Nyc gas code exam questions with correct answers.

Nyc gas code exam questions with
correct answers

Where is the union located for a gas appliance? - CORRECT ANSWER✔✔-A union
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fitting shall be provided for appliance connected by rigid metallic pipe. Such
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unions shall be accessible and located within 6 feet of the appliance.
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Where is gas piping permitted? - CORRECT ANSWER✔✔-Gas piping may be
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installed in public corridors in residential buildings that do not have floors below
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grade or in multi use buildings that have a residential occupancy in accordance
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with the following, Gas piping shall be permitted to be installed within a public
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corridor at the lowest level of the building or the lowest residential level of the
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building. All gas valves located within the public corridor shall be accessible for
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maintenance and inspection. Gas pressure within the public corridor piping shall
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not exceed 1/2 psi. The completed piping within the public corridor is to be
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tested and proven tight at 10 psig for a minimum of 30 minutes. The public
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corridor shall be ventilated in accordance with the New York City Mechanical
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Code. The pipe shall not be installed in a return air plenum. Pipes must be
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welded.


How much must piping for other than dry gas conditions be sloped? - CORRECT
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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
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When is water permitted for testing? - CORRECT ANSWER✔✔-Fresh water may
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be used the test medium where the required test pressure exceeds 100 p.s.i.g.
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, When do need temporary restraints when testing? - CORRECT ANSWER✔✔-
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Expansion joints shall be provided with temporary restraints, if required, for the
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additional trust load under test. | | | |




What must each digital gauge used to measure pressure in the magnitude of 3
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and higher read? - CORRECT ANSWER✔✔-The gauge shall have a minimum
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reading of 1/100 of a p.s.i.g.
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Where pipe passes through an outside wall, this piping shall not be less than how
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many inches outside of the buildings? - CORRECT ANSWER✔✔-With conduit
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going through the wall, pipe shall not be less than 4 inches outside the building
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and sleeve shall be at least 1 inch beyond the inner side of the wall. Pipe shall be
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vented above grade to the outdoors and shall be installed so as to prevent the
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entrance of water and insects.
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Threaded pipe may be used up to 4 inches at pressure no greater than? -
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CORRECT ANSWER✔✔-1/2 p.s.i.g. | |




Gas piping going through the foundation wall of a building, shall be protected by?
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- CORRECT ANSWER✔✔-Encasing it in a protective sleeve.
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Gas piping in solid floor shall be installed in a conduit of schedule 40 pipe. This
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conduit shall extend not less than how many inches above the floor? - CORRECT
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ANSWER✔✔-2 inches. |