The RocPortal is now available. Learn more.

Search Results

Shear Factor of Safety

This is the only failure mode considered in a Rigid analysis. The crown pillar or roof beam is treated as a rigid block (elastic properties are not considered), and the factor of safety of the pillar against vertical downward sliding is given by the ratio of the sum of the shear forces acting on the sides (i.e., abutments) of the pillar, to the total weight of the pillar, including overburden and free water, if any.

For a Rectangular Pillar, the Shear Factor of Safety is given by:

Shear Factor of Safety = Shear FS Equation


Parameter Symbols Definition

The shear strengths Shear Strength Symbol for XZ and Shear Strength Symbol for YZare determined based on the Strength Criterion and Lateral Stress parameters input by the user.

For a Polygonal Pillar, the Shear Factor of Safety is calculated by summing the shear resistances along each abutment face and dividing by the total deadload.

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" 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 Twitter page Click here to visit Rocscience's Facebook page Click here to visit Rocscience's Instagram page Bookmark Network Scroll down for more Checkmark Download Print Back to top Single User Multiple Users RSLog RocFall3 CPillar Dips EX3 RocFall RocPlane RocSupport RocSupport RocTopple RS2 RS3 RSData RSPile Settle3 Slide2 Slide3 SWedge UnWedge Commercial License Education License Trial License Shop safe & secure Money-back guarantee