Rocscience International Conference 2025 is going to take place in Sydney, Australia Read more

Search Results

End Truncation Plane

To add a Truncation Plane at either end of the tunnel:

  1. Select Boundaries > End Truncation Plane End Truncation Plane.
  2. The End Truncation Plane dialog will appear.
    End Truncation Plane Dialog
    End Truncation Plane Dialog
  3. Apply Near-End Truncation and/or Far End Truncation.
  4. Specify the Plane Offset Distance(s).
  5. Select OK.

The End Truncation Plane is parallel to the tunnel opening, and at some distance offset from the tunnel end. In the 3D Wedge View, the End Truncation Plane(s) are visible in the Top, Side, and Perspective panes.

The tunnel Opening Section must be defined prior to adding End Truncation Plane(s).

Truncation Plane Definition

The End Truncation Plane in UnWedge acts as a boundary for End Wedges. Any End Wedge extending beyond the Truncation Plane will be truncated.

Similar to the perimeter Truncation Surface, bolts are allowed to penetrate through a Truncation Plane.

Effects of Truncation on Wedge Geometry

An End Wedge truncated by the Truncation Plane is no longer tetrahedral in shape. Wedge volume, weight, length, apex height, apex angle, joint area, joint trace length, and joint persistence are affected.

Effects of Truncation on Supports and Other Forces

Bolt/Joint intersections may occur either on a joint face or a truncation face on the wedge.

For any bolts passing through the truncation face of a wedge, support Failure Mode by Shear will not be considered.

The truncation face(s) of a wedge is not considered as joints. No shear strength, water pressure, or field stresses are applied to these faces.

Rocscience logo, click here to return to the homepage Portal Account Portal Account Log In Log Out Home Shopping Cart icon Click here to search our site Click here to close Learning Tech Support Documentation Info Chevron Delete Back to Top View More" Previous Next PDF File Calendar Location Language Fees Video Click here to visit Rocscience's LinkedIn page Click here to visit Rocscience's YouTube page Click here to visit Rocscience's X page Click here to visit Rocscience's Facebook page Click here to visit Rocscience's Instagram page Click here to visit Rocscience's Reddit page Bookmark Network Scroll down for more Checkmark Download Print Back to top Single User Multiple Users RSLog RocFall3 CPillar Dips EX3 RocFall RocPlane RocSlope3 RocSupport RocTopple RS2 RS3 RSData RSPile Settle3 Slide2 Slide3 SWedge UnWedge RocTunnel RocSlope2 Commercial License Education License Trial License Shop safe & secure Money-back guarantee