1.6. Shear Strength in Soils

Try these first

1. 1.

   What does shear strength in soils refer to?

   Hint

   Focus on the definition of shear strength.

2. 2.

   Name one component that contributes to shear strength.

   Hint

   Think about the two factors mentioned in the lesson.

3. 3.

   What is shear strength?

   • The weight of the soil
   • The capacity to resist sliding
   • The color of the soil

   Hint

   Think about the definition provided.

4. 4.

   True or False: Shear strength only depends on cohesion.

   • True
   • False

   Hint

   Reflect on the various components of shear strength.

5. 5.

   Analyze a slope failure case where a rainy season caused a landslide. Identify how cohesion and shear stress contributed to the event.

   Hint

   Consider both the water content and the loading conditions.

6. 6.

   Design a small retaining wall to hold back soil, knowing the soil has a cohesion of 15 kPa and an angle of internal friction of 25 degrees. Calculate the maximum height of soil it can hold.

   Hint

   Calculate the lateral earth pressures and apply suitable safety factors.