SOIL DENSITY CERTIFICATION EXAM
QUESTIONS AND ANSWERS 2026
VERIFIED.
Class H Felony - ANS Any person who knowingly falsifies any inspection report or test report
required by the Department Of Transportation in connection with the construction of highways
shall be guilty of a _______.
Falsification of Records - ANS ___________ is defined as the changing or misrepresentation
of data or tests. Falsification also includes the destruction or altercation of records
5 - ANS Certifications are valid for _____ years.
Solid particles, water, air - ANS Components of soil
weight per unit volume - ANS Definition of Density
Pounds per Cubic Foot - ANS Density formula
Wet density, Dry density - ANS Soil has two density values
Wet density - ANS density with water included
@COPYRIGHT ALL RIGHTS RESERVED PAGE 1 OF 6
, Dry density - ANS density with water excluded
Strength, Permeability, Compressibility - ANS Engineering properties affected by dry density
of soil include...
Increases strength, Decreases Permeability, Decreases compressibility - ANS Increasing dry
density
Compaction - ANS Process by which a soil is subjected to compressive forces for the purpose
of decreasing the volume of air voids, thereby increasing the dry density
Static weight, Kneading, Impact, Vibration - ANS Types of Compaction Effort
Water acts as lubrication - ANS Importance of water
Optimum Moisture - ANS Moisture content at which a soil can be compacted to its Maximum
Dry Density with a given compactive effort
Soil - ANS AASHTO T99 is used on
ABC - ANS AASHTO T180 is used on
Indicate - ANS Field density test _____ if a given area has been compacted to a minimum
acceptable percentage of the Maximum Dry Density
Subgrade - ANS Usually the top 8 inches of soil
10 inches - ANS Placement of embankment lifts do not exceed
@COPYRIGHT ALL RIGHTS RESERVED PAGE 2 OF 6
QUESTIONS AND ANSWERS 2026
VERIFIED.
Class H Felony - ANS Any person who knowingly falsifies any inspection report or test report
required by the Department Of Transportation in connection with the construction of highways
shall be guilty of a _______.
Falsification of Records - ANS ___________ is defined as the changing or misrepresentation
of data or tests. Falsification also includes the destruction or altercation of records
5 - ANS Certifications are valid for _____ years.
Solid particles, water, air - ANS Components of soil
weight per unit volume - ANS Definition of Density
Pounds per Cubic Foot - ANS Density formula
Wet density, Dry density - ANS Soil has two density values
Wet density - ANS density with water included
@COPYRIGHT ALL RIGHTS RESERVED PAGE 1 OF 6
, Dry density - ANS density with water excluded
Strength, Permeability, Compressibility - ANS Engineering properties affected by dry density
of soil include...
Increases strength, Decreases Permeability, Decreases compressibility - ANS Increasing dry
density
Compaction - ANS Process by which a soil is subjected to compressive forces for the purpose
of decreasing the volume of air voids, thereby increasing the dry density
Static weight, Kneading, Impact, Vibration - ANS Types of Compaction Effort
Water acts as lubrication - ANS Importance of water
Optimum Moisture - ANS Moisture content at which a soil can be compacted to its Maximum
Dry Density with a given compactive effort
Soil - ANS AASHTO T99 is used on
ABC - ANS AASHTO T180 is used on
Indicate - ANS Field density test _____ if a given area has been compacted to a minimum
acceptable percentage of the Maximum Dry Density
Subgrade - ANS Usually the top 8 inches of soil
10 inches - ANS Placement of embankment lifts do not exceed
@COPYRIGHT ALL RIGHTS RESERVED PAGE 2 OF 6
