Local cross-section weakenings, such as bolt holes, can also be considered in the design. You can enter the required design parameters by assigning a member local section reduction.
Reduction Type and Location
You can define the design parameters for different locations along a member or member set. For this, a specific location is defined by using an absolute or relative entry. Use the
button to switch between the relative and absolute length entry. A multiple definition for the faster entry of recurring design parameters in a certain distance is also possible.
For a better overview, you can use the
button to sort all defined design parameters in the table in ascending order.
Parameters | Design Parameters
In this section, the design parameters for the selected location are defined. If you select the multiple definition, enter a number and an offset of the cross-section reductions. Again, the distance can be entered absolutely or relatively.
The local cross-section weakening is defined by entering the area of reduction. After assigning the member local section reduction to an object, a net sectional area is automatically calculated from the gross sectional area of the cross-section at the corresponding location, minus the area of reduction, and displayed in the dialog box.
If no clear net sectional area can be calculated due to the assignment to several objects or several locations, the minimum and maximum values of the net sectional areas are displayed in this dialog box. The design uses the corresponding value for the location.
If it is regulated in the selected design standard, you can also define a shear strain factor (for example, in the case of a single-leg connection of angle sections according to AISC).
For some design standards, it is also possible to specify the compression design; this is explicitly noted in the title of the option.
If a member local section reduction was taken into account in the design, the corresponding intermediate values are displayed under Design Check Details.
Graphical Display
In the Navigator - Display, you can activate the graphical display of the Member Local Section Reduction. For members and member sets to which a member local section reduction is assigned, a cross-section border is displayed at the locations of the reduction.