Soil shear strength

Soil shear strength is the ability of soil to resist forces that try to cause it to slide or break apart. It depends on factors like the type of soil, moisture content, and how well the particles stick together. Think of it as the soil’s internal "glue" and friction holding it together. High shear strength means the soil can support structures or resist sliding, while low shear strength makes it more prone to shifting or collapsing. Engineers study this property to ensure foundations, slopes, and retaining walls are safe and stable.