Soil Reinforcement

Visually, what type of soil does the image show?

• Sand

• Clay

• Silt

• Gravel

Visually, what type of soil does the image show?

• Clay

• Silt

• Gravel

• Sand

What characteristics does sandy soil usually have?

• Low permeability and high cohesion

• High permeability and low cohesion

• High plasticity and low permeability

• High consolidation and low permeability

What is slope stability?

• The ability of a slope to resist movement and failure

• The process of soil compaction

• The movement of groundwater in soil

• The tendency of soil to expand and shrink

Which of the following can increase the risk of slope failure?

• Increased vegetation

• Removing water from the soil

• Steepening the slope

• Installing retaining walls

What role does water play in slope stability?

• Increases shear strength

• Reduces pore pressure

• Increases pore pressure and reduces shear strength

• Makes soil more cohesive

What happens when the factor of safety (FS) of a slope is less than 1?

• The slope is stable

• The slope is at risk of failure

• The slope is perfectly safe

• The slope is unaffected

Which method is commonly used to analyze slope stability?

• Terzaghi’s bearing capacity equation

• Fellenius's method

• Darcy’s law

• Bernoulli’s equation

What is the role of cohesion in soil shear strength?

• Increases permeability

• Increases stability

• Reduces soil strength

• Reduces compaction