CHAPTER 4
SEWER LINE CONSTRUCTION SPECIFICATIONS
SEWER LINE CONSTRUCTION SPECIFICATIONS
SECTION:
9-4-1: Compliance With Regulations
9-4-2: Plan And Construction Requirements; State Approval
9-4-3: Materials Required
9-4-4: Method Of Construction
9-4-5: Special Conditions, Water Line Near Sewer Line
9-4-6: Application To Public Sewer Lines Only
9-4-7: Violations; Penalties
Any person desiring to construct a sanitary sewer within the corporate limits of the city, which sewer will be turned over to the city for operation and maintenance upon completion, shall be required to construct said sewer in accordance with the specifications set forth in this chapter. (Ord. 14.08)
A. Plan Required; Specifications:
1. Before any sewer line is installed in the city, a plan and profile of the proposed installation shall be submitted to the city council for their consideration.
2. The plan and profile shall show location of the sewer and area being served, location of all wyes, location and distances between manholes, elevation of the invert of the sewer at all points where grade changes, elevation of tops of all manholes, slopes of the sewer, and all tiles into the present system.
B. Plan Submitted To State; Approval Required: The plan and profile shall be complete enough so that it can be submitted to the state public health and human services department for their approval prior to construction. In no case will construction be started until written approval of the installation is received from the city council. (Ord. 14.08; amd. 2006 Code)
C. Supervision; Inspection:
1. Any sewer installation made in the city shall be under the supervision of the engineer representing the city or the city superintendent. The engineer representing the city or the city superintendent shall approve the layout of the work and be responsible to see that the sewer is being laid to grades specified on the plans.
2. It shall be required to have an inspector or the city superintendent during the actual construction of the work. The inspector or the city superintendent shall be an employee of the engineer representing the city or an employee of the city. The inspector or the city superintendent shall be authorized to inspect all work done and all materials furnished. Such inspection may extend to all or any part of the work and to the preparation, fabrication or manufacturer of the materials to be used. The inspector or the city superintendent will not be authorized to revoke, alter or waive any requirements of the specifications, however, he is authorized to call attention to any failure of the work or materials to conform to these specifications. He shall have the authority to reject materials or suspend the work until any question at issue can be referred to and decided by the engineer or city superintendent. The costs of employing the inspector and engineer or city superintendent shall be borne by the person making said improvement. (Ord. 14.08; amd. Ord. 2.32)
D. As Constructed Drawings: After the sewer has been completed and before acceptance by the city council, there shall be "as constructed drawings" submitted to the city council. These drawings shall be prepared on regular plate A 4 x 20 plan and profile paper and shall be prepared in India ink to serve as a permanent record for the city. These final drawings shall show the final grade and alignment of the sewer as constructed, the final location of all manholes in relation to property lines or street intersections and the actual location of all wyes shall be wyes shown by a dimension from the closest manhole up grade from the Y.
E. Minimum Requirements: Any sewer installed in the city shall meet the following minimum requirements: (Ord. 14.08)
1. The size of the sewer to be installed shall be determined by the engineer representing the city or the city superintendent. In no case will a sewer having a diameter less than eight inches (8") be allowed to be installed. (Ord. 14.08; amd. Ord. 2.32)
2. The minimum slope shall be controlled by the flow of the sewer in feet per second. In no case will a flow of less than two feet (2') per second be approved.
3. Manholes shall be provided at all changes in grade and changes in direction. (Ord. 14.08)
A. Pipe: Any sewer pipe, junctions, bends, etc., installed in the city shall conform to "Specifications For Standard Strength Clay Sewer Pipe" ASTM designation C13-54 and revisions thereto. When, in the opinion of the engineer representing the city or the city superintendent, it is necessary to install extra strength clay sewer pipe, all pipe, junctions, bends, etc., shall conform to "Tentative Specifications For Extra Strength Clay Sewer Pipe" ASTM designation C200-55T and revisions thereto. (Ord. 14.08; amd. Ord. 2.32)
B. Jointing Compound: The jointing material shall be a hot poured mineral filled asphaltic base compound meeting federal specifications SS-S169, type I. In no case will cement mortar or cold application bituminous jointing compound be allowed.
C. Joint Primer: When primer is required, the primer furnished shall be of the type recommended by the manufacturer of the sewer joint compound being used on the particular job.
D. Jute: Jute furnished shall be dry, twisted, unoiled and of sufficient diameter and thickness so that the spigot can be properly centered in the bell of the proceeding pipe.
E. Manholes:
1. The manholes installed on any sewer project in the city shall be precast concrete manholes. All manholes shall have a minimum bottom interior diameter of four feet (4'). When a manhole is four feet (4') or more in depth, the conventional cone type manhole may be furnished. When a manhole is four feet (4') or less in depth, a vertical walled manhole having an interior diameter of four feet (4') shall be furnished. The wall thickness on all manholes furnished shall be at least eight inches (8") in width and made of three-fourths inch (3/4") diameter bar stock. The rungs shall be securely fastened to the concrete sidewalls and spaced sixteen inches (16") apart.
2. Every manhole shall be provided with a cast iron ring and solid cover of a standard type, weighing approximately three hundred twenty five (325) pounds each.
F. Cement Mortar: All cement mortar used in setting the manholes shall be composed of equal parts of cement and clean, sharp sand free from admixture with other foreign substances. Enough pure water shall be added to make a stiff paste.
G. Concrete:
1. Cement used in the concrete shall conform to the requirements of ASHO designation M85, type II. Coarse aggregate shall consist of crushed stone, or gravel ranging in size from coarse to fine from one hundred percent (100%) passing the one inch (1") sieve to a maximum of five percent (5%) passing the no. 4 sieve. Fine aggregate shall consist of sand having clean, hard, durable, uncoated grains ranging in size from coarse to fine from one hundred percent (100%) passing the no. 4 to a maximum of eight percent (8%) passing the no. 100 sieve. Water used in concrete shall be clear and free from oil, acid or alkali and shall not be salty or brackish. Cement, fine aggregate, coarse aggregate and water shall be mixed in a batch mixer in the proportion shown on the table below.
Min. Cement Content Per Cubic Yard Concrete | Max. Water Gal. Per Bag Of Cement | Weight Of Fine Aggregate Per Bag Of Cement | Total Weight Of Aggregate Per Bag Of Cement | Slump Range In Inches |
5.7 | 6 | 190-230 | 595 | 3-4 |
(Ord. 14.08)
2. The weights of fine and coarse aggregate shall be adjusted by the engineer or city superintendent to ensure concrete of a satisfactory plasticity and workability, using not more than the maximum permissible net water content shown. During the progress of the work, the total weight of aggregate per bag of cement shall not be changed except when ordered by the engineer or city superintendent. (Ord. 14.08; amd. Ord. 2.32)
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