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Bolt Properties Overview

To view, edit or add bolt property definitions:

  1. Select Bolt Properties from the toolbar or the Support menu.
  2. You will see the Bolt Properties dialog. Default properties will already be defined for one bolt type. If you only need one bolt property type, then you can enter the properties and select OK.
  3. If you need more than one bolt property type, select the Add button to create additional properties. This will create new properties with the default property settings, that can be edited later.
  4. Copy current properties - this will copy of the currently selected bolt property to a selected destination property.
  5. Import from file - this allows you to import bolt properties from another SWedge or UnWedge file. Enter a filename path in the edit box, or select the dialog button to navigate to a file.
  6. To define the bolt properties, click on the tab for each bolt property and enter the desired parameters.

When you add bolts to the model (e.g. Add Pattern Bolts), you will be able to assign a bolt property type to the bolts, by selecting from a list of the bolt property types which you have created in the Bolt Properties dialog.

Overview of Bolt Support Implementation

For an overview of the way in which the bolt properties are implemented in the SWedge stability analysis, see the Bolt Support Force topic in the Theory section.

Individual Bolt Properties


Below are pre-defined bolt types in SWedge:


Bolts in SWedge may defined as either Active or Passive. See the How Bolts are Implemented in SWedge topic for information about the Active and Passive bolt models in SWedge.


Select this to consider bolt shear strength when the bolt is in the right deformation mode.


Select this to apply the Bolt Orientation Efficiency factor to the bolt tensile strength.

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