(A) 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 that may directly or indirectly be occasioned by the installation of the building sewer.
(B) All excavations for building sewer installation shall be adequately guarded with barricades and light so as to protect the public from hazard. Where applicable, all construction activities for building sewers shall conform to rules and regulations promulgated under occupational safety and health acts of the federal and state governments. Streets, sidewalks, parkways and other public property disturbed in the course of the work shall be restored in a manner satisfactory to the city.
(C) The building sewer shall be connected to the public sewer at an existing wye, tee, stub, or riser location as provided in the building sewer permit. Such connection, location, depth, or other information given by the city utilities shall serve only as a guide, however, and no guarantee of accuracy is made by the city utilities. Connection to a public sewer where there is no existing wye, tee, stub, or riser, or where such inlet location cannot be found, shall be made by one of the methods listed below. If another method is desired, a detail shall be submitted for review and approval by the city utilities before the connection is made. Indiscriminate breaking of the sewer shall not be allowed. The invert of the building sewer at the point of connection shall be at the same or at a higher elevation than the invert of the public sewer. All parts of the connection shall be made secure and watertight.
(1) Installation of a manhole.
(2) Circular saw cut of a sewer main by the proper tools, and proper installation of a hub wye saddle or hub tee saddle, in accordance with manufacture's recommendations. These saddles shall be of the same material as the public sewer on which they are installed.
(3) Removal of an entire section of pipe and replacement with a wye, or tee branch section. Pipe section shall be removed by breaking the top of only one bell. After the wye or tee branch is inserted, a watertight structural bonding adhesive shall be placed over the broken area to minimum thickness of four inches and to a minimum dimension of four inches beyond the break line in all directions. New pipe section inserted shall be of the same material as the existing public sewer.
(4) Use of a pipe cutter to neatly and accurately cut out desired length of pipe for insertion of proper fitting. Use "Band Seal" couplings, or similar couplings, and shear rings and clamps to fasten the inserted fitting and hold it firmly in place. Couplings shall be approved by the city utilities in writing before their use is allowed. Manufacturer's recommendation for the installation shall be followed.
(D) Building sewers shall meet all requirements of the following specifications. Building sewers shall be cast iron soil pipe, ductile iron pipe, reinforced concrete pipe, vitrified clay pipe, ABS composite pipe, or PVC plastic sewer pipe as specified below. No other material or installation procedure shall be acceptable unless written authorization is granted by the city utilities.
(1) Ductile iron pipe shall conform to the requirements of ANSI A21.51 (AWWA C151) ductile iron pipe, centriftigally cast in metal molds or sand line molds for water and other liquids. Thickness class requirements of ductile iron pipe to be used in conveyance of sanitary sewerage by gravity shall be determined by methods specified in ANSI A21.50 (AWWAC151), revision of A21.50 (AWWAH3). One hundred fifty psi working pressure and laying conditions Type 1, as defined in the above referenced specifications, shall be considered as design values. Ductile iron pipe, 12 inches in diameter and larger shall be lined with a virgin polyethylene material complying with ASTM D1248. Pipe shall be tar coated outside. Joints on ductile iron pipe shall be push-on type conforming to ANSI A21.51 (AWWAC151). Fittings shall be cast iron and shall comply with ANSI A21.10 with push-on or mechanical joints for 150 psi working pressure.
(2) Reinforced concrete pipe shall conform to the requirements of ASTM C76; circumferential reinforcing in circular pipe shall be required. No elliptical reinforcing or combination of elliptical and circumferential reinforcing shall be permitted in circular pipe. All reinforced concrete pipe, unless specifically designated otherwise, shall be Class IV, Wall B. Concrete pipe shall be steam cured, and shall not be shipped from point of manufacture for at least five days after having been cast. Lift holes will not be permitted in reinforced concrete pipe. Joints for reinforced concrete pipe shall consist of a round rubber gasket conforming to section 6.1.6, 6.1.7, and 9 of ASTM Designation C443. The gasket shall be confined in a groove in the spigot of the pipe and shall be the sole element depended upon to make the joint flexible and watertight. Joints may utilize steel joint rings, steel bells, and concrete spigots, or be formed entirely of concrete. Concrete and rubber joints shall conform to ASTM C443. Pipe employing collars in lieu of integral bells will not be accepted. Steel and rubber joints shall conform to ASTM C443. Pipe shall be equipped with rubber and integrally cast steel joints having steel bells, steel spigots, and O-ring rubber gaskets. All surfaces of steel joint rings exposed in the finished pipe after manufacture shall be protected from corrosion by means of a coating of metallic zinc, not less than 0.002-inch thickness, applied by metalizing process.
