DETAILED QUESTION SERIES
◉ As e _____ strength increases
Answer: decreases
◉ As e ________ permeability
Answer: decreases
◉ Cohesionless Soil (gravel, sand)
Answer: Free running type of soil whose strength depends on
friction between particles
◉ Cohesive soil (silt, clay)
Answer: Strength depends on surface tension for capillary water
◉ Soil Classification
Answer: Is the arrangement of different soils with similar properties
into groups reflects soil's physical and mechanical properties
◉ Soil is classified according to characteristic properties such as :
, Answer: - Cohesion: non-cohesive soils (gravel, sand) & cohesive
soils (silt, clay)
- Grain size: coarse-grained soils (sand, gravel) & fine-grained soils
(silt, clay)
◉ Particle-Size Analysis Tests :
Answer: 1. Sieve analysis test
2. Hydrometer test
◉ Sieve No. 4
Answer: 4.75 mm
◉ Sieve No. 200
Answer: 0.075 mm
◉ Coefficient of Uniformity (Cu) =
Answer: D60/D10
◉ Coefficient of Curvature (Cc) =
Answer: D30^2 / ( D60 * D10 )
◉ Well graded sand :