Page |1
ICC SOILS CERTIFICATION TEST 2025|
BRAND NEW ACTUAL EXAM WITH 100%
VERIFIED QUESTIONS AND CORRECT
SOLUTIONS| GUARANTEED VALUE PACK|
ACE YOUR GRADES.
For gravelly soils or crushed stone how thick of lifts should be placed? -
correct answer - 10 to 12 inches , compacting to about 8 inches
What kind of equipment is widely used for clay or granular soils? What
does it work best for? - correct answer - vibratory rollers, but work best with
granular material
What is the maximum size of material allowed in fills - correct answer - 12
inches, anything grater should be removed
What equipment is best used for clay materials? - correct answer -
sheepsfoot rollers
Settlement can range from? - correct answer - a few inches to 10 feet
, Page |2
What do index property include? And what can the info be used for? -
correct answer - test on undisturbed and disturbed soil samples such as
moisture content of the soil, grain size info and plasticity.
This info is useful for description, classification, and indication of various
engineering properties
What are the three primary numbers obtained from the atterburg limits
testing? - correct answer - Liquid limit
Plastic limit
Plasticity index
What is the liquid limit? - correct answer - the water content of the soil at
which it changes from plastic state to a liquid state
What is the plastic limit? - correct answer - the point at which the moisture
content of the soil is such that is transitions, through reduced water content,
from a plastic state to a nearly solid state and begins to behave like a brittle
material
What is plasticity index? - correct answer - the difference between the
plastic limit moisture content from the liquid limit moisture content
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What do expansive clays exhibit? - correct answer - higher P.I ( Plasticity
index)
What is the symbol for a high plasticity clay? - correct answer - CH
What is the symbol of a high plasticity silt? - correct answer - MH
What is the symbol of a low plasticity clay - correct answer - CL
What is the symbol of a low plasticity silt? - correct answer - ML
If a foundation is constructed on wetter soils what magnitude of swelling
occurs? - correct answer - low but a large magnitude of shrinkage can
occur
If the foundation is constructed on dry soils what magnitude of swelling
occurs? - correct answer - High but a but a fairly small magnitude of
shrinking
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A P.I that is greater than 15 is considered as what? - correct answer - a
material that has expansive potential
What is the P.I. range of a non plastic material? - correct answer - 0-3
What is the P.I. range of a slightly plastic material? - correct answer - 4-15
What is the P.I range of a medium plastic material? - correct answer - 16-
30
What is the P.I range of a highly plastic material? - correct answer - 31 or
above
If material is found on site that wasn't previously discussed prior who
should you contact? - correct answer - the project engineer immediately
Prior to placing fill how deep should the existing ground surface be scarified
to? - correct answer - typically 6 inches
ICC SOILS CERTIFICATION TEST 2025|
BRAND NEW ACTUAL EXAM WITH 100%
VERIFIED QUESTIONS AND CORRECT
SOLUTIONS| GUARANTEED VALUE PACK|
ACE YOUR GRADES.
For gravelly soils or crushed stone how thick of lifts should be placed? -
correct answer - 10 to 12 inches , compacting to about 8 inches
What kind of equipment is widely used for clay or granular soils? What
does it work best for? - correct answer - vibratory rollers, but work best with
granular material
What is the maximum size of material allowed in fills - correct answer - 12
inches, anything grater should be removed
What equipment is best used for clay materials? - correct answer -
sheepsfoot rollers
Settlement can range from? - correct answer - a few inches to 10 feet
, Page |2
What do index property include? And what can the info be used for? -
correct answer - test on undisturbed and disturbed soil samples such as
moisture content of the soil, grain size info and plasticity.
This info is useful for description, classification, and indication of various
engineering properties
What are the three primary numbers obtained from the atterburg limits
testing? - correct answer - Liquid limit
Plastic limit
Plasticity index
What is the liquid limit? - correct answer - the water content of the soil at
which it changes from plastic state to a liquid state
What is the plastic limit? - correct answer - the point at which the moisture
content of the soil is such that is transitions, through reduced water content,
from a plastic state to a nearly solid state and begins to behave like a brittle
material
What is plasticity index? - correct answer - the difference between the
plastic limit moisture content from the liquid limit moisture content
, Page |3
What do expansive clays exhibit? - correct answer - higher P.I ( Plasticity
index)
What is the symbol for a high plasticity clay? - correct answer - CH
What is the symbol of a high plasticity silt? - correct answer - MH
What is the symbol of a low plasticity clay - correct answer - CL
What is the symbol of a low plasticity silt? - correct answer - ML
If a foundation is constructed on wetter soils what magnitude of swelling
occurs? - correct answer - low but a large magnitude of shrinkage can
occur
If the foundation is constructed on dry soils what magnitude of swelling
occurs? - correct answer - High but a but a fairly small magnitude of
shrinking
, Page |4
A P.I that is greater than 15 is considered as what? - correct answer - a
material that has expansive potential
What is the P.I. range of a non plastic material? - correct answer - 0-3
What is the P.I. range of a slightly plastic material? - correct answer - 4-15
What is the P.I range of a medium plastic material? - correct answer - 16-
30
What is the P.I range of a highly plastic material? - correct answer - 31 or
above
If material is found on site that wasn't previously discussed prior who
should you contact? - correct answer - the project engineer immediately
Prior to placing fill how deep should the existing ground surface be scarified
to? - correct answer - typically 6 inches
