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

Search Results

Strength Factor

The Strength Factor option will plot contours of strength factor around the excavation(s).

The strength factor is calculated by dividing the rock strength (based on your failure criteria) by the induced stress at every point in the mesh. All three principal stresses have an influence on the strength factor (Sigma 1, Sigma 3 and Sigma 3), so the strength factor in RS3 can be considered 3-dimensional.

In the case of Elastic materials, the strength factor can be less than unity, since overstressing is allowed. In the case of Plastic materials, the strength factor is always greater than or equal to unity.

The following document gives the equations used to calculate Strength Factor in RS3, and also the calculation of the Number of Load steps: Strength Factor Equations .


When Tension is indicated in the strength factor contours, this means that Sigma 3 is less than the calculated negative stress (Tension) cutoff for the failure criterion in use.

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