Geotechnical ch.1

Which of the following are good indicators that a soil is more clayey than silty?

• Light in color and porous

• Low dry strength and feels soft when wet

• HIGH dry strength and no dilatancy reaction

• None of the above

Which two examples best describe an artificial fill type of soil?

• Naturally deposited material, such as alluvial or slide debris

• SOIL with construction debris (glass, brick, etc.)

• DOCUMENTED engineered fill

• Porous topsoil

A soil classified by the USCS symbol of CH would have which two characteristics?

• Finer than the #200 sieve

• High porosity

• HIGH dilatancy

• HIGH plasticity

Porosity of a soil may indicate that the soil is:

• A natural formation

• well graded

• engineered filled

Sand particles will not pass what size sieve?

• #200 (0.075 MM)

• #4 (4.75 mm)

• #100 (1.50 mm)

A soil composed of 65% sand, 30% silt, and 5% clay could best be described as:

• SM
• sc

• ml

A soil composed of 40% sand, 30% clay, and 30% silt could best be described as:

• sm/cl

• SC/SM

• cl/ml