NYC Master Plumbers Exam 2025-2026 Questions & Answers. Graded A,
Exams of Engineering
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... - ANSWERBathroom Group
Combination drain and vent pipe shall have a maximum slope of... -
ANSWEROne-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: - ANSWERHydrogen-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... - ANSWERLot
line
When lagging is used on steam pipes, its main function is to... -
ANSWERReduce radiation heat loss
, What defines hot water? - ANSWERWater 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? - ANSWERCommon Vent
What is the definition of a relief vent? - ANSWERA 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: - ANSWER2" 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: - ANSWER3' 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... -
ANSWERA circuit vent
The commissioner of buildings of the City of New York, or his/her duly
authorized representative is considered to be the: - ANSWERCommissioner
What is the smallest pipe size that a condensate drain can be? - ANSWER3/4"
The licenses master plumber shall give "xxx" days notice to the commissioner
when the plumbing work is ready for tests - ANSWER2-Days
Exams of Engineering
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... - ANSWERBathroom Group
Combination drain and vent pipe shall have a maximum slope of... -
ANSWEROne-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: - ANSWERHydrogen-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... - ANSWERLot
line
When lagging is used on steam pipes, its main function is to... -
ANSWERReduce radiation heat loss
, What defines hot water? - ANSWERWater 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? - ANSWERCommon Vent
What is the definition of a relief vent? - ANSWERA 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: - ANSWER2" 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: - ANSWER3' 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... -
ANSWERA circuit vent
The commissioner of buildings of the City of New York, or his/her duly
authorized representative is considered to be the: - ANSWERCommissioner
What is the smallest pipe size that a condensate drain can be? - ANSWER3/4"
The licenses master plumber shall give "xxx" days notice to the commissioner
when the plumbing work is ready for tests - ANSWER2-Days
