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Slide 3: What is Crack?

Removing Unrealistic Strength: Soil has very little to no tensile strength. Including a tension crack zone removes these "tensile stresses" from the stability calculations, which usually results in a more conservative and realistic factor of safety.

, the gold standard for 3D limit equilibrium analysis. For weeks, he’d been trying to predict the failure of the "Devil’s Elbow," a notorious stretch of highway prone to landslides. But the software kept giving him a Factor of Safety that didn't match the reality of the cracking pavement.