for each additional primary load case to be analyzed.

Either:

select the Analysis page

or
on the Analysis and Design ribbon tab, select the Analysis Commands tool in the Analysis Data group

The Analysis/Print Commands dialog opens.
Select the Perform Cable Analysis tab.
Select the Advanced Cable Analysis option.
(Optional) Set the options for Use Modified Newton-Raphson method and Use Geometric Matrix (Kg) as needed.
(Optional) Type values for the Steps, Eq-Iterations, and Eq-tolerance fields as needed. Default values are assumed for each when not specified.
Select the Print Option you want to use.
Click Add. The advanced cable analysis command is added to the input file.

Add a change command and a new primary load case to analyze additional load cases using a nonlinear cable analysis. Then repeat this procedure to specify another nonlinear cable analysis.

Tip: You can select to add the cable sag values for a nonlinear cable analysis to the output file in the post-analysis Analysis/Print Commands dialog.