Arkansas AR-CL Concrete
Leveling Contractor Practice
Exam | Questions, Verified
Answers & Detailed
Rationales | Complete
Contractor License Exam Prep
Study Guide | Updated 2026
1. What is the primary purpose of concrete leveling?
A. To raise and stabilize sunken concrete to an
appropriate elevation
B. To make concrete completely waterproof
C. To increase the concrete's compressive strength
D. To remove all existing joints
Answer: To raise and stabilize sunken concrete to an
appropriate elevation
Rationale: Concrete leveling is primarily performed to
correct settlement, restore usable elevations, improve
drainage, and reduce trip hazards.
2. Which condition most commonly causes a concrete
sidewalk or slab to settle?
A. Excessive concrete curing
B. Loss, compression, or movement of supporting soil
C. Excessive surface finishing
D. Too much reinforcing steel
Answer: Loss, compression, or movement of supporting
soil
,Rationale: Settlement generally occurs because the
supporting soil or fill loses bearing capacity,
consolidates, erodes, or moves.
3. What is pressure grouting?
A. Grinding the surface of concrete under pressure
B. Painting concrete with a pressurized coating
C. Injecting a cementitious or other suitable grout
beneath or into a structure to fill voids or provide
support
D. Cutting concrete with a pressure saw
Answer: Injecting a cementitious or other suitable grout
beneath or into a structure to fill voids or provide
support
Rationale: Pressure grouting uses controlled injection to
fill voids, improve support, and in appropriate
applications lift or stabilize slabs.
4. Which material is commonly used in modern concrete
slab lifting?
A. Asphalt emulsion only
B. Sand only
C. Polyurethane foam
D. Dry cement only
Answer: Polyurethane foam
Rationale: Two-component polyurethane systems are
widely used for slab lifting because they can be injected
through small holes and expand beneath the slab.
5. What is a major advantage of polyurethane slab
lifting?
,A. It always requires removal of the slab
B. Small injection holes can often be used
C. It eliminates the need to inspect the soil
D. It makes every slab structurally sound
Answer: Small injection holes can often be used
Rationale: Polyurethane systems can frequently be
installed through relatively small drilled holes, reducing
surface disturbance compared with some traditional
methods.
6. What should a contractor determine before
attempting to lift a settled slab?
A. The customer's preferred paint color
B. The cause and extent of settlement and the condition
of the slab
C. The age of the contractor's truck
D. The weather forecast only
Answer: The cause and extent of settlement and the
condition of the slab
Rationale: A proper evaluation determines whether
leveling is appropriate and helps identify drainage,
erosion, soil, utility, or structural problems.
7. Which condition may make lifting a cracked slab
inappropriate without additional repair?
A. A clean control joint
B. Severe structural deterioration or fragmentation
C. A smooth surface
D. Normal surface discoloration
Answer: Severe structural deterioration or
fragmentation
, Rationale: Severely damaged concrete may not have
sufficient integrity to tolerate lifting forces and may
require replacement or structural repair.
8. What is the primary purpose of drilling injection
holes?
A. To weaken the slab
B. To locate reinforcing steel automatically
C. To provide access for injection material beneath or
into the slab
D. To increase surface texture
Answer: To provide access for injection material beneath
or into the slab
Rationale: Injection holes provide controlled access
points for delivering lifting or void-filling material.
9. Why should injection holes generally be positioned
strategically?
A. To maximize the number of holes regardless of need
B. To distribute lifting forces and control the movement
of the slab
C. To make drilling more difficult
D. To avoid measuring elevations
Answer: To distribute lifting forces and control the
movement of the slab
Rationale: Hole location affects material distribution,
lifting response, and the contractor's ability to control
elevation.
10. What is a void beneath concrete?
A. A surface stain
B. A concrete joint
Leveling Contractor Practice
Exam | Questions, Verified
Answers & Detailed
Rationales | Complete
Contractor License Exam Prep
Study Guide | Updated 2026
1. What is the primary purpose of concrete leveling?
A. To raise and stabilize sunken concrete to an
appropriate elevation
B. To make concrete completely waterproof
C. To increase the concrete's compressive strength
D. To remove all existing joints
Answer: To raise and stabilize sunken concrete to an
appropriate elevation
Rationale: Concrete leveling is primarily performed to
correct settlement, restore usable elevations, improve
drainage, and reduce trip hazards.
2. Which condition most commonly causes a concrete
sidewalk or slab to settle?
A. Excessive concrete curing
B. Loss, compression, or movement of supporting soil
C. Excessive surface finishing
D. Too much reinforcing steel
Answer: Loss, compression, or movement of supporting
soil
,Rationale: Settlement generally occurs because the
supporting soil or fill loses bearing capacity,
consolidates, erodes, or moves.
3. What is pressure grouting?
A. Grinding the surface of concrete under pressure
B. Painting concrete with a pressurized coating
C. Injecting a cementitious or other suitable grout
beneath or into a structure to fill voids or provide
support
D. Cutting concrete with a pressure saw
Answer: Injecting a cementitious or other suitable grout
beneath or into a structure to fill voids or provide
support
Rationale: Pressure grouting uses controlled injection to
fill voids, improve support, and in appropriate
applications lift or stabilize slabs.
4. Which material is commonly used in modern concrete
slab lifting?
A. Asphalt emulsion only
B. Sand only
C. Polyurethane foam
D. Dry cement only
Answer: Polyurethane foam
Rationale: Two-component polyurethane systems are
widely used for slab lifting because they can be injected
through small holes and expand beneath the slab.
5. What is a major advantage of polyurethane slab
lifting?
,A. It always requires removal of the slab
B. Small injection holes can often be used
C. It eliminates the need to inspect the soil
D. It makes every slab structurally sound
Answer: Small injection holes can often be used
Rationale: Polyurethane systems can frequently be
installed through relatively small drilled holes, reducing
surface disturbance compared with some traditional
methods.
6. What should a contractor determine before
attempting to lift a settled slab?
A. The customer's preferred paint color
B. The cause and extent of settlement and the condition
of the slab
C. The age of the contractor's truck
D. The weather forecast only
Answer: The cause and extent of settlement and the
condition of the slab
Rationale: A proper evaluation determines whether
leveling is appropriate and helps identify drainage,
erosion, soil, utility, or structural problems.
7. Which condition may make lifting a cracked slab
inappropriate without additional repair?
A. A clean control joint
B. Severe structural deterioration or fragmentation
C. A smooth surface
D. Normal surface discoloration
Answer: Severe structural deterioration or
fragmentation
, Rationale: Severely damaged concrete may not have
sufficient integrity to tolerate lifting forces and may
require replacement or structural repair.
8. What is the primary purpose of drilling injection
holes?
A. To weaken the slab
B. To locate reinforcing steel automatically
C. To provide access for injection material beneath or
into the slab
D. To increase surface texture
Answer: To provide access for injection material beneath
or into the slab
Rationale: Injection holes provide controlled access
points for delivering lifting or void-filling material.
9. Why should injection holes generally be positioned
strategically?
A. To maximize the number of holes regardless of need
B. To distribute lifting forces and control the movement
of the slab
C. To make drilling more difficult
D. To avoid measuring elevations
Answer: To distribute lifting forces and control the
movement of the slab
Rationale: Hole location affects material distribution,
lifting response, and the contractor's ability to control
elevation.
10. What is a void beneath concrete?
A. A surface stain
B. A concrete joint
