Texas Plumbing Inspector Examination
Review with Answers and Rationales |
100% Pass Guaranteed | Graded A+
1. A plumbing permit is typically required before:
A. Purchasing materials
B. Beginning plumbing work
C. Scheduling inspection
D. Occupying a building
Permits authorize work and allow inspections during
construction.
2. If work is found non-compliant, the inspector should:
A. Ignore minor issues
B. Repair it personally
C. Issue a correction notice
D. Revoke the contractor’s license immediately
Inspectors document violations and require corrections.
3. Final approval is given when:
A. The contractor requests it
B. The owner pays fees
C. All work complies with code
D. Fixtures are installed only
Compliance with code is the basis for approval.
4. An inspector should avoid conflicts of interest by:
A. Inspecting only friends’ projects
B. Not inspecting work they installed or designed
C. Accepting contractor gifts
D. Working privately as a contractor on the same project
Objectivity and ethics are essential.
,Water Supply Systems
6. The minimum pressure required at a fixture is generally:
A. 5 psi
B. 10 psi
C. 15 psi
D. 50 psi
Most codes require at least 15 psi to ensure proper fixture
performance.
7. The maximum static water pressure allowed without a pressure
regulator is typically:
A. 40 psi
B. 60 psi
C. 80 psi
D. 120 psi
Pressures above 80 psi require pressure-reducing devices to
prevent damage.
8. Cross-connections are dangerous because they:
A. Reduce pressure
B. Increase water usage
C. Contaminate potable water
D. Cause leaks
They allow non-potable water to enter the drinking supply.
9. Backflow prevention is required when:
A. Any fixture is installed
B. A cross-connection hazard exists
C. Pressure is low
D. Pipe size exceeds 1 inch
Protection is based on hazard level.
10. An air gap is:
A. A vent opening
B. The vertical distance between a water outlet and flood
, level rim
C. A pipe fitting
D. A pressure device
Air gaps are the most reliable backflow prevention method.
Pipe Materials & Installation
11. Copper water tubing is commonly joined by:
A. Threading only
B. Soldering or brazing
C. Gluing only
D. Welding only
Standard methods for copper connections.
12. PVC pipe is approved for:
A. Hot water distribution
B. Gas systems
C. Drain, waste, and vent (DWV)
D. Steam lines
PVC is typically limited to DWV applications.
13. Horizontal plastic piping must be supported at intervals
not exceeding approximately:
A. 2 feet
B. 4 feet
C. 10 feet
D. 20 feet
Proper support prevents sagging and joint stress.
14. Dissimilar metals in contact may cause:
A. Expansion
B. Galvanic corrosion
C. Backflow
Review with Answers and Rationales |
100% Pass Guaranteed | Graded A+
1. A plumbing permit is typically required before:
A. Purchasing materials
B. Beginning plumbing work
C. Scheduling inspection
D. Occupying a building
Permits authorize work and allow inspections during
construction.
2. If work is found non-compliant, the inspector should:
A. Ignore minor issues
B. Repair it personally
C. Issue a correction notice
D. Revoke the contractor’s license immediately
Inspectors document violations and require corrections.
3. Final approval is given when:
A. The contractor requests it
B. The owner pays fees
C. All work complies with code
D. Fixtures are installed only
Compliance with code is the basis for approval.
4. An inspector should avoid conflicts of interest by:
A. Inspecting only friends’ projects
B. Not inspecting work they installed or designed
C. Accepting contractor gifts
D. Working privately as a contractor on the same project
Objectivity and ethics are essential.
,Water Supply Systems
6. The minimum pressure required at a fixture is generally:
A. 5 psi
B. 10 psi
C. 15 psi
D. 50 psi
Most codes require at least 15 psi to ensure proper fixture
performance.
7. The maximum static water pressure allowed without a pressure
regulator is typically:
A. 40 psi
B. 60 psi
C. 80 psi
D. 120 psi
Pressures above 80 psi require pressure-reducing devices to
prevent damage.
8. Cross-connections are dangerous because they:
A. Reduce pressure
B. Increase water usage
C. Contaminate potable water
D. Cause leaks
They allow non-potable water to enter the drinking supply.
9. Backflow prevention is required when:
A. Any fixture is installed
B. A cross-connection hazard exists
C. Pressure is low
D. Pipe size exceeds 1 inch
Protection is based on hazard level.
10. An air gap is:
A. A vent opening
B. The vertical distance between a water outlet and flood
, level rim
C. A pipe fitting
D. A pressure device
Air gaps are the most reliable backflow prevention method.
Pipe Materials & Installation
11. Copper water tubing is commonly joined by:
A. Threading only
B. Soldering or brazing
C. Gluing only
D. Welding only
Standard methods for copper connections.
12. PVC pipe is approved for:
A. Hot water distribution
B. Gas systems
C. Drain, waste, and vent (DWV)
D. Steam lines
PVC is typically limited to DWV applications.
13. Horizontal plastic piping must be supported at intervals
not exceeding approximately:
A. 2 feet
B. 4 feet
C. 10 feet
D. 20 feet
Proper support prevents sagging and joint stress.
14. Dissimilar metals in contact may cause:
A. Expansion
B. Galvanic corrosion
C. Backflow
