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NYC GAS CODE EXAM 2026
QUESTIONS AND ANSWERS | A+
GRADED | WITH EXPERT SOLUTIONS
Where is the union located for a gas appliance? - correct answer-
A union fitting shall be provided for appliance connected by rigid
metallic pipe. Such unions shall be accessible and located within
6 feet of the appliance.
Where is gas piping permitted? - correct answer-Gas piping may
be installed in public corridors in residential buildings that do not
have floors below grade or in multi use buildings that have a
residential occupancy in accordance with the following, Gas
piping shall be permitted to be installed within a public corridor at
the lowest level of the building or the lowest residential level of the
building. All gas valves located within the public corridor shall be
accessible for maintenance and inspection. Gas pressure within
the public corridor piping shall not exceed 1/2 psi. The completed
piping within the public corridor is to be tested and proven tight at
10 psig for a minimum of 30 minutes. The public corridor shall be
ventilated in accordance with the New York City Mechanical
Code. The pipe shall not be installed in a return air plenum. Pipes
must be welded.
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How much must piping for other than dry gas conditions be
sloped? - correct answer-Not less the 1/4 inch in 15 feet to
prevent traps.
Hanger spacing for 3/4 inch and 1 inch gas pipe - correct answer-
8 feet
When is water permitted for testing? - correct answer-Fresh water
may be used the test medium where the required test pressure
exceeds 100 p.s.i.g.
When do need temporary restraints when testing? - correct
answer-Expansion joints shall be provided with temporary
restraints, if required, for the additional trust load under test.
What must each digital gauge used to measure pressure in the
magnitude of 3 and higher read? - correct answer-The gauge
shall have a minimum reading of 1/100 of a p.s.i.g.
Where pipe passes through an outside wall, this piping shall not
be less than how many inches outside of the buildings? - correct
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answer-With conduit going through the wall, pipe shall not be less
than 4 inches outside the building and sleeve shall be at least 1
inch beyond the inner side of the wall. Pipe shall be vented above
grade to the outdoors and shall be installed so as to prevent the
entrance of water and insects.
Threaded pipe may be used up to 4 inches at pressure no greater
than? - correct answer-1/2 p.s.i.g.
Gas piping going through the foundation wall of a building, shall
be protected by? - correct answer-Encasing it in a protective
sleeve.
Gas piping in solid floor shall be installed in a conduit of schedule
40 pipe. This conduit shall extend not less than how many inches
above the floor? - correct answer-2 inches.
All exterior gas piping shall be elevated not less than how many
inches above ground and roof surfaces? - correct answer-3 1/2
inches.
NYC GAS CODE EXAM 2026
QUESTIONS AND ANSWERS | A+
GRADED | WITH EXPERT SOLUTIONS
Where is the union located for a gas appliance? - correct answer-
A union fitting shall be provided for appliance connected by rigid
metallic pipe. Such unions shall be accessible and located within
6 feet of the appliance.
Where is gas piping permitted? - correct answer-Gas piping may
be installed in public corridors in residential buildings that do not
have floors below grade or in multi use buildings that have a
residential occupancy in accordance with the following, Gas
piping shall be permitted to be installed within a public corridor at
the lowest level of the building or the lowest residential level of the
building. All gas valves located within the public corridor shall be
accessible for maintenance and inspection. Gas pressure within
the public corridor piping shall not exceed 1/2 psi. The completed
piping within the public corridor is to be tested and proven tight at
10 psig for a minimum of 30 minutes. The public corridor shall be
ventilated in accordance with the New York City Mechanical
Code. The pipe shall not be installed in a return air plenum. Pipes
must be welded.
, Page | 2
How much must piping for other than dry gas conditions be
sloped? - correct answer-Not less the 1/4 inch in 15 feet to
prevent traps.
Hanger spacing for 3/4 inch and 1 inch gas pipe - correct answer-
8 feet
When is water permitted for testing? - correct answer-Fresh water
may be used the test medium where the required test pressure
exceeds 100 p.s.i.g.
When do need temporary restraints when testing? - correct
answer-Expansion joints shall be provided with temporary
restraints, if required, for the additional trust load under test.
What must each digital gauge used to measure pressure in the
magnitude of 3 and higher read? - correct answer-The gauge
shall have a minimum reading of 1/100 of a p.s.i.g.
Where pipe passes through an outside wall, this piping shall not
be less than how many inches outside of the buildings? - correct
, Page | 3
answer-With conduit going through the wall, pipe shall not be less
than 4 inches outside the building and sleeve shall be at least 1
inch beyond the inner side of the wall. Pipe shall be vented above
grade to the outdoors and shall be installed so as to prevent the
entrance of water and insects.
Threaded pipe may be used up to 4 inches at pressure no greater
than? - correct answer-1/2 p.s.i.g.
Gas piping going through the foundation wall of a building, shall
be protected by? - correct answer-Encasing it in a protective
sleeve.
Gas piping in solid floor shall be installed in a conduit of schedule
40 pipe. This conduit shall extend not less than how many inches
above the floor? - correct answer-2 inches.
All exterior gas piping shall be elevated not less than how many
inches above ground and roof surfaces? - correct answer-3 1/2
inches.
