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Rock Stability 

GEO5

Geotechnical software

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Verification according to the factor of safety

When performing verification according to the factor of safety the program directly determines the value of the factor of safety FS. Verification condition has the form:

where: Tpos - shear forces along the slip surface
Tvzd - passive forces along the slip surface
Fs - required factor of safety

When analyzing the polygonal slip surface the program directly determines the value of the factor of safety FS.

Verification condition has the form:

where: FS - calculated factor of safety
SB - required factor of safety

Typical values for most cases when studying stability of rock slopes are, e.g. for walls of foundation pits F =1,1 to 1,25, for rock cuts of highways F =1,2 to 1,5, etc.




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