Chapter 13.24 SIDE SEWER CONSTRUCTION

All side sewers shall be laid on a grade one-quarter inch per foot for four-inch pipe and one-eighth inch per foot for six-inch pipe or greater. (Ord. 699 § 6.01, 1972)

13.24.020 Available grade determination.

The applicant for permit shall be responsible for deter mining the available grade between building drain and sewer tee or stub. (Ord. 699 § 6.02, 1972)

13.24.030 Gravity flow unavailable.

In any case where the house or building drain is too low to permit gravity flow to the public sewer, the same shall be lifted by artificial means and discharged into the public sewer. (Ord. 699 § 6.03, 1972)

13.24.040 Grades—Waiver—Requirements.

The requirements of Section 13.24.010 maybe waived by the superintendent in his discretion, but in such cases the following requirements will be adhered to:

(1) Upon approval by the superintendent, a backwater valve shall be installed on all side sewers below grade as above prescribed unless the superintendent waives this requirement;

(2) The effective operation of any backwater valve shall be the responsibility of the owner of the side sewer;

(3) No installation of any side sewer below grade as above prescribed nor any installation of any backwater valve shall be approved by the superintendent until the application has been executed and a grade release in form prescribed by the superintendent agreeing to save the city harmless from all damage resulting therefrom, together with the fee to cover the costs of recording same, have been delivered to the city clerk. (Ord. 699 § 6.04, 1972)

13.24.050 Layout.

Side sewers shall be laid out not less than thirty inches from any foundation wall, outer lines of any footings, pilings or building supports. (Ord. 699 § 6.05, 1972)

13.24.060 Cover.

Except as provided in Section 13.28.050, minimum cover for side sewers shall be three and one-half feet in outside parking strip, two feet in inside parking strip, two and one-half feet in a public alley at the property, two and one-half feet where side sewer crosses under a ditch, and eighteen inches on private property. (Ord. 699 § 6.06, 1972)

13.24.070 Connection location.

All connections shall be made to the location assigned at the time the permit is issued, and no side sewer be longing to another owner shall be used unless written permission for such use accompanies the side sewer application. (Ord. 699 § 6.07, 1972)

13.24.080 Multiple connections-Easement required.

If a side sewer is to serve more than one property, by joint agreement of the owners, an approved document insuring that all properties involved shall have perpetual use of the side sewer, and having provisions for maintenance and for access for repair purposes, shall be signed by the recorded owner. This document shall be notarized and recorded with the county auditor and shall be referred to as an “easement.” (Ord. 699 § 6.08, 1972)

13.24.090 Multiple connections-pipe and cleanout.

If a side sewer is to serve two or more, limited to a maximum number of six houses, the use of six-inch pipe shall be specified. A six-inch cleanout extending to within twelve inches of the ground surface will be required at the wye where the upper grade connections are made. (Ord. 699 § 6.09, 1972)

13.24.100 Multiple connections-Plans by engineer.

If more than six buildings are to be connected to a single side sewer, the clerk may required plans prepared by a registered professional engineer to be submitted to the city for approval, showing the size of pipe and grade proposed. Upon approval of these plans by the city council, the clerk may issue the permit. (Ord. 699 § 6.10, 1972)

13.24.110 Pipe size.

Except as provided in Section 13.28.040, all side sewers servicing a single house may be of four-inch pipe or large. All side sewers servicing multiple dwellings, commercial establishments, schools, or any building other than single dwelling residences shall be of six-inch pipe or larger. (Ord. 699 § 6.11, 1972)

13.24.120 Connection around private sewage disposal facilities.

Any connections to a septic tank, cesspool, or privy vault shall be removed and direct connection made to the house or building drain; provided, however, that connection may be made through existing septic tanks or cesspools, but in such event cast iron pipe shall be used through such cesspool or septic tank. In all cases, such cesspool or septic tank shall be properly disinfected and filled with suitable material. (Ord. 699 § 6.12, 1972)

13.24.130 Use of existing side sewer.

The use of any existing side sewer may be permitted by the superintendent if it conforms to all requirements of this title in cases where a new or converted building or new installation replaces an old one. Testing of the sewer may be required. (Ord. 699 § 6.13, 1972)

13.24.140 Connection to approved sewer required.

No side sewer connection shall be made to the public sewer until that section of sewer main has been approved by the city for side sewer connections. (Ord. 699 § 6.14, 1972)

13.24.150 Main-Damage.

The side sewer contractor or other persons doing the work shall prevent any damage to the sewer main, tee or stub out, and shall so conduct his trenching operations as to prevent the possibility of damage occurring. Under cutting of sewer main and wye is prohibited. (Ord. 699 § 6.15, 1972)

