NYC GAS CODE EXAM 2026 QUESTIONS AND ANSWERS | A+ GRADED | WITH EXPERT
SOLUTIONS
Where is the union located for a gas appliance? - (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? - (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.
How much must piping for other than dry gas conditions be sloped? - (ANSWER)Not less the 1/4 inch in
15 feet to prevent traps.
Hanger spacing for 3/4 inch and 1 inch gas pipe - (ANSWER)8 feet
When is water permitted for testing? - (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? - (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? -
(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? - (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.
, NYC GAS CODE EXAM 2026 QUESTIONS AND ANSWERS | A+ GRADED | WITH EXPERT
SOLUTIONS
Threaded pipe may be used up to 4 inches at pressure no greater than? - (ANSWER)1/2 p.s.i.g.
Gas piping going through the foundation wall of a building, shall be protected by? - (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? - (ANSWER)2 inches.
All exterior gas piping shall be elevated not less than how many inches above ground and roof surfaces?
- (ANSWER)3 1/2 inches.
The untreated portion of gas piping outlets must extend at least how many inch through finished
ceilings and walls? - (ANSWER)1 inch
Underground piping systems shall be installed a minimum depth of, how many inches below grade? -
(ANSWER)24 inches
The unthreatened portion of gas piping outlets extending through floors or outdoor patios and slabs
must extend at least, how many inches above them? - (ANSWER)2 inches
What gas is prohibited from being used for testing gas piping? - (ANSWER)Oxygen
The testing duration for gas piping with distribution pressures over 1/2 p.s.I.g through 5 p.s.I.g is? -
(ANSWER)50 p.s.I.g for a minimum of 30 minutes.
Supports for 1 inch gas piping shall be spaced no more than, how many feet apart? - (ANSWER)8 feet
The gas shut off valve shall be within how many feet of the appliance? - (ANSWER)6 feet
SOLUTIONS
Where is the union located for a gas appliance? - (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? - (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.
How much must piping for other than dry gas conditions be sloped? - (ANSWER)Not less the 1/4 inch in
15 feet to prevent traps.
Hanger spacing for 3/4 inch and 1 inch gas pipe - (ANSWER)8 feet
When is water permitted for testing? - (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? - (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? -
(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? - (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.
, NYC GAS CODE EXAM 2026 QUESTIONS AND ANSWERS | A+ GRADED | WITH EXPERT
SOLUTIONS
Threaded pipe may be used up to 4 inches at pressure no greater than? - (ANSWER)1/2 p.s.i.g.
Gas piping going through the foundation wall of a building, shall be protected by? - (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? - (ANSWER)2 inches.
All exterior gas piping shall be elevated not less than how many inches above ground and roof surfaces?
- (ANSWER)3 1/2 inches.
The untreated portion of gas piping outlets must extend at least how many inch through finished
ceilings and walls? - (ANSWER)1 inch
Underground piping systems shall be installed a minimum depth of, how many inches below grade? -
(ANSWER)24 inches
The unthreatened portion of gas piping outlets extending through floors or outdoor patios and slabs
must extend at least, how many inches above them? - (ANSWER)2 inches
What gas is prohibited from being used for testing gas piping? - (ANSWER)Oxygen
The testing duration for gas piping with distribution pressures over 1/2 p.s.I.g through 5 p.s.I.g is? -
(ANSWER)50 p.s.I.g for a minimum of 30 minutes.
Supports for 1 inch gas piping shall be spaced no more than, how many feet apart? - (ANSWER)8 feet
The gas shut off valve shall be within how many feet of the appliance? - (ANSWER)6 feet
