New public sanitary sewers and all extensions to public sanitary sewers shall be properly designed in accordance with the Recommended Standards for Sewage Works, as adopted by the Great Lakes Upper Mississippi River Board of State Sanitary Engineers and in strict conformance with all requirements of the New York State Department of Health. Plans and specifications shall be submitted to and approval obtained from the Town Engineer, County of Onondaga and New York State Department of Health before construction may proceed. The design of the sewers shall anticipate and allow for flows from all possible future extensions or development within the immediate drainage area.
A. 
General requirements. When a property owner, builder or developer proposes to construct sanitary sewers or extensions to sanitary sewers in an area proposed for a subdivision, the plans, specifications and method of installation shall be subject to the approval of the Town Engineer in accordance with § 166-8. Said property owner, builder, or developer shall pay for the entire installation, including a proportionate share of the cost of a treatment plant, intercepting or trunk sewers, pumping stations, force mains, and all expenses incidental thereto. Each building lateral and street lateral must be installed and inspected pursuant to Article V and the inspection fees shall be paid. Design of sewers shall be as specified in § 166-10. Sewers shall be installed in conformance with Section 3 through 6 of ASTM Specification C-12. The installation of the sewer shall be subject to periodic inspection by the Enforcement Officer and the expenses for this inspection shall be paid for by the owner, builder or developer. The Enforcement Officer's decisions shall be final in matters of quality and methods of construction. The sewer, as constructed, must pass the exfiltration test required in § 166-11 before any building lateral is connected thereto. The Enforcement Officer shall be notified well in advance of the start of construction operations so that such inspection procedures as may be necessary or required may be established. No sanitary sewers will be accepted by the Town Board until such inspections of construction have been made as will assure the Town Board of compliance with these regulations and any amendments or additions thereto.
B. 
Plans, specifications and methods of installation. Plans, specifications and methods of installation shall conform to the requirements of Articles IV, V and VI. Components and materials of sewage works installations not covered in this chapter, such as pumping stations, lift stations or force mains shall be designed in accordance with § 166-8 and shall be clearly shown and detailed on the plans and specifications for approval. When requested, the owner, builder or developer of the proposed installation shall submit to the Town Engineer all design calculations and other pertinent data to supplement the Town Engineer's review of the plans and specifications.
Sewer design shall be in accordance with the following provisions:
A. 
Pipe material, installation, etc.
(1) 
Pipe material shall be either asbestos-cement, conforming to ASTM Specification C-428, Type III; extra strength vitrified clay conforming to ASTM Specification C-76. No standard strength clay pipe or nonreinforced concrete pipe shall be used. Minimum internal pipe diameter shall be eight inches. Joints for each kind of pipe shall be designed and manufactured such that "O" ring gaskets of the "snap-on" type are employed. Gaskets shall be continuous, solid, natural or synthetic rubber and shall provide a positive compression seal in the assembled joint such that the requirement of § 166-11 are met. Joint preparation and assembly shall be in accordance with the manufacturer's recommendations. Wye branch fittings shall be installed for connection of street laterals in accordance with § 166-17F. Trench widths as measured just above the crown of the pipe shall be exceeded by the following:
Pipe Diameter
Trench Width
8 inches
3 feet 3 inches
10 inches
3 feet 6 inches
12 inches
3 feet 9 inches
14 inches
4 feet 0 inches
15 inches
4 feet 1 inch
16 inches
4 feet 2 inches
(2) 
If the trench widths are found during field inspection to exceed the limits in the above table, the sewer pipe shall be encased with a minimum of six inches of concrete for the length of trench, which width exceeds the maximum.
B. 
Laying pipe; additional requirements. Pipe shall be firmly and uniformly bedded in a minimum depth of three inches of No. 1A or No. 1 crushed stone (NYSDPW Specification) or other approved method of bedding. Pipe wall thickness and field strength shall be calculated on the following criteria:
(1) 
Safety factor: 1.5.