13.24.160 Main-Tapping.

In the event there is no suitable tee or stub out, a tap to the main may be made by a licensed side sewer con tractor, under the direct supervision of the superintendent. The tap shall be made with the approved rubber joint saddle on all types of sewer main. Grouting in a tee or wye is not permitted. Great care shall be taken in cutting a neat hole into the sewer main, and in the event of breakage of the sewer main, the broken section shall be removed and replaced at no cost to the city. (Ord. 699 § 6.16, 1972)

13.24.170 Pipe bedding.

The bottom of the trench shall be smooth and free of large rocks. A four inch depth of pipe bedding material shall be placed in the trench before the pipe is installed. Bedding material may consist of coarse sand, well graded pea gravel three-eighths inch minus, clean, select pit run granular material one-half inch minus approved by the superintendent, or suitable granular excavation from the trench which has been approved by the superintendent. (Ord. 699 § 6.17, 1972)

13.24.180 Soft foundation-Overexcavation.

Where soft foundation material is encountered, overexcavation as directed by the superintendent may be required and the installation of one and one-half inch minus washed rock before placing pipe bedding as direct ed under Section 13.24.170. (Ord. 699 § 6.18, 1972)

13.24.190 Unauthorized overexcavation Filling.

Any unauthorized overexcavation below the pipe grade shall be filled with the bedding material and compacted. (Ord. 699 § 6.19, 1972)

13.24.200 Connection to tee or stub out.

The side sewer contractor or other persons doing the work shall carefully remove the plug from the tee or stub out and shall prevent the entrance of all foreign material into the pipe. The type of joint to be used for connecting the side sewer pipe to the tee or stub out shall be that for which the wye was designed. Rubber or plastic joint adapters shall be used as required to connect pipes and wyes of different materials or joint designs. Selected bedding material as outlined in Section 13.24.170 shall be hand-tamped in a moist condition under and around the wye and connection to the wye so as to prevent any pressure on the wye. Care shall be taken to prevent the dislodging of this hand-tamped material during the balance of the backfill and water settling operation. All sewers shall be laid true to grade with the bells upgrade. Pipe shall be firmly bedded for the full length of the barrel in the prepared trench bottom. Pipe shall be care fully centered prior to the joining. Joints shall be installed in strict compliance with the manufacturer’s recommendations. Spigot ends shall be thoroughly cleaned before applying gasket cement and rubber gaskets. The interior surface of the bell previously laid shall be thoroughly cleansed and coated with gasket cement or lubricant as recommended by the manufacturer. After the section being laid has been carefully aligned, the joint shall be completed. (Ord. 699 § 6.20, 1972)

13.24.210 Tee required at property line.

On all side sewers, the first length of pipe inside the property line shall be the same size as the service line between house and property line. After testing the side sewer as outlined in Chapter 13.32, the tee shall be capped. To facilitate location of the tee for future use, a two foot by four foot center stake shall be set vertically in the trench beside the tee with the top cut off one foot below the finished ground surface. (Ord. 699 § 6.21, 1972)

13.24.220 Connection at building.

The connection to the cast iron pipe at the building shall be suitable rubber gasket sleeve or adaptor. Grout joints will not be allowed. In exceptional cases, the superintendent may allow a connection using a hot pour jointing material JC-60 or approved equal. (Ord. 699 § 6.22, 1972)

13.24.230 Backfilling trench.

Backfill of the trench shall be done in a manner which will prevent damage to the pipe. All backfill between the sewer main and private property line, where applicable, shall be water settled or mechanically tamped in a manner approved by the superintendent. (Ord. 699 § 6.23, 1972)

13.24.240 Water and sewer proximity.

Parallel water and sewer lines, wherever possible, shall be laid at least ten feet apart horizontally. Wherever it is necessary for sewer and water lines to cross each other, the crossing shall be made at an angle of approximately ninety degrees, and the sewer shall be located three or more feet below the water line if possible. (Ord. 699 § 6.24, 1972)

13.24.250 Variance from requirements Special permit.

Where physical conditions render compliance with the foregoing provisions of this chapter impracticable, the city clerk may issue a special permit for installation of a side sewer requiring compliance with said provisions insofar as is reasonably possible, but such permit shall be issued only upon condition that the permittee execute and deliver to the city an instrument, in form furnished by the superintendent, agreeing to save harmless and indemnify the city from any damage or injury resulting from such substandard installation, together with fee to cover the cost of recording. (Ord. 699 § 6.25, 1972)

13.24.260 Point of connection.

The point of connection to the city’s sewer line of any side sewer serving any multiple family dwelling shall be as directed by the city council. (Ord. 699 § 6.26, 1972)