No unauthorized person shall uncover, make any
connections with or opening into, use, alter or disturb any public
sewer or appurtenance thereof without first obtaining a written permit
from the Bureau.
All costs and expense incident to the installation
and connection of the building sewer shall be borne by the owner.
The owner shall indemnify the City from any loss or damage (including
claims of others against the City) that may directly or indirectly
be occasioned by the owner's installation of the building sewer.
A separate and independent building sewer shall
be provided for every building; except where one building stands at
the rear of another on an interior lot and no private sewer is available
or can be constructed to the rear building through an adjoining alley,
court, yard or driveway, the building sewer for the front building
may be extended to the rear building and the whole considered as one
building sewer. The City shall assume no obligation or responsibility
for damage caused by or resulting from any single building sewer which
serves two buildings.
Existing building sewers may be used in connection
with new buildings only when they are found, on examination and test
as defined by the Director, to meet all requirements of this chapter.
The size, slope, alignment, materials of construction
of a building sewer and the methods to be used in excavating, placing
of the pipe, jointing, testing and backfilling the trench shall all
conform to the requirements of the building and plumbing code provisions
and other laws, rules and regulations applicable in the City and any
applicable New York State Code. In the absence of code provisions
or in amplification thereof, the materials and procedures set forth
in appropriate specifications of the ASTM and WPCF shall apply.