(3) Vitrified clay pipe shall conform to the requirements of ASTM C700. Joints of vitrified clay pipe shall be compression type joint conforming to ASTM C425. Installation of vitrified clay pipe shall be in accordance with ASTM C12 except that no backfill shall be placed until the work has been inspected. Bedding shall be a minimum of Class "C" on private property and a minimum of Class "B" under public right-of-way or private access roads. Higher classes of bedding shall be placed when requested by the city utilities.
(4) PVC plastic pipe shall conform to the requirements of ASTM D1784 and either ASTM D3033-SDR 35 or ASTM D304-SDR 35. Pipe and fitting markings shall include the appropriate ASTM designations and all classification numbers. Pipe and fittings not marked will be rejected. Unless otherwise approved by the city utilities, plastic joints shall be elastomeric gasket bell and spigot type as referenced in ASTM D3033 and ASTM D3034 and meeting the requirements of ASTM D3212. Joints shall be assembled in accordance with the pipe manufacturer's recommendations. All fittings shall be factory fabricated. PVC plastic pipe shall be installed in full compliance with ASTM D2321, using no less than Class III embedment materials as defined in that specification. Pipe shall be uniformly supported for its entire length, and the materials surrounding the pipe shall be compacted to the required "standard proctor densities" outlined in ASTM D2321. The area requiring compaction shall include the bed and side fill material and also the material placed above the pipe for a distance of six to twelve inches over the top of the pipe. No crooked pipe shall be used. Allowable pipe deflection shall in no case exceed 5% of the normal vertical diameter. Any locations which exceed 5% deflection shall be excavated and the affected pipes replaced. In addition, allowable pipe deflection shall not exceed 3% of the nominal vertical diameter in over 20% of any sewer section. In any section which exceeds 3% deflection in over 20% of its length, the entire section shall be excavated and replaced. Deflection testing shall be done as soon as the installation is complete, backfilling has been completed, and prior to fine surface restoration. This deflection testing may be waived by the city utilities. Water stops as supplied by the pipe manufacturer shall be installed where any pipe passes through a manhole wall.
(5) ABS composite pipe shall conform to the requirements of ASTM D2680. Joints shall he solvent cemented providing a watertight seal. Joints shall be assembled in accordance with the pipe manufacturer's recommendations. The ends of each pipe shall be sealed watertight in accordance with the pipe manufacturer's recommendations. All fittings shall be factory fabricated. ABS pipe which is in sizes six-inch or smaller shall be extra heavy solid wall in conformance with the requirements of ASTM D2751. ABS pipe shall be installed in full compliance with ASTM D2321, using no less than Class III embedment materials as defined in that specification. Pipe shall be uniformly supported for the entire length, and the materials surrounding the pipe shall be compacted to the required standard proctor densities outlined in ASTM D2321. The area requiring compaction shall include the bed and side fill material and also the material above the pipe for a distance on six to 12 inches over the top of the pipe. No crooked pipe shall be used. Allowable pipe deflection shall in no case exceed 5% of the normal vertical diameter. Any locations which exceed 5% deflection shall be excavated and the affected pipes replaced. In addition, allowable pipe deflection shall not exceed 3% of the nominal vertical diameter in over 20% of any sewer section. In any section which exceeds 3% deflection in over 20% of its length, the entire section shall be excavated and replaced. Deflection testing shall be done as soon as the installation is complete, backfilling has been completed, and prior to fine surface restoration. This deflection testing may be waived by the city utilities. Water stops as supplied by the pipe manufacturer shall be installed where any pipe passes through a manhole wall. Joints shall be assembled in accordance with the pipe manufacturer's recommendations. Cast iron soil pipe shall conform to the requirements of ASTM A74. Joints shall be compression or "No Hub" type. Pipe shall be uniformly supported for its entire length, and the pipe shall be installed in accordance with the recommendations of the Cast Iron Soil Pipe Institute.
