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, and other pertinent factors:
(a) The new building sewer shall be constructed of a size not less than six inches, nominal diameter, and shall be of suitable material to comply with specifications under the Ohio Plumbing Code and approved by the Safety-Service Director. In the absence of Code provisions or in amplification thereof, the materials and procedures set forth in appropriate specifications of the A.S.T.M. and W.P.C.F. Manual of Practice No. 9 shall apply.
(b) The building sewer shall be laid at uniform grade and in straight alignment insofar as possible. A cleanout shall be provided in locations where change in direction is greater than thirty degrees; if change of direction is thirty degrees or less, curved pipe may be used.
(c) All joints and connections shall be made gas tight and water tight. Joints used in vitrified pipe shall be compression type A. S.T.M. C425.
(d) The building sewer shall have a minimum fall of one-fourth inch per lineal foot from the building to the public sewer and shall be a minimum of two feet in elevation above the crown of the public sewer at the point of sewer connection. The Safety-Service Director may, by special permission in each case, authorize the building sewer to be constructed with a fall as little as one-eighth inch per lineal foot if he determines such procedure to be desirable.
(e) The interior of each length of pipe shall be made perfectly clean and free from off-sets, fins, and projections before the next length is connected thereto. All building sewers shall be graded by line and pole, the line being first leveled from the building to the public sewer and then lowered at the public sewer end to obtain the required fall.
(f) Building sewers shall not be constructed closer than three feet to any exterior wall, cellar, basement or cistern or the depth shall be sufficient to afford protection from frost.
(g) All excavation required for the installation of a building sewer shall be open trench conforming to the Standard Connection Trench Detail attached to original Ordinance 11-70, passed April 13, 1970.
(h) Water, gas service and building storm sewers, shall not be laid in the same trench as the building sanitary sewer.
(i) The building sewer shall be backfilled to an elevation of at least twelve inches over the top of the pipe by tamping in six inch layers. Soil containing stones larger than three inches in the greatest dimension shall not be used for this portion of the backfill. The balance of the backfill may be deposited in any manner which will not damage the pipe or disturb the alignment or grade of the sewer, except that the balance of the backfilling shall be done and with such materials as may be required by the permit referred to in Section 925.14(a).
(j) House sewer connections shall be connected to the main sewer, constructed by the City, by either the wye (Type 1), or by a saddle (Type 2).
Type 1. No connection shall be allowed to any damaged tee branch. If damage occurs during the making of the connection, the tee branch shall be taken out of the main sewer by the contractor and replaced either by another undamaged tee branch or by straight vitrified clay pipe. If straight pipe is used in replacement, a saddle as described in Type 2 shall be installed.
Type 2. Connections of this type shall be made in a smooth, round hole, machine-drilled into the main sewer pipe. The fitting used in the connection shall be made in such a manner as to insure that no protrusions of the fitting into the main sewer pipe shall result. The connector shall fit the contour of the inside of the sanitary sewer and shall be designed to fit the particular size main sewer pipe into which the connection is made.
The machine drilled hole shall be of a size to provide a minimum of clearance between the outside of the fitting and the hole. The saddle shall be securely attached to the pipe with an approved joint material.
(k) The person to whom a permit is issued shall be responsible for obtaining any required permits to open cut any street, road or alley, from the appropriate political body or official having authority or jurisdiction over such work. He shall enclose each opening which he may make in the public streets, roads or alleys with sufficient barriers and shall maintain red lights at night, take all necessary precautions to guard the public effectually against all accidents from the beginning of the work.
(l) The permit holder will be required to repair or restore any drains or service lines damaged or disturbed by him during the construction of the building sewer.
(m) All connections passing under the sidewalks shall be tunneled or the sidewalk replaced on compacted fill tamped in six inch layers.
(n) All other construction incidental to the installation of the sanitary sewer connection shall be in accordance with the standard specifications used by the City for main sewer construction.
(o) A six inch test “T” shall be installed at the property line and raised to within four inches of the existing grade for inspection and clean-out purposes. A plastic stopper shall be installed on the riser, and a cast iron plate shall be placed in the stopper.
(p) No sewer pipe for a water closet or any other connection shall be allowed inside any house or building unless proper means are provided for the ventilating of such pipe or sewer so as to effectually prevent sewer gas from entering the house or building.
(q) Refer to the Standard Details for Trench, Pavement Replacement, Test Tee and Cleanout attached to original Ordinance 11-70, passed April 13, 1970.
(r) The standard water or air test for connections shall be as follows:
(1) Water: The loss of water under a three foot head of water shall be less than 0.0142 gallons per lineal foot of sewer per hour.
(2) Air. The loss of one pound per square inch of air pressure shall not occur in less than three minutes when the initial pressure is between four pounds per square inch and three and one-half pounds per square inch.