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 cor...
NYC Gas Code Exam Questions and
Answers
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.
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
Located on the supply side of the meter, every meter shall be equipped with a what? -
Answer-Shut off valve
Gas distribution piping with pressures up to 1/2 p.s.I.g, shall be tested at a pressure of
how many P.s.I.g?, and a minimum of how many minutes? - Answer-3 p.s.I.g for 30
minutes
What joints is acceptable in gas piping? - Answer-Threaded, flanged and welded
Gas meters and service piping is found in what part of the F.G.C? - Answer-Appendix E
What is the final step before you restore gas service after a shutdown? - Answer-The
gas utility company shall be notified by owner or his or her authorized representative.
All factory applied coated and wrapped pipe shall be pressure tested at a minimum of
what p.s.I.g? - Answer-90 p.s.ig.
The holder of the plumbing permit shall give how many days prior written notice for
inspection? - Answer-2 days
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