ARIZONA CR-21 HARDSCAPING & IRRIGATION SYSTEMS
CONTRACTOR EXAM REVIEW WITH COMPLETE SOLUTIONS
Question 1
The Arizona CR-21 license allows contractors to:
A. Install, alter, and repair approved hardscaping and irrigation systems
B. Perform unlimited electrical and plumbing work
C. Construct commercial buildings
D. Install swimming pools without restrictions
Correct Answer: A. Install, alter, and repair approved hardscaping and
irrigation systems
Explanation:
CR-21 is a specialty classification allowing approved hardscape and irrigation
work. It does not authorize unrestricted electrical, plumbing, structural, or
pool construction work.
Question 2
The CR-21 classification combines:
A. Residential and commercial hardscaping and irrigation scopes
B. Plumbing and electrical licenses
C. Roofing and HVAC licenses
D. General engineering licenses
Correct Answer: A. Residential and commercial hardscaping and
irrigation scopes
Explanation:
CR-21 is a dual classification covering the scopes permitted under residential
R-21 and commercial C-21 licenses.
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,Question 3
The minimum qualifying experience generally required for CR-21 licensing is:
A. Four years of qualifying experience
B. Six months of experience
C. One year of experience
D. No experience requirement
Correct Answer: A. Four years of qualifying experience
Explanation:
Arizona requires qualifying experience documentation for the license
applicant’s qualifying party.
Question 4
The CR-21 trade examination primarily tests knowledge of:
A. Hardscape installation, irrigation systems, materials, and safety practices
B. Medical procedures
C. Automotive repair
D. Accounting principles only
Correct Answer: A. Hardscape installation, irrigation systems, materials,
and safety practices
Explanation:
The trade exam focuses on practical construction knowledge related to
hardscaping and irrigation work.
Question 5
Non-loadbearing concrete work under CR-21 may include:
A. Concrete features that do not support structural loads
B. Building foundations
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,C. Structural columns
D. Loadbearing walls
Correct Answer: A. Concrete features that do not support structural
loads
Explanation:
CR-21 permits non-loadbearing concrete work but does not authorize
structural concrete construction.
Question 6
A paver installation requires proper:
A. Base preparation, leveling, and compaction
B. Electrical wiring
C. Structural engineering only
D. Roofing materials
Correct Answer: A. Base preparation, leveling, and compaction
Explanation:
Proper preparation prevents settlement, shifting, and uneven surfaces in
patios, walkways, and driveways.
Question 7
The purpose of compacting a base material is to:
A. Increase stability and reduce settlement
B. Make soil softer
C. Increase water leakage
D. Remove all drainage
Correct Answer: A. Increase stability and reduce settlement
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, Explanation:
Compaction creates a stronger foundation for hardscape installations.
Question 8
A retaining wall is designed primarily to:
A. Hold back soil and resist lateral pressure
B. Support electrical wiring
C. Replace irrigation valves
D. Store water
Correct Answer: A. Hold back soil and resist lateral pressure
Explanation:
Retaining walls stabilize changes in elevation by resisting soil movement.
Question 9
Proper drainage in hardscape construction prevents:
A. Water accumulation and structural damage
B. Proper grading
C. Soil stability
D. Material strength
Correct Answer: A. Water accumulation and structural damage
Explanation:
Poor drainage can cause erosion, cracking, settling, and failure of hardscape
features.
Question 10
The purpose of grading a landscape area is to:
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CONTRACTOR EXAM REVIEW WITH COMPLETE SOLUTIONS
Question 1
The Arizona CR-21 license allows contractors to:
A. Install, alter, and repair approved hardscaping and irrigation systems
B. Perform unlimited electrical and plumbing work
C. Construct commercial buildings
D. Install swimming pools without restrictions
Correct Answer: A. Install, alter, and repair approved hardscaping and
irrigation systems
Explanation:
CR-21 is a specialty classification allowing approved hardscape and irrigation
work. It does not authorize unrestricted electrical, plumbing, structural, or
pool construction work.
Question 2
The CR-21 classification combines:
A. Residential and commercial hardscaping and irrigation scopes
B. Plumbing and electrical licenses
C. Roofing and HVAC licenses
D. General engineering licenses
Correct Answer: A. Residential and commercial hardscaping and
irrigation scopes
Explanation:
CR-21 is a dual classification covering the scopes permitted under residential
R-21 and commercial C-21 licenses.
1|Page
,Question 3
The minimum qualifying experience generally required for CR-21 licensing is:
A. Four years of qualifying experience
B. Six months of experience
C. One year of experience
D. No experience requirement
Correct Answer: A. Four years of qualifying experience
Explanation:
Arizona requires qualifying experience documentation for the license
applicant’s qualifying party.
Question 4
The CR-21 trade examination primarily tests knowledge of:
A. Hardscape installation, irrigation systems, materials, and safety practices
B. Medical procedures
C. Automotive repair
D. Accounting principles only
Correct Answer: A. Hardscape installation, irrigation systems, materials,
and safety practices
Explanation:
The trade exam focuses on practical construction knowledge related to
hardscaping and irrigation work.
Question 5
Non-loadbearing concrete work under CR-21 may include:
A. Concrete features that do not support structural loads
B. Building foundations
2|Page
,C. Structural columns
D. Loadbearing walls
Correct Answer: A. Concrete features that do not support structural
loads
Explanation:
CR-21 permits non-loadbearing concrete work but does not authorize
structural concrete construction.
Question 6
A paver installation requires proper:
A. Base preparation, leveling, and compaction
B. Electrical wiring
C. Structural engineering only
D. Roofing materials
Correct Answer: A. Base preparation, leveling, and compaction
Explanation:
Proper preparation prevents settlement, shifting, and uneven surfaces in
patios, walkways, and driveways.
Question 7
The purpose of compacting a base material is to:
A. Increase stability and reduce settlement
B. Make soil softer
C. Increase water leakage
D. Remove all drainage
Correct Answer: A. Increase stability and reduce settlement
3|Page
, Explanation:
Compaction creates a stronger foundation for hardscape installations.
Question 8
A retaining wall is designed primarily to:
A. Hold back soil and resist lateral pressure
B. Support electrical wiring
C. Replace irrigation valves
D. Store water
Correct Answer: A. Hold back soil and resist lateral pressure
Explanation:
Retaining walls stabilize changes in elevation by resisting soil movement.
Question 9
Proper drainage in hardscape construction prevents:
A. Water accumulation and structural damage
B. Proper grading
C. Soil stability
D. Material strength
Correct Answer: A. Water accumulation and structural damage
Explanation:
Poor drainage can cause erosion, cracking, settling, and failure of hardscape
features.
Question 10
The purpose of grading a landscape area is to:
4|Page
