AZ L-82 Utility Line Construction
Contractor Questions And Correct
Answers (Verified Answers) Plus
Rationale2026 Q&A| Instant
Download Pdf
1. What is the primary purpose of a utility line easement?
A. To allow unrestricted public access
B. To limit construction activity in a specific area
C. To provide legal right to install and maintain utility lines
D. To generate revenue from property owners
Rationale: Easements provide legal rights for utility installation and
maintenance without transferring property ownership.
2. What type of soil is most prone to cave-ins during trenching?
A. Sandy soil
B. Loose or granular soil
C. Clay soil
D. Rocky soil
Rationale: Loose or granular soils lack cohesion and are more likely to
collapse in a trench.
3. OSHA requires that trenches deeper than what depth must have
protective systems?
A. 3 feet
B. 4 feet
C. 5 feet
D. 6 feet
,Rationale: OSHA standard 1926.650 requires protective systems for
trenches 5 feet or deeper.
4. When working near overhead power lines, what is the minimum
clearance for equipment rated up to 50 kV?
A. 5 feet
B. 10 feet
C. 15 feet
D. 20 feet
Rationale: OSHA requires a minimum clearance of 10 feet for lines up to
50 kV.
5. What is the primary purpose of cathodic protection on metal pipelines?
A. To improve water flow
B. To prevent leaks
C. To prevent corrosion
D. To strengthen the pipe
Rationale: Cathodic protection uses an electrical current to prevent metal
corrosion in pipelines.
6. Which type of conductor is typically used for high-voltage transmission
lines?
A. Copper-clad steel
B. Aluminum
C. Aluminum Conductor Steel Reinforced (ACSR)
D. Pure copper
Rationale: ACSR combines aluminum conductivity with steel strength for
high-voltage lines.
7. What is the recommended procedure for testing newly installed
underground utilities for leaks?
A. Visual inspection
B. Soil sampling
C. Pressure testing
D. Flow rate observation
, Rationale: Pressure testing ensures the integrity of pipes and detects leaks
before backfilling.
8. A utility contractor must have what type of insurance before beginning
work on public property?
A. Vehicle insurance
B. Fire insurance
C. General liability insurance
D. Life insurance
Rationale: General liability insurance protects against property damage
and injuries during construction.
9. Which tool is used to detect the location of buried utility lines?
A. Hammer
B. Pipe wrench
C. Ground-penetrating radar or utility locator
D. Measuring tape
Rationale: Utility locators detect buried lines to prevent accidental damage
during excavation.
10. What is the maximum allowable bend radius for a plastic water
main?
A. 5 times the diameter
B. 10 times the diameter
C. 15 times the diameter
D. 20 times the diameter
Rationale: Manufacturers and industry standards typically recommend a
minimum bend radius of 10 times the pipe diameter to prevent damage.
11. In trench excavation, what is the function of a trench box?
A. To transport materials
B. To measure trench depth
C. To protect workers from cave-ins
D. To mark utility lines
Contractor Questions And Correct
Answers (Verified Answers) Plus
Rationale2026 Q&A| Instant
Download Pdf
1. What is the primary purpose of a utility line easement?
A. To allow unrestricted public access
B. To limit construction activity in a specific area
C. To provide legal right to install and maintain utility lines
D. To generate revenue from property owners
Rationale: Easements provide legal rights for utility installation and
maintenance without transferring property ownership.
2. What type of soil is most prone to cave-ins during trenching?
A. Sandy soil
B. Loose or granular soil
C. Clay soil
D. Rocky soil
Rationale: Loose or granular soils lack cohesion and are more likely to
collapse in a trench.
3. OSHA requires that trenches deeper than what depth must have
protective systems?
A. 3 feet
B. 4 feet
C. 5 feet
D. 6 feet
,Rationale: OSHA standard 1926.650 requires protective systems for
trenches 5 feet or deeper.
4. When working near overhead power lines, what is the minimum
clearance for equipment rated up to 50 kV?
A. 5 feet
B. 10 feet
C. 15 feet
D. 20 feet
Rationale: OSHA requires a minimum clearance of 10 feet for lines up to
50 kV.
5. What is the primary purpose of cathodic protection on metal pipelines?
A. To improve water flow
B. To prevent leaks
C. To prevent corrosion
D. To strengthen the pipe
Rationale: Cathodic protection uses an electrical current to prevent metal
corrosion in pipelines.
6. Which type of conductor is typically used for high-voltage transmission
lines?
A. Copper-clad steel
B. Aluminum
C. Aluminum Conductor Steel Reinforced (ACSR)
D. Pure copper
Rationale: ACSR combines aluminum conductivity with steel strength for
high-voltage lines.
7. What is the recommended procedure for testing newly installed
underground utilities for leaks?
A. Visual inspection
B. Soil sampling
C. Pressure testing
D. Flow rate observation
, Rationale: Pressure testing ensures the integrity of pipes and detects leaks
before backfilling.
8. A utility contractor must have what type of insurance before beginning
work on public property?
A. Vehicle insurance
B. Fire insurance
C. General liability insurance
D. Life insurance
Rationale: General liability insurance protects against property damage
and injuries during construction.
9. Which tool is used to detect the location of buried utility lines?
A. Hammer
B. Pipe wrench
C. Ground-penetrating radar or utility locator
D. Measuring tape
Rationale: Utility locators detect buried lines to prevent accidental damage
during excavation.
10. What is the maximum allowable bend radius for a plastic water
main?
A. 5 times the diameter
B. 10 times the diameter
C. 15 times the diameter
D. 20 times the diameter
Rationale: Manufacturers and industry standards typically recommend a
minimum bend radius of 10 times the pipe diameter to prevent damage.
11. In trench excavation, what is the function of a trench box?
A. To transport materials
B. To measure trench depth
C. To protect workers from cave-ins
D. To mark utility lines
