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Kansas Standard Master Plumber 557 with Gas
Practice Exam Actual exam Questions with Correct
Answers and explanations LATEST THIS YEAR -JUST
RELEASED
Summarized Exam Coverage – KS Standard Master Plumber with Gas
Kansas Plumbing Code (based on IPC), Kansas Fuel Gas Code (based on IFGC), licensing requirements
(K.A.R. 22-1), plumbing fixtures and trap requirements, drainage, waste and vent (DWV) systems, water
supply and distribution (potable and non-potable), backflow prevention and cross-connection control
(RPZ, DCVA, AVB), gas piping (materials, sizing, pressure testing, appliance connectors), gas appliance
venting (B-vent, direct vent, category IV), water heaters (gas and electric), fixture rough-ins, storm
drainage, plumbing math (fixture units, pipe sizing, slope), Kansas lien law (K.S.A. 58-3501), business and
law (contracts, licensing, insurance), and safety (OSHA, excavation, confined space, gas leak response).
1. A Kansas master plumber is installing a new gas water heater in a basement. The water heater is
40,000 BTU/hr. The minimum clearance from the vent connector to combustible material is:
A) 1 inch
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B) 3 inches
C) 6 inches
D) 9 inches
Answer: C – IFGC requires 6 inches clearance for single-wall vent connectors to combustibles.
2. A plumbing contractor is called to replace a toilet in a single-family home. The existing flange is
cracked and below the finished floor. The plumber should:
A) Install a spacer ring and new wax ring
B) Break the concrete and replace the entire flange
C) Use a flange repair ring
D) Both A and C
Answer: D – Spacer rings or repair rings can raise the flange without breaking concrete.
3. A master plumber is installing a gas pipe system using black steel pipe. The longest run from the
meter to the farthest appliance is 60 feet. The total load is 200,000 BTU/hr. Using the IFGC sizing table,
what is the minimum pipe size for a 1/2-inch water column pressure drop?
A) 1/2 inch
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B) 3/4 inch
C) 1 inch
D) 1 1/4 inch
Answer: C – 1 inch is typical for 200,000 BTU at 60 feet for natural gas.
4. A Kansas homeowner hires a master plumber to install a new bathroom. The plumber must obtain a
permit. The permit is issued by:
A) The Kansas State Plumbing Board
B) The local city or county building department
C) The homeowner
D) The gas utility
Answer: B – Permits are issued by local authority having jurisdiction (city/county).
5. An existing building has a backflow prevention device that fails a test. The device is an RPZ (reduced
pressure zone). The plumber must:
A) Repair or replace the device within 15 days
B) Bypass the device
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C) Notify the water utility only
D) Remove the device permanently
Answer: A – Failed RPZ must be repaired or replaced promptly (typically within 15 days).
6. A gas piping system is pressure tested with air at 20 psi for 30 minutes. The pressure drops from 20
psi to 19 psi. The plumber should:
A) Accept the test (5% drop is allowed)
B) Locate and repair the leak
C) Increase test pressure to 30 psi
D) Test with soap bubbles only
Answer: B – Any pressure drop indicates a leak; must be located and repaired.
7. A master plumber is roughing in a kitchen sink. The horizontal drainage pipe from the sink to the stack
is 8 feet long. The required slope is:
A) 1/8 inch per foot
B) 1/4 inch per foot
Kansas Standard Master Plumber 557 with Gas
Practice Exam Actual exam Questions with Correct
Answers and explanations LATEST THIS YEAR -JUST
RELEASED
Summarized Exam Coverage – KS Standard Master Plumber with Gas
Kansas Plumbing Code (based on IPC), Kansas Fuel Gas Code (based on IFGC), licensing requirements
(K.A.R. 22-1), plumbing fixtures and trap requirements, drainage, waste and vent (DWV) systems, water
supply and distribution (potable and non-potable), backflow prevention and cross-connection control
(RPZ, DCVA, AVB), gas piping (materials, sizing, pressure testing, appliance connectors), gas appliance
venting (B-vent, direct vent, category IV), water heaters (gas and electric), fixture rough-ins, storm
drainage, plumbing math (fixture units, pipe sizing, slope), Kansas lien law (K.S.A. 58-3501), business and
law (contracts, licensing, insurance), and safety (OSHA, excavation, confined space, gas leak response).
1. A Kansas master plumber is installing a new gas water heater in a basement. The water heater is
40,000 BTU/hr. The minimum clearance from the vent connector to combustible material is:
A) 1 inch
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B) 3 inches
C) 6 inches
D) 9 inches
Answer: C – IFGC requires 6 inches clearance for single-wall vent connectors to combustibles.
2. A plumbing contractor is called to replace a toilet in a single-family home. The existing flange is
cracked and below the finished floor. The plumber should:
A) Install a spacer ring and new wax ring
B) Break the concrete and replace the entire flange
C) Use a flange repair ring
D) Both A and C
Answer: D – Spacer rings or repair rings can raise the flange without breaking concrete.
3. A master plumber is installing a gas pipe system using black steel pipe. The longest run from the
meter to the farthest appliance is 60 feet. The total load is 200,000 BTU/hr. Using the IFGC sizing table,
what is the minimum pipe size for a 1/2-inch water column pressure drop?
A) 1/2 inch
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B) 3/4 inch
C) 1 inch
D) 1 1/4 inch
Answer: C – 1 inch is typical for 200,000 BTU at 60 feet for natural gas.
4. A Kansas homeowner hires a master plumber to install a new bathroom. The plumber must obtain a
permit. The permit is issued by:
A) The Kansas State Plumbing Board
B) The local city or county building department
C) The homeowner
D) The gas utility
Answer: B – Permits are issued by local authority having jurisdiction (city/county).
5. An existing building has a backflow prevention device that fails a test. The device is an RPZ (reduced
pressure zone). The plumber must:
A) Repair or replace the device within 15 days
B) Bypass the device
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C) Notify the water utility only
D) Remove the device permanently
Answer: A – Failed RPZ must be repaired or replaced promptly (typically within 15 days).
6. A gas piping system is pressure tested with air at 20 psi for 30 minutes. The pressure drops from 20
psi to 19 psi. The plumber should:
A) Accept the test (5% drop is allowed)
B) Locate and repair the leak
C) Increase test pressure to 30 psi
D) Test with soap bubbles only
Answer: B – Any pressure drop indicates a leak; must be located and repaired.
7. A master plumber is roughing in a kitchen sink. The horizontal drainage pipe from the sink to the stack
is 8 feet long. The required slope is:
A) 1/8 inch per foot
B) 1/4 inch per foot