(E) The size and the slope of the building sewer shall be subject to the approval of the city utilities, but in no event shall the diameter be less than four inches. Where pipes of different sizes are to be joined, such as four inch cast iron to six inch clay, a reducer coupling shall be used equal to "Clow mission" couplings, ASTM C-594. Concrete or other types of sealing will not be acceptable. All pipes must be joined in accordance with the manufacturer's recommendations so that no storm water shall infiltrate into the sanitary sewer. Where pipes of different materials are joined, a "band seal" adapter as manufactured by the Clow Corporation or equal shall be used. A gasket shall be provided, when necessary, so the adapter can be tightened around both pipes to make a watertight seal. Manufacturer's recommendations for the installation shall be followed.
(F) Building sewers shall have a minimum cover of not less than 36 inches in private property and 48 inches in public right-of-way or private access roads. Approved slopes for six-inch sewers shall not be less than nine inches per 100 feet and 12 inches per 100 feet for four-inch building sewers. Except for the riser pipe connections in mobile home parks, the maximum slope shall not be more than twelve inches per foot.
(G) Building sewers for privately owned mobile home parks shall terminate on the mobile home site with a vertical riser pipe centered within a steel sleeve, both of which shall extend not less than six inches above the ground. The steel sleeve shall be set in a concrete base. The riser pipe within the steel sleeve shall be capped and sealed at the tune of construction, and shall be kept sealed at all times that it is not connected directly to the discharge piping of the mobile home or trailer.
(H) Manholes or lampholes used for clean-out purposes on private building sewers shall have bolted lids and shall conform to the general practice for this type of installation. Lampholes or other similar clean-out points shall have a cast iron casting set in concrete with a cast iron bolted lid equal to Neenah No. R-1974 or No. R6461 AL.
(I) From the effective date of this subchapter, downspouts, open drains, footing tile, septic tanks, or cesspools shall not be connected to the building sewer which is not presently connected; nor is any other source of storm water permitted into the sanitary sewers. Septic tanks or cesspools should be drained and filled with granular materials. Storm water drains shall be connected to a storm sewer if possible, or otherwise designed to drain onto the surface of the property or street.
(J) Building sewers subject to flooding or ponding conditions shall be provided with drain plugs or valves to protect the building sewers and the property owner's building during heavy rain or high water periods. These backflowage devices shall be designed to prevent wastewater or stormwater from backflowing into said building sewers and buildings. The drain plugs or valves proposed for installation shall require the approval of the city utilities. Exposed drain lines shall be protected from freezing as directed by the city utilities.
(K) All joints and connections shall be made gastight and watertight. All fittings shall be factory fabricated.
(L) Building sewers to service new structures, but not including mobile home parks, shall be constructed as follows:
(1) The sewer pipe shall terminate at a point not closer than five feet from the outside of the structure. A connection shall be made at this point with an eight foot minimum length piece of cast iron soil pipe, or other materials as approved by the Administrative Building Council of the state, five feet of which shall extend outside the inner face of the building wall or footing. The remaining three feet or more shall extend inside the braiding and shall be stopped with a blind plug installed in place before the pipe is laid in the ground. Under no conditions shall this plug be removed until the house, building, or structure is under roof and the interior plumbing is to be connected to the various approved fixtures in the building.
(2) All excavations required for installation of a building sewer shall be open trench work unless otherwise approved by the city utilities.
(M) 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 of another or an interior lot and no private sewer is available or can be constructed to the rear building through an adjoining alley, courtyard, or driveway, and the building sewer from the front of the building may be extended to the rear building and the whole considered as one building sewer. Mobile home parks may be permitted to use a joint building sewer, where a certain number of units may be connected to the privately owned building sewer as approved by the city utilities. Each structure including each mobile home unit facility shall pay an individual permit fee as specified in this subchapter (see § 51.027), and in no case where more than one structure is connected to the building sewer shall the size be less than six inches in diameter.
(N) Old building sewers may be used in connection with new buildings only when they are found on examination and test by the city utilities to meet requirements of this subchapter.
(O) In all buildings in which any building drain is too low to permit gravity flow to the public sanitary sewer sanitary sewage carried by such drain shall be lifted by approved artificial means and discharged to the building sewer.
(Q) Existing water lines, gas lines, other utilities, other pipes, or drain pipes shall not be relocated without permission of the city utilities. Any deviation from the proper line or grade of the building to avoid existing underground installations shall require the approval of the city utilities.
(R) The inspection division of the city Sewer Department shall be notified when the building sewer construction for each installation is to begin. Both the connection to the public sewer and the pipe joint at the building outlet shall be made under supervision of the city utilities and shall be inspected before backfilling.
(Ord. 6386, passed 3-20-17)