NYC Master Plumbers Exam 2026 with all Correct & 100%
Verified Answers |Latest Version |Already Graded A+
A group of fixtures consisting of a water closet, lavatory, bath tub or shower, including or
excluding a bidet, and an emergency floor drain or both in the same room can be defined as a...
✔Correct Answer-Bathroom Group
Combination drain and vent pipe shall have a maximum slope of... ✔Correct Answer-One-half
unit vertical and 12 units horizontal
A combustible gas which may be present in sewer air and is explosive in the presence of oxygen:
✔Correct Answer-Hydrogen-Sulfide
The section of a building house sewer that a permit from the DEP is issued for is between the
spur connection of the street sewer and the... ✔Correct Answer-Lot line
When lagging is used on steam pipes, its main function is to... ✔Correct Answer-Reduce
radiation heat loss
What defines hot water? ✔Correct Answer-Water having a temperature range between 85F
and 110F
What kind of vent connection at the junction of two fixture drains or to a fixture branch serving
as a vent for both fixtures? ✔Correct Answer-Common Vent
What is the definition of a relief vent? ✔Correct Answer-A vent whose primary function is to
provide the circulation of air between drainage and vent systems
Each fixture trap shall have a liquid seal of not less than "xxx" inches and not more than "xxx"
inches: ✔Correct Answer-2" and 4"
A swimming pool is any structure basin, chamber, or tank containing an artificial body of water
for swimming, diving, or bathing having a depth of "xxx" or more: ✔Correct Answer-3' Feet
A vent that connects to a horizontal branch and vents (2) traps to a max of (8) traps or trapped
fixtures connected into a battery can be defined as... ✔Correct Answer-A circuit vent
The commissioner of buildings of the City of New York, or his/her duly authorized
representative is considered to be the: ✔Correct Answer-Commissioner
What is the smallest pipe size that a condensate drain can be? ✔Correct Answer-3/4"
, The licenses master plumber shall give "xxx" days notice to the commissioner when the
plumbing work is ready for tests ✔Correct Answer-2-Days
"xxx" inspections shall be made of all backflow prevention assemblies, air gaps, spill proof
vacuum breaker assemblies, and hose connections on backflow preventors to determine
whether they are operable. Such forms shall be retained by the owner and shall be made
available upon request to the department for a period of "xxx" years. ✔Correct Answer-
Annual
5 Years
What distance beyond an exterior building wall is the building drain no longer considered as
such? ✔Correct Answer-5' Feet
What is "Dezincification"? ✔Correct Answer-A form of corrosion and weakening of brass
objects. Zinc dissolves out of the brass alloy
Dezincification of brass pipe occurs most often with what type/blend of brass? ✔Correct
Answer-Yellow Brass
Branch intervals have a vertical measurement distance of "xxx" or more in developed length
between connections of horizontal branches. ✔Correct Answer-8' Feet
A branch leading from a soil, waste, vent, building drain, or building sewer and terminates at a
developed length of 2' or more by means of a plug, cap, blind flange, etc. is considered a...
✔Correct Answer-Dead End
Water head tests shall be applied to drainage systems either in its entirety or in sections.
However, no section shall be tested with less than a "xxx" foot head for less than "xxx" minutes.
✔Correct Answer-10' Foot
15 Minutes
What is "the lowest portion of the inside top surface of the channel through the trap"?
✔Correct Answer-The P-Trap Dip
A pipe that conveys only waste (free from fecal matter) is defined as: ✔Correct Answer-A
Waste Pipe
A pipe that conveys sewage containing fecal matter is defined as: ✔Correct Answer-A Soil Pipe
Sheet copper for general applications shall not weigh less than "xxx" ounces per square foot
✔Correct Answer-12 oz per ft²
Verified Answers |Latest Version |Already Graded A+
A group of fixtures consisting of a water closet, lavatory, bath tub or shower, including or
excluding a bidet, and an emergency floor drain or both in the same room can be defined as a...
✔Correct Answer-Bathroom Group
Combination drain and vent pipe shall have a maximum slope of... ✔Correct Answer-One-half
unit vertical and 12 units horizontal
A combustible gas which may be present in sewer air and is explosive in the presence of oxygen:
✔Correct Answer-Hydrogen-Sulfide
The section of a building house sewer that a permit from the DEP is issued for is between the
spur connection of the street sewer and the... ✔Correct Answer-Lot line
When lagging is used on steam pipes, its main function is to... ✔Correct Answer-Reduce
radiation heat loss
What defines hot water? ✔Correct Answer-Water having a temperature range between 85F
and 110F
What kind of vent connection at the junction of two fixture drains or to a fixture branch serving
as a vent for both fixtures? ✔Correct Answer-Common Vent
What is the definition of a relief vent? ✔Correct Answer-A vent whose primary function is to
provide the circulation of air between drainage and vent systems
Each fixture trap shall have a liquid seal of not less than "xxx" inches and not more than "xxx"
inches: ✔Correct Answer-2" and 4"
A swimming pool is any structure basin, chamber, or tank containing an artificial body of water
for swimming, diving, or bathing having a depth of "xxx" or more: ✔Correct Answer-3' Feet
A vent that connects to a horizontal branch and vents (2) traps to a max of (8) traps or trapped
fixtures connected into a battery can be defined as... ✔Correct Answer-A circuit vent
The commissioner of buildings of the City of New York, or his/her duly authorized
representative is considered to be the: ✔Correct Answer-Commissioner
What is the smallest pipe size that a condensate drain can be? ✔Correct Answer-3/4"
, The licenses master plumber shall give "xxx" days notice to the commissioner when the
plumbing work is ready for tests ✔Correct Answer-2-Days
"xxx" inspections shall be made of all backflow prevention assemblies, air gaps, spill proof
vacuum breaker assemblies, and hose connections on backflow preventors to determine
whether they are operable. Such forms shall be retained by the owner and shall be made
available upon request to the department for a period of "xxx" years. ✔Correct Answer-
Annual
5 Years
What distance beyond an exterior building wall is the building drain no longer considered as
such? ✔Correct Answer-5' Feet
What is "Dezincification"? ✔Correct Answer-A form of corrosion and weakening of brass
objects. Zinc dissolves out of the brass alloy
Dezincification of brass pipe occurs most often with what type/blend of brass? ✔Correct
Answer-Yellow Brass
Branch intervals have a vertical measurement distance of "xxx" or more in developed length
between connections of horizontal branches. ✔Correct Answer-8' Feet
A branch leading from a soil, waste, vent, building drain, or building sewer and terminates at a
developed length of 2' or more by means of a plug, cap, blind flange, etc. is considered a...
✔Correct Answer-Dead End
Water head tests shall be applied to drainage systems either in its entirety or in sections.
However, no section shall be tested with less than a "xxx" foot head for less than "xxx" minutes.
✔Correct Answer-10' Foot
15 Minutes
What is "the lowest portion of the inside top surface of the channel through the trap"?
✔Correct Answer-The P-Trap Dip
A pipe that conveys only waste (free from fecal matter) is defined as: ✔Correct Answer-A
Waste Pipe
A pipe that conveys sewage containing fecal matter is defined as: ✔Correct Answer-A Soil Pipe
Sheet copper for general applications shall not weigh less than "xxx" ounces per square foot
✔Correct Answer-12 oz per ft²
