AZ L-90 Artificial Turf Installation
Contractor Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationales 2027 Q&A | Instant
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1. What is the primary purpose of properly compacting the subgrade
beneath an artificial turf installation?
A. Increase turf color
B. Prevent settlement and provide a stable foundation
C. Reduce the amount of infill required
D. Make the turf fibers softer
Answer: B. Prevent settlement and provide a stable foundation
Rationale: Proper subgrade preparation and compaction help prevent
differential settlement, rutting, and surface irregularities that can damage
the finished installation.
, 2. Which condition should be corrected before installing the aggregate
base?
A. Turf fiber direction
B. Infill color
C. Soft or unstable areas in the subgrade
D. Seam adhesive color
Answer: C. Soft or unstable areas in the subgrade
Rationale: Unstable areas can settle after installation and create
depressions or uneven surfaces. They should be repaired before the base is
placed.
3. What is one of the most important functions of the aggregate base
beneath synthetic turf?
A. Provide structural support and drainage
B. Increase turf pile height
C. Replace seam tape
D. Eliminate the need for grading
Answer: A. Provide structural support and drainage
Rationale: A properly graded and compacted aggregate base provides a
firm working platform while allowing water to move through the system.
, 4. Why is positive drainage important for artificial turf?
A. It makes the turf darker
B. It prevents water from accumulating beneath or on the turf
C. It eliminates the need for a base
D. It increases seam width
Answer: B. It prevents water from accumulating beneath or on the turf
Rationale: Proper drainage reduces ponding, erosion, odors, and
deterioration of the installation.
5. Before beginning excavation, the contractor should first determine the
location of:
A. Turf seams only
B. Underground utilities
C. Infill bags
D. Turf grain
Answer: B. Underground utilities
Rationale: Utility identification is a critical excavation safety requirement
and helps prevent damage to buried electrical, gas, water, communication,
and other services.
, 6. What is the purpose of establishing finished elevations before
installation?
A. To determine turf color
B. To control grading, drainage, and final surface height
C. To determine adhesive drying time
D. To select infill color
Answer: B. To control grading, drainage, and final surface height
Rationale: Established elevations help the installer construct the base and
turf surface to the required grades and transitions.
7. Which tool is commonly used to compact an aggregate base?
A. Plate compactor
B. Paint roller
C. Utility knife
D. Carpet stretcher only
Answer: A. Plate compactor
Rationale: Plate compactors are commonly used to densify aggregate base
material and produce a stable installation surface.
8. What is the main purpose of a geotextile fabric when specified
beneath synthetic turf?
Contractor Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationales 2027 Q&A | Instant
Download Pdf
1. What is the primary purpose of properly compacting the subgrade
beneath an artificial turf installation?
A. Increase turf color
B. Prevent settlement and provide a stable foundation
C. Reduce the amount of infill required
D. Make the turf fibers softer
Answer: B. Prevent settlement and provide a stable foundation
Rationale: Proper subgrade preparation and compaction help prevent
differential settlement, rutting, and surface irregularities that can damage
the finished installation.
, 2. Which condition should be corrected before installing the aggregate
base?
A. Turf fiber direction
B. Infill color
C. Soft or unstable areas in the subgrade
D. Seam adhesive color
Answer: C. Soft or unstable areas in the subgrade
Rationale: Unstable areas can settle after installation and create
depressions or uneven surfaces. They should be repaired before the base is
placed.
3. What is one of the most important functions of the aggregate base
beneath synthetic turf?
A. Provide structural support and drainage
B. Increase turf pile height
C. Replace seam tape
D. Eliminate the need for grading
Answer: A. Provide structural support and drainage
Rationale: A properly graded and compacted aggregate base provides a
firm working platform while allowing water to move through the system.
, 4. Why is positive drainage important for artificial turf?
A. It makes the turf darker
B. It prevents water from accumulating beneath or on the turf
C. It eliminates the need for a base
D. It increases seam width
Answer: B. It prevents water from accumulating beneath or on the turf
Rationale: Proper drainage reduces ponding, erosion, odors, and
deterioration of the installation.
5. Before beginning excavation, the contractor should first determine the
location of:
A. Turf seams only
B. Underground utilities
C. Infill bags
D. Turf grain
Answer: B. Underground utilities
Rationale: Utility identification is a critical excavation safety requirement
and helps prevent damage to buried electrical, gas, water, communication,
and other services.
, 6. What is the purpose of establishing finished elevations before
installation?
A. To determine turf color
B. To control grading, drainage, and final surface height
C. To determine adhesive drying time
D. To select infill color
Answer: B. To control grading, drainage, and final surface height
Rationale: Established elevations help the installer construct the base and
turf surface to the required grades and transitions.
7. Which tool is commonly used to compact an aggregate base?
A. Plate compactor
B. Paint roller
C. Utility knife
D. Carpet stretcher only
Answer: A. Plate compactor
Rationale: Plate compactors are commonly used to densify aggregate base
material and produce a stable installation surface.
8. What is the main purpose of a geotextile fabric when specified
beneath synthetic turf?
