AZ L-90 Artificial Turf Installation
Contractor Exam Questions And
Correct Answers (Verified Answers) Plus
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1. What is the primary purpose of a sub-base in artificial turf installation?
A) Improve aesthetics
B) Provide a stable and level surface
C) Reduce water usage
D) Increase UV resistance
B) Provide a stable and level surface
Rationale: A properly prepared sub-base ensures stability, proper drainage,
and prevents uneven turf surfaces.
2. Which material is commonly used as a base layer under artificial turf?
A) Sand
B) Asphalt
C) Crushed stone
D) Clay
C) Crushed stone
Rationale: Crushed stone provides good drainage and a stable base for turf
installation.
3. What is the recommended slope for artificial turf installations to ensure
proper drainage?
A) 0%
, B) 1–2%
C) 5–10%
D) 10–15%
B) 1–2%
Rationale: A slight slope helps water drain without causing pooling or
erosion.
4. Which type of infill is most commonly used for sports turf?
A) Rubber crumb
B) Pea gravel
C) Clay
D) Organic mulch
A) Rubber crumb
Rationale: Rubber crumb provides cushioning, reduces impact injuries,
and supports turf fiber uprightness.
5. What is the recommended method for joining two artificial turf seams?
A) Sewing with nylon thread
B) Gluing with a turf adhesive
C) Overlapping edges without adhesive
D) Using zip ties
B) Gluing with a turf adhesive
Rationale: Adhesive ensures a strong, invisible seam and prevents turf from
separating under traffic.
6. Which tool is essential for compacting the sub-base?
A) Shovel
B) Plate compactor
C) Wheelbarrow
D) Lawn roller
B) Plate compactor
Rationale: A plate compactor ensures a stable and level sub-base, critical
for turf longevity.
, 7. Why is geotextile fabric sometimes installed beneath turf?
A) For aesthetics
B) To prevent weed growth and improve stability
C) To increase turf softness
D) To reduce installation time
B) To prevent weed growth and improve stability
Rationale: Geotextile fabric separates the soil from the base, preventing
weeds from growing through the turf.
8. What is the ideal turf pile height for a residential lawn?
A) 0.5–1 inch
B) 1–2 inches
C) 1.5–2.5 inches
D) 3–4 inches
C) 1.5–2.5 inches
Rationale: This height balances appearance, comfort, and durability for
most residential applications.
9. When installing turf on a slope, which technique helps prevent turf
from shifting?
A) Reducing infill
B) Using turf stakes or pins
C) Leaving seams loose
D) Avoiding adhesive
B) Using turf stakes or pins
Rationale: Stakes or pins secure turf on slopes and prevent sliding.
10. How often should synthetic turf be brushed to maintain fiber
uprightness?
A) Monthly
B) Weekly
C) Daily
D) Annually
Contractor Exam Questions And
Correct Answers (Verified Answers) Plus
Rationale2026 Q&A| Instant Download
1. What is the primary purpose of a sub-base in artificial turf installation?
A) Improve aesthetics
B) Provide a stable and level surface
C) Reduce water usage
D) Increase UV resistance
B) Provide a stable and level surface
Rationale: A properly prepared sub-base ensures stability, proper drainage,
and prevents uneven turf surfaces.
2. Which material is commonly used as a base layer under artificial turf?
A) Sand
B) Asphalt
C) Crushed stone
D) Clay
C) Crushed stone
Rationale: Crushed stone provides good drainage and a stable base for turf
installation.
3. What is the recommended slope for artificial turf installations to ensure
proper drainage?
A) 0%
, B) 1–2%
C) 5–10%
D) 10–15%
B) 1–2%
Rationale: A slight slope helps water drain without causing pooling or
erosion.
4. Which type of infill is most commonly used for sports turf?
A) Rubber crumb
B) Pea gravel
C) Clay
D) Organic mulch
A) Rubber crumb
Rationale: Rubber crumb provides cushioning, reduces impact injuries,
and supports turf fiber uprightness.
5. What is the recommended method for joining two artificial turf seams?
A) Sewing with nylon thread
B) Gluing with a turf adhesive
C) Overlapping edges without adhesive
D) Using zip ties
B) Gluing with a turf adhesive
Rationale: Adhesive ensures a strong, invisible seam and prevents turf from
separating under traffic.
6. Which tool is essential for compacting the sub-base?
A) Shovel
B) Plate compactor
C) Wheelbarrow
D) Lawn roller
B) Plate compactor
Rationale: A plate compactor ensures a stable and level sub-base, critical
for turf longevity.
, 7. Why is geotextile fabric sometimes installed beneath turf?
A) For aesthetics
B) To prevent weed growth and improve stability
C) To increase turf softness
D) To reduce installation time
B) To prevent weed growth and improve stability
Rationale: Geotextile fabric separates the soil from the base, preventing
weeds from growing through the turf.
8. What is the ideal turf pile height for a residential lawn?
A) 0.5–1 inch
B) 1–2 inches
C) 1.5–2.5 inches
D) 3–4 inches
C) 1.5–2.5 inches
Rationale: This height balances appearance, comfort, and durability for
most residential applications.
9. When installing turf on a slope, which technique helps prevent turf
from shifting?
A) Reducing infill
B) Using turf stakes or pins
C) Leaving seams loose
D) Avoiding adhesive
B) Using turf stakes or pins
Rationale: Stakes or pins secure turf on slopes and prevent sliding.
10. How often should synthetic turf be brushed to maintain fiber
uprightness?
A) Monthly
B) Weekly
C) Daily
D) Annually
