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Add Lining

The Add Lining option allows you to apply liners to the faces of External geometry. In RS3, the term liner refers to a collection of lining layers that can define a composite material with joint interfaces.

Liner (purple segments) applied to edges as sheet pile walls for an excavation

Linear (purple segments) applied to edges as sheet pile walls for an excavation

To add a liner:

  1. Select the Support Support workflow tab workflow tab.
  2. Select Faces Selection Faces Selection icon as the Selection Mode to add geometry faces to add the liner.
  3. Select Add LiningAdd Lining icon from the toolbar or Select: Support > Liners > Add Lining.
  4. You will see the Add Lining dialog. Select the Liner Property that you would like to add. You can edit liner layer properties by selecting the edit Edit Liner icon option to the right of the Liner Property dropdown menu. Review Define Liner Properties for more details.
  5. Check the Flip Orientation checkbox to change the order of liner layers. See below for more details.
  6. Stage the liner installation using the Install at stage and Remove at stage options
  7. See below for details about using the Auto-remove in excavated material option
  8. When you are finished selecting, press OK.
  9. Liners are represented by thick coloured surfaces displayed on the applied faces of the geometry. The colours correspond to each Liner Layer Property type that is defined in the Liner Property type selected from the Add Lining dialog (Step 4).

If liners are not initially installed at the desired stage, or with the desired property type, the staging and property type can be changed at any later time using the edit options. See the Edit or Delete Liners topic for more information.

Liner Property

You can select a Liner Property type for the liner. If you wish to edit the liner properties you can use the Edit Liner Edit Liner icon shortcut button beside the liner property type list.


If your model is staged, you can specify the installation (and removal) stage of a liner.

  • Install at stage - by default the installation stage will be set to the stage that you are currently viewing (i.e. the currently selected stage tab). You can enter a different stage if necessary.
  • Remove at stage - (optional) you can also specify a removal stage, by selecting the Remove at stage checkbox and entering the stage at which the liner is to be removed (uninstalled).

Auto-remove in excavated volume

If a liner is applied to a boundary, and then the material on BOTH sides of the boundary is excavated at a later stage, the liner can be automatically removed by selecting the Auto-remove in excavated volume checkbox. If this checkbox is NOT selected, then liners which span an excavated volume will remain in place (which could be used to model struts or trusses for example).

Flip Orientation

The order of liner layers is defined by the liner orientation. The order of liner layers is important for defining the side of the selected face(s) that a liner layer should appear. For example, you may apply shotcrete to an excavation wall first before adding a synthetic liner. In this case, you want your shotcrete to be closest to the soil and the synthetic liner to be on top of the shotcrete and closest to the excavated side.

Reverse Liner Orientation

Under certain circumstances, after a liner has been added to a model, it may be desirable or necessary to reverse the liner sign convention for bending calculations. For this purpose you can use the Reverse Liner Orientation option, see that topic for details.

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