Comp Plan 1974-1977 FILE #1 - Laserfiche WebLink

Home

4.02 Building Sewers a. The building sewer, and all piping up to the point where the disposal field soil treatment area begins, shall be of watertight piping and joints. Joints between this piping and other appurtenances of the system shall be watertight. The use of perforated pipe or its equivalent is prohibited. diameter. No building drain or building sewer shall be less than four inches in c. The buried or concealed portion of any building sewer, building drain or branch thereof shall be located at le~st_20_feet from any well. That portion located less than 50 feet from any well shall be constructed of cast iron pipe with air tested joints. The air test should be made by attaching an air compressor or test apparatus to a suitable opening and closing all other inlets and outlets to the sewer and/or drain under test by means of proper testing plugs. Air shall be forced into the system until there is uniform pressure of five pounds per square inch in the section being tested. The system shall be considered satisfactorily air tested if the pressure therein remains constant for 15 minutes without the addition of air. d. The portions of any buried sewer more than 50 feet from a well shall be constructed of cast iron, vitrified clay, cement-asbestos, concrete or other approved pipe material. e. All joints between pipes and fittings in the building sewer shall have watertight and root tight joints. Portland cement mortar joints shall not be allowed. Lines shall provide a grade of not less than one-eighth inch per foot. Where build- ing sewers exceed 50 feet in length, lines shall provide a grade which will allow a flow velocity of not less than two feet per second. In no case shall the grade exceed 2.0 percent. All changes of §rade shall be by means of long sweep ells. Where long sweep ells are not used and where the direction changes by more than 22-1/2 degrees, accessible watertight cleanouts shall be provided. 4.03 Septic Tanks. shall be: General: All tanks, regardless of material or method of construction One piece, precast. Watertight. So designed and constructed as to withstand all lateral earth pressures under saturated soil conditions with the tank empty. So designed and constructed as to withstand a minimum of seven feet of saturated earth cover above the tank top. Not subject to excessive corrosion er decay. b. Design: All tanks, regardless of material or method of construction, shall conform to the following design criteria: