Agenda - Council - 02/28/1984 - Laserfiche WebLink

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I I I I I I I I i I ! I I I I I I -6- 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 s~all be located from the well as specified by the State Board of Health and the State Plumbing Code. 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 Pl~a~ing Code. 5. 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 (1/8) inch per foot. Where building sewers exceed fifty (50) 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%). Ail 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. 150.014C SEPTIC TAblKS Subd. 1 GENERAL Ail tanks, regardless of material or method of construction, shall be: dj Me 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 minim~ of seven (7) feet of saturated earth cover above the tank top; Not subject to excessive corrosion or decay. Subd. 2 DESIGN Ail tanks, regardless of material or method of construction, shall conform to the following design criteria. 1. The liquid depth of any septic tank or compartment thereof shall be not less than thirty (30) inches. A liquid depth greater than six and one-half (6-1/2) feet shall not be considered in determining tank capacity. 2. No tank or compartment thereof shall have an inside horizontal dimension less than twenty-four (24) inches.