How to Create Derating Factors/Strength States for Conductors
1. Click on the environments tab and click on "Add Derating Factor" at the bottom (ConductorA and ConductorB have been created)

2. Each derating factor can either be 'variable' (added to strength states table allowing you to specify a value for each strength state) or 'constant' (provide a number directly). In this example we have set them to be variable.

3. Since ConductorA and ConductorB are Variable derating factors, they have automatically been generated in the Strength State table. Specify the derating factor for each across your strength states. 

4. Specify tags for the derating factors to apply to your conductors. Tags 'conda' and 'condb' have been created.

Note: The default Conductors derating factors in the Strength states table have been changed to 1 so that they do not compound.

Note, serviceability is our sustained condition and strength is our extreme conditions. If you look into the environments table, you will see that these have been attached to our sustained (e.g. every day) and strength (e.g. max wind) environments.

5. In the conductor library, tag each conductor as appropriate, to ensure it is being analyzed with the correct strength states:

6. To view the analysis, click on a span and view the 'General' tab. We can view the derating factor for that span. This is found within the "tension in environments" section, by clicking on the "Env Max" value which will show you where the derating factor is coming from:

By adding multiple tags to a single conductor the derating factor can be compounded to a very small number:


The process for adding to poles is similar, follow steps 1 to 5 above to create and add the derating factors to your desired poles through either the library or a CSV import.

The next steps are as follows:

1. After the derating factor has been applied to the pole, we can then click on the pole itself and view the 'Structure' tab in the properties pane to see its impact on pole strength:

Note that by clicking on 'derated=' you can see the exact derating factor being applied. In this case, ConductorB is the same conductor B as created above and as such we are applying a factor of 18%

2. You can again choose to add multiple derating factors to a pole.


To add custom derating factors to crossarms, the derating factor must be added via the components library:

1. Open up the components library and choose the correct crossarm for your construction

2. Within the 'tags' box, choose the desired derating factor (as created for conductors):

3. You can then create a construction with this crossarm and the derating factor will be applied. 


In the same way as crossarms, insulators can have custom derating factors applied via the components library.  To add this factor, open up the library and choose the desired insulator to be derated: