Standards form the basis for structural analyses and various designs. In the Standards I tab, you define the most important rules according to which the model is calculated and designed.
If both the Combination Wizard and the Load Wizards are activated in the 'Add-ons' tab (see Chapter Add-ons), you can select the 'Standard group' with the 'National annex' or 'Edition'.
Standard group
In the left column, define the 'Standard group' that is relevant for the individual criteria of your model. Various rules and standards are available for selection in the list.
The 'Load Case Classification and Combination Wizard' dialog section controls the rules according to which the load combinations are created. The standards follow different approaches for determining the internal forces and moments needed to ensure the structural safety or serviceability.
The standard set in the 'Load Wizards' dialog section affects the automatic generation of wind and snow loads for standard building types.
The 'Design | Standard Group' controls the standards that are used for the design of different materials or for special analyses. Any category can be accessed only if the corresponding add-on is activated in the Add-ons tab.
National annex | Edition
For standards such as the Eurocode, there are special rules for individual countries: The combination and design rules are defined in the European standard, but the countries are allowed to regulate many partial safety factors and design parameters individually. In the second column, select the National Annex or edition for the respective standard groups.
By setting the 'CEN' option, the factors and parameters recommended by the European Commission apply.
Use the
button to show or hide old versions of the standard in the list.
To check the partial safety and combination factors of the selected standard, click the
button next to the text box. A dialog box appears, showing content that depends on the selected standard group.
Adjusting Parameters for Combination Wizards
The partial safety and combination factors of a National Annex or a standard edition cannot be changed. To combine the load cases by user-defined factors, select an annex or edition with parameters serving as a reference. Then, use the
button to open the 'Load Case Classification and Combination Wizard'.
Click the
button to open a new dialog box. Enter a 'Name suffix' for the modified Annex.
After clicking OK, you can adjust the factors individually. Complete the changes in the 'Load Case Classification and Combination Wizard' dialog box by clicking OK. The user-defined annex is then available for selection in the list.
Activated Standards
This dialog section provides an overview of the rules used for the model.