Stability Tab (for Geogrid Reinforced Walls)

Stability Tab (for Geogrid Reinforced Walls)

 

 

 

Stability Tab

 

Displays overturning and sliding factors of safety.

 

There are two sliding safety factors indicated in the Segmental Retaining Wall module.  They are as follows:

 

Sliding Safety Factor:  An evaluation of sliding at the bottom of the wall.  It uses weight times the tangent of the in-situ soil friction angle to determine the resisting capacity.  Then it divides that capacity by the total driving force to arrive at a factor of safety.

 

Sliding at Lowest Layer Safety Factor:  An evaluation of the tendency of the wall to shear at the top of the lowest block.  It uses weight times the tangent of the in-situ soil friction angle to determine the component of resistance due to soil friction.  To that it adds the pin shear strength and the block friction capacity to come up with a total resisting capacity.  It then divides that value by the driving force above that shear plane to arrive at a factor of safety.

 

Reports total vertical load, eccentricity of vertical force, effective base width, soil bearing pressure, allowable soil bearing pressure, and soil bearing safety factor.