No person shall uncover, make any connection with or opening
into or use, alter, disturb or discharge into any public sewer or
appurtenance thereof without first obtaining a written permit therefor.
A separate and independent building sewer shall be provided
for every building, except that, 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 from the front building
may be extended to the rear building and the whole considered as one
building sewer.
Old building sewers may be used in connection with new buildings
only when they are found, on examination and test by the Superintendent,
to meet all requirements of this Part 2.
The building sewer shall be cast-iron soil pipe, ASTM Specification
A74-42 or equal; vitrified clay sewer pipe, ASTM Specification C13-44T
or equal; or other suitable material approved by the Superintendent.
Joints shall be tight and waterproof. Any part of the building sewer
that is located within 10 feet of a water-service pipe shall be constructed
of cast-iron soil pipe with leaded joints or other suitable material
approved by the Superintendent. Cast-iron pipe with leaded joints
may be required by the Superintendent where the building sewer is
exposed to damage by tree roots. If installed in filled or unstable
ground, the building sewer shall be of cast-iron soil pipe, except
that nonmetallic material may be accepted if laid on a suitable concrete
bed or cradle, as approved by the Superintendent.
[Amended 2-17-1987]
The size and slope of the building sewer shall be subject to
the approval of the Superintendent, but in no event shall the diameter
be less than four inches. The slope of such four-inch pipe shall be
not less than 1/8 inch per foot.
All excavations required for the installation of a building
sewer shall be open trench work unless otherwise approved by the Superintendent.
Pipe laying and backfill shall be performed in accordance with ASTM
Specification C12-19, except that no backfill shall be placed until
the work has been inspected.
The applicant for the connection of any building sewer to the
city's sewerage system shall notify the Superintendent when the building
sewer is ready for inspection and connection to the public sewer.
In no case shall any underground portions of the building sewer be
covered or connection to the public sewer made without the approval
and/or supervision of the Superintendent or his representative. Permission
to activate the building sewer will be given only after satisfactory
final inspection has been made and approval given by the Superintendent,
and connection shall be made under the supervision of the Superintendent
or his representative.
All excavations for building sewers shall comply with all federal,
state and local safety regulations and shall be adequately guarded
with barricades and lights so as to protect the public from hazard.
Streets, sidewalks and other public property disturbed in the
course of the work shall be restored in a manner satisfactory to the
city.
Before any building whose building sewer is connected to a public
sewer is demolished, the owner thereof shall conform to the requirements
established by the Superintendent. The cutoff or plugging of the building
sewer shall be done with the permission and under the supervision
of the Superintendent.