Ordinance - #84-02 - 02/28/1984 - Laserfiche WebLink

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-6- 150.01.4A SITE Lr~ALUAT ION Ail proposed sites for individual sewage treatment systems shall be evaluated by the Ramsey Plumbing Inspector in accordance with Chapter 170.04 (Soils) and Chapter 170.03 (Subdivisions). 150.01.4B BUILDING SEWERS 1. 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. 2. No building drain or building sewer shall be less than four (4) inches in diameter. 3. The buried or concealed portion of any building sewer, building drain or branch thereof shall be located at least twenty (20) feet from any well. That portion located less than fifty (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 (5) pounds per square inch in the section being tested. The system shall be considered satisfactorily air tested if the pressure therein remains constant for fifteen (15) minutes without the addition of air. 4. The portions of any buried sewer more than fifty (50) feet from a well shall be constructed of material as approved by the State Plumbing Code. 5. Ail 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 (1/8) inch per foot. Where building sewers exceed fifty (5o) feet in length, lines shall provide a grade which will allow a flow velocity of not less than two (2) feet per second. In no case shall the grade exceed two per cent (2.0%). All changes of grade shall be by means of long sweep ells. Where long sweep ells are not used and where the direction changes by more than twenty and one-half (20-1/2) degrees, accessible watertight cleanouts shall be provided. 150.01.4C SEPTIC TANKS Subd. 1 GENERAL Ail tanks, regardless of material or method of construction, shall be: de One (1) 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 (7) feet of saturated earth cover above the tank top; Not subject to excessive corrosion or decay.