All of the provisions of the Plumbing Code shall
be considered a part of this code.
The installation, repair, replacement and relocation
of pipes, fixtures and other apparatus for distributing gas supply
in any premises shall hereafter be performed by a licensed plumber
in accordance with the rules promulgated by the Superintendent of
Buildings.
A. Test of gas piping. After all piping is installed
and all outlets capped, the plumber shall apply, in the presence of
the Superintendent of Buildings, an air-pressure test equal to a column
of mercury six inches in height, which shall be maintained for at
least 10 minutes. A mercury gauge shall be used. The covering up of
any piping or the connection thereto of any meter, gas fixture, gas
heater or range is forbidden until a certificate showing the approval
of this test has been issued by the Superintendent.
B. Setting of gas meters. The setting of meters by any
gas company is forbidden until a certificate is filed with it from
the Superintendent of Buildings certifying that the gas piping has
been inspected and the test requirements have been complied with.