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Under the SPC as adopted in Connecticut, what is the minimum size drain pipe required for a water closet?
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Key Facts: CT Plumber Exam
70%
Passing Score
DCP Plumbing Examining Board
80
Questions
3 hours time limit
~$150
Exam Fee
State-administered
SPC
Code Basis
Connecticut uses the State Plumbing Code (SPC), which is based on the IPC with Connecticut-specific amendments
Connecticut's journeyman plumber exam has approximately a 60% pass rate. The 80-question exam requires 70% to pass and is based on the SPC. Connecticut uses the State Plumbing Code (SPC), which is based on the IPC with Connecticut-specific amendments.
Sample CT Plumber Practice Questions
Try these sample questions to test your CT Plumber exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1Under the SPC as adopted in Connecticut, what is the minimum size drain pipe required for a water closet?
2According to the SPC as enforced in Connecticut, what is the minimum slope for a 4-inch horizontal drainage pipe?
3Under Connecticut's plumbing code, what is the DFU value for a residential lavatory?
4Per the SPC as adopted in Connecticut, what is the minimum depth of a fixture trap seal?
5According to the SPC as enforced in Connecticut, at what intervals must cleanouts be installed on horizontal drainage piping 4 inches and smaller?
6Under the SPC as adopted in Connecticut, what is the maximum number of DFUs that can be connected to a 3-inch horizontal branch?
7Per the SPC as enforced in Connecticut, what is the required slope for a 2-inch horizontal drainage pipe?
8According to the SPC as adopted in Connecticut, what is the minimum size building sewer when serving more than one water closet?
9Under the SPC as enforced in Connecticut, what is the maximum tailpiece length from a fixture outlet to the trap weir?
10Per the SPC as adopted in Connecticut, what is the DFU value for a residential bathtub with shower?
About the CT Plumber Exam
The Connecticut journeyman plumber exam is administered by State-administered on behalf of the DCP Plumbing Examining Board. The exam is administered directly by the Connecticut DCP Plumbing Examining Board. It tests knowledge of the SPC, drainage systems, water supply, venting, gas piping, and Connecticut-specific amendments.
Questions
80 scored questions
Time Limit
3 hours
Passing Score
70%
Exam Fee
~$150 (DCP Plumbing Examining Board)
CT Plumber Exam Content Outline
Drainage, Waste & Vent Systems
SPC drain sizing, fixture units, slope requirements, cleanouts, trap seals, and DWV installation per Connecticut amendments
Water Supply & Distribution
Pipe sizing, backflow prevention, cross-connection control, water heaters, pressure regulation, and T&P relief requirements
Venting Systems
Vent sizing, wet venting, circuit venting, air admittance valves, vent termination per the SPC
Gas Piping & Appliances
Gas pipe sizing, BTU calculations, pressure testing, appliance venting, and combustion air requirements
Code Administration & Materials
Permits, inspections, approved materials, joint methods, pipe supports, and Connecticut-specific rules
How to Pass the CT Plumber Exam
What You Need to Know
- Passing score: 70%
- Exam length: 80 questions
- Time limit: 3 hours
- Exam fee: ~$150
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
CT Plumber Study Tips from Top Performers
Frequently Asked Questions
What plumbing code does Connecticut use?
Connecticut uses the State Plumbing Code (SPC), which is based on the IPC with Connecticut-specific amendments. The DCP Plumbing Examining Board oversees all licensing requirements. The exam is based on the current adopted SPC edition.
How many questions are on the Connecticut plumber exam?
The Connecticut journeyman plumber exam has approximately 80 multiple-choice questions with a time limit of 3 hours. A score of 70% is required to pass.
Who administers the Connecticut plumber exam?
The exam is administered by State-administered on behalf of the DCP Plumbing Examining Board. You must apply through the agency and schedule your exam through State-administered's testing system.
What experience is required for the Connecticut journeyman plumber exam?
Completion of 5-year registered apprenticeship or 10 years of experience under a licensed plumber. Contact the DCP Plumbing Examining Board for specific requirements and application procedures.