CIVE 401 SDSU BEGINNING REVIEW SHEET
2026 QUESTIONS WITH SOLUTIONS
GRADED A+
⩥ mechanical. Answer: in compaction, we use ________________
energy to increase the density of the soil and reduce void volume.
⩥ increase strength, reduce settlement potential, reduce hydraulic
conductivity, reduce liquefaction potential. Answer: Benefits of soil
compaction (4)
⩥ sand, sandy. Answer: One benefit of soil compaction is that it reduces
liquefaction potential, which is mainly associated with ______ and
________ soils.
⩥ static, impact, vibration, kneeding. Answer: Types of energy in soil
compaction (4)
⩥ static energy. Answer: energy in soil compaction caused by a weight
pressing down
⩥ impact energy. Answer: energy in soil compaction caused by a falling
weight
, ⩥ vibration. Answer: energy in soil compaction that COARSE-grained
soils are more susceptible to.
⩥ kneading. Answer: energy that simulates field conditions by applying
a combination of high-intensity pressure and shear forces to FINE-
grained soils.
⩥ tampers, rollers. Answer: SHALLOW methods of soil compaction (2)
⩥ dynamic, impact, vibrocompaction. Answer: DEEP methods of soil
compaction (3)
⩥ compaction type, amount of energy, soil type, water content. Answer:
Factors affecting soil compaction (4)
⩥ proctor testing. Answer: Determines optimal water content and
maximum dry density ; best for fine-grained soils and coarse-grained
soils with fines.
⩥ energy. Answer: In proctor testing, a relationship between dry unit
weight and water content is shown by a given amount of ___________.
⩥ number of lifts, hammer weight, drop height, number of drops.
Answer: In proctor testing, energy applied to soil depends on these 4
factors
2026 QUESTIONS WITH SOLUTIONS
GRADED A+
⩥ mechanical. Answer: in compaction, we use ________________
energy to increase the density of the soil and reduce void volume.
⩥ increase strength, reduce settlement potential, reduce hydraulic
conductivity, reduce liquefaction potential. Answer: Benefits of soil
compaction (4)
⩥ sand, sandy. Answer: One benefit of soil compaction is that it reduces
liquefaction potential, which is mainly associated with ______ and
________ soils.
⩥ static, impact, vibration, kneeding. Answer: Types of energy in soil
compaction (4)
⩥ static energy. Answer: energy in soil compaction caused by a weight
pressing down
⩥ impact energy. Answer: energy in soil compaction caused by a falling
weight
, ⩥ vibration. Answer: energy in soil compaction that COARSE-grained
soils are more susceptible to.
⩥ kneading. Answer: energy that simulates field conditions by applying
a combination of high-intensity pressure and shear forces to FINE-
grained soils.
⩥ tampers, rollers. Answer: SHALLOW methods of soil compaction (2)
⩥ dynamic, impact, vibrocompaction. Answer: DEEP methods of soil
compaction (3)
⩥ compaction type, amount of energy, soil type, water content. Answer:
Factors affecting soil compaction (4)
⩥ proctor testing. Answer: Determines optimal water content and
maximum dry density ; best for fine-grained soils and coarse-grained
soils with fines.
⩥ energy. Answer: In proctor testing, a relationship between dry unit
weight and water content is shown by a given amount of ___________.
⩥ number of lifts, hammer weight, drop height, number of drops.
Answer: In proctor testing, energy applied to soil depends on these 4
factors
