The term "gas piping" shall mean the installation, repair, replacement and relocation of pipes, fixtures and other apparatus for distributing the gas supply supplied by a public utility for illumination or fuel in any premises.
Gas supply and distribution pipes shall be made of suitable material. Such pipes shall have tight joints. When the gas piping system is completed, it shall be tested in accordance with the rules of the Board.
Each gas service connection which is brought into a structure shall be fitted with a straightway stopcock or shutoff valve. Such stopcock or valve shall be placed in an accessible position immediately inside of the wall through which such connection enters.
All gas pipes shall conform to the standard specifications of the ASTM, D.A. 120-36, A 72-38, A 44-04, B 42-33 and B 43-33 for steel, wrought iron, cast iron, copper and brass pipe, respectively. Piping shall be at least 3/8 inch in diameter. Cast-iron pipe shall be used only underground or outside of structures.
A. 
Generally. All pipes shall be run straight without sags or traps and shall be so pitched as to drain back to the riser and from the riser to the meter. Drops shall be secured with at least one solid metal strap.
B. 
Drip pocket. A drip pocket consisting of a nipple screwed into the bottom of each riser and provided with a cap shall be installed at the base of each gas riser and at all lower points of the gas distribution system.
C. 
Protection. Any piping which is exposed to outdoor temperature shall be protected against frost. Where such piping is laid in concrete, such piping shall be coated with preservative paint.
D. 
Branch outlets. Branch outlet pipes shall be taken from the top or sides of the horizontal lines and not from the bottom.
A. 
Generally. Gas pipe fittings shall be malleable or brass screwed fittings. It shall be unlawful to use running threads, but right and left couplings and unions shall be used.
B. 
Stopcocks and valves. Stopcocks shall be made of heavy cast iron or brass bodies with brass plugs, except that in pipes three inches in diameter or larger, stopcocks or valves with cast-iron bodies and brass plugs or brass mounting may be used. Stopcocks and valves shall be tight. Stopcocks on branches shall be provided with T-handles and shall be capable of being operated by the building occupants.
Outlets from concealed piping shall extend one inch through the finished ceiling or wall. Either the outlet fitting or the pipe shall be securely fastened to the wall or stud. All outlets shall be capped until the fixtures are attached.
Piping systems shall be so proportioned as to give adequate volumetric flow of gas to all lighting, cooking and heating fixtures or appliances which are supplied or intended to be supplied from the piping system.
The minimum diameter of outlets for gas ranges shall be 3/4 inch. All gas ranges and heaters shall have a straightway stopcock or valve on each branch supply to such devices.
A. 
Location. Gas brackets and fixtures shall be so placed that the burners are a minimum of three feet below any ceiling or woodwork, except that where proper protection is furnished by a shield, the distance may be 18 inches or more.
B. 
Use of swinging, folding brackets. It shall be unlawful to use swinging or folding gas brackets.
C. 
Brackets on partition, woodwork. Gas brackets on any lath and plaster partition or on any woodwork shall be at least five inches in length, measured from the burner to the plastered surface or woodwork.
[Amended 4-27-1981 by L.L. No. 7-1981]
A. 
After all piping is installed and all outlets are capped, the plumber shall apply an air pressure test equal to a column of mercury six inches in height, or 15 pounds air pressure, in the presence of an inspector of the Department. Such pressure shall be maintained for at least 10 minutes. A mercury gauge may be used. It shall be unlawful to cover up any piping or the connection to such piping of any meter, gas fixture, gas heater or range until a certificate showing the approval of such test has been issued by the Superintendent.
B. 
The Board of Trustees by resolution shall adopt and from time to time may amend a schedule of fees payable by an applicant for said certificate.
[Amended 2-26-1990 by L.L. No. 25-1990]
A. 
Meters shall be located as near as practicable to the point of entrance of the service, and where possible such meters shall be located in the cellar or basement except by special permission from the Superintendent. The meter locations shall be clean, dry and free from steam or chemical fumes.
B. 
Such meters shall be protected against extreme cold or heat, shall be properly ventilated and shall be readily accessible for reading and inspection.
It shall be unlawful for any gas company to set any meters until there is filed with such gas company a certificate from the Department of Buildings certifying that the gas pipes and fixtures supplied through such meters comply with the provisions of this article.