(2) 
Load factor: 1.7.
(3) 
Weight of solid: 120 pounds per cubic foot.
(4) 
Wheel loading: 16,000 pounds.
C. 
Design; minimum safety factor. Utilizing the foregoing information, design shall then be made as outlined in Chapter IX of the Water Pollution Control Federation Manual of Practice No. 9, Design and Construction of Sanitary and Storm Sewers, and pipe shall have sufficient structural strength to support all loads to be placed on the pipe, with a 50% safety factor as listed above.
D. 
Manholes. Manholes shall be constructed at all changes in slope or alignment, and at intervals not exceeding 400 linear feet. The manholes shall be constructed with a poured 3,000 pounds per square inch concrete base 12 inches thick, steel troweled concrete bench walls and channels carefully shaped for smooth flow, precase four-foot-diameter concrete manhole barrel sections and a concentric tapered top section conforming to ASTM Specification C-478. All joints shall be sealed against infiltration. The manhole frame and cover shall be the standard design of the Town and shall be set in a full bet of mortar with no less than two courses of brick underneath to allow for later adjustment in elevation.
A. 
Method of testing. All sanitary sewers or extensions to sanitary sewers shall satisfy requirements of a final exfiltration test before they will be approved and sewage flow permitted by the Town. The exfiltration test required herein shall be performed by the property owner, builder or developer under the supervision of the Town Engineer or Enforcement Officer or persons designated by either of them who shall have the responsibility for making the proper and accurate measurements required. This test consists of filling the pipe with water to provide a head of at least five feet above the top of the pipe or five feet above the groundwater, whichever is higher, at the highest point of the pipe under test, and then measure the loss of water from the line by the amount which must be added to maintain the original level. In this test, the line must remain filled with water for at least 24 hours prior to taking of measurement. Exfiltration shall be by the drop of water level in a standpipe with closed bottom end, or in one of the sewer manholes available for convenient measuring.
B. 
Standpipe and plug arrangement; use in testing; requirement. When a standpipe and plug arrangement is used in the upper manhole of a line under test, there must be some positive method of releasing entrapped air in the sewer prior to taking measurements. The test length intervals for either type of test shall be as ordered or approved but in no event shall they exceed 1,000 feet. In the case of sewers laid on steep grades, the length of line to be tested by exfiltration at any one time may be limited by the maximum allowable internal pressure on the pipe and joints at the lower end of the line. The test period, wherein the measurements are taken, shall not be less than two hours in either type of test.
C. 
Permissible leakage. The total leakage of any section test shall not exceed the rate of 25 gallons per 1000 feet of pipe per 24 hours per inch of manufacturer's designation of internal pipe diameter. For purposes of determining the maximum allowable leakage, manholes shall be considered as sections of forty-eight-inch diameter pipe, five feet long. The equivalent leakage allowance shall be six gallons per manhole per 24 hours for forty-eight-inch-diameter manholes. If leakage exceeds that amount, the necessary repairs or replacements required shall be made to permanently reduce the leakage to within the specified limit and the tests shall be repeated until the exfiltration test is met.
All sanitary sewers and extensions to sanitary sewers constructed at the property owner's, builder's or developer's expense, after final approval and acceptance by the Town Engineer, shall become the property of the Town and shall thereafter be maintained by the Town except such works as may be constructed under the provisions of the Transportation Corporations Law. Said sewers, after their acceptance by the Town, shall be guaranteed against defects in materials or workmanship, for one year by the builder or developer. The guarantee shall be in such form and contain such provisions as required by the Town Board, secured by a surety bond or such other security as the Town Board may approve.
No property owner, builder or developer shall be issued a building permit for a new dwelling or structure requiring sanitary facilities within the Town unless a suitable and approved method of disposal of sewage conforming to the provisions of this chapter is proposed.
Any person constructing, or causing to be constructed, sewage works or any part thereof must present a certificate of insurance showing suitable liability insurance before a permit will be issued for construction of same.