The following requirements shall apply to existing
house connection sewers:
A. If the construction of a new house connection sewer
on a lot is to include any portion of an existing house connection
sewer on such lot, such construction shall be included and accepted
only when it meets all the requirements for new house connection sewers
and is of a material acceptable to the Engineer and Building Inspector.
B. When it is found necessary to replace any portion
of an existing house connection sewer between the street curb and
lot line, all that portion of the house connection sewer between these
limits shall be replaced to meet the requirements for new house connection
sewers.
C. When it is found necessary to replace any portion
of an existing house connection sewer between the curb and public
sewer, all that portion of the house connection sewer between these
limits shall be replaced to meet the requirements for new house connection
sewers.
All house connection sewers shall be laid by
the most direct route feasible, free of pinched joints, changes of
grade or unnecessary bends or fittings.
All excavations shall have sufficient width
to allow proper workmanship and permit adequate inspection and shall
be supported in proper manner. Sheetpiling and other timbers shall
be withdrawn in such a manner as to prevent caving of the walls of
the excavation or disturbance of the sewer pipe.
At any point in a main sewer or trunk line sewer
where it is necessary to provide new sewerage service, no vitrified
clay Y or T saddle will be permitted. Entrance into the main sewer
or trunk sewer will be constructed in the following manner:
A. By first cutting the entrance to the main sewer or
trunk sewer and then inserting a short piece of four-inch- or six-inch-diameter
cast-iron pipe, with bell on one end, into the aforedescribed entrance
in such a manner as not to protrude beyond the inside face of said
trunk or main sewer. The connecting pipe shall be so placed as to
project upward at an angle of approximately 45° from the horizontal
and, in addition, shall be so placed as to direct the flow of the
house connection sewage downstream into the main or trunk sewer. The
only method by which a connection shall be made into the top of the
main or trunk sewer is if said connection is constructed in accordance
with the Standard Plan entitled "Standard Chimney Pipe" and in accordance
with the aforementioned connection method. It is hereby further provided
that all Y connections or saddles shall conform to the Standard Plan
entitled "Standard Saddle Connection."
B. After the short section of connecting pipe is in place,
an embedment of cement concrete shall be placed under and around the
main line sewer pipe and connecting pipe as required for a standard
chimney pipe in accordance with the Standard Plan. The inside of the
main or trunk sewer shall be checked to see that there is no protruding
cement at the joint between pipe and saddle.
No person shall connect or cause to be connected
any sewer which has been or may hereafter be constructed in any street,
highway, alley, right-of-way or other public place prior to the dedication
and acceptance of such street, alley or right-of-way with any public
sewer of the City, unless such sewer first mentioned shall have been
laid under the supervision and/or to the satisfaction of the Engineer
and in accordance with all provisions of this chapter.
No person shall connect or cause to be connected
any cesspool or septic tank to any public sewer or to any house connection
sewer leading thereto.
Upon connection of a house connection sewer
to the public sewer, every septic tank, cesspool, seepage hole or
dry well and every dry pit privy hole which has been abandoned and
discontinued from use shall be backfilled solidly with earth to the
satisfaction of the Building Inspector or Engineer.
[Amended 12-27-2011]
The installation of backwater valves to prevent
sewage backflow shall comply with the State Plumbing Code.
Every interceptor shall be of proper design
and of an adequate size to prevent sand, silt, grit, mineral material,
petroleum solvent, grease or oil from entering the sewer. The size
and design shall be as approved by the Building Inspector and Engineer.
Every interceptor shall be so constructed and
arranged that flowing wastes will not wash out or carry away any of
the grease, sand or petroleum solvents previously collected in such
interceptor. The Engineer may require screens to be placed in interceptors
to prevent rags from entering the public sewer.
Existing interceptors which are found, upon inspection, to be of inadequate size or of improper design shall be revised as directed by the Engineer within 30 days after notice upon penalty of immediate disconnection from the sewer and fine as provided in §
462-55. Notice of inadequate interception facilities shall be given by registered mail and shall be deemed effective as of the fifth day after receipt of said notice.
In the event a special type of interceptor is
required to adequately protect the sewer, a competent engineer shall
be retained to fully investigate the processes at the plant and provide
adequate facilities for the retention of undesirable wastes by interceptors
or other suitable means. The proposed design shall be submitted to
the Engineer for his approval prior to installation and connection
to the sewer.
The Engineer may adopt, in writing, such test
requirements as he finds necessary to determine the collecting efficiency
of various types and kinds of interceptors and to establish the rate
of flow, grease or sand retention capacity or other rating thereof.
The Engineer may revise from time to time, as he finds necessary,
such test requirements.
All industrial liquid waste pretreatment plants,
grease interceptors, sand interceptors, sewage treatment plants, sewage
pumping plants or ejectors, septic tanks, cesspools, dry wells, dilution
chambers and neutralization tanks shall be constructed in accordance
with the Plumbing Code unless otherwise provided in this chapter.