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

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- 12 - 1. The drop box shall be watertight and contructed of durable materials not subject to excessive corrosion or decay. Each outlet shall have at least six (6) inches of sidewall space and the side. of any outlet shall be at least four (4) inches from any corner. 2. The invert of the inlet pipe shall be at least one (1) inch higher than the invert of the outlet pipe to the next trench. 3. The invert of the outlet pipe to the next trench shall be at least two (2) inches higher than the invert of the outlet pipe of the trench in which the box is located. 4. When sewage tank effluent is delivered to the drop box by a pump, the pump discharge shall be directed against a wall or side of the box on which there is no outlet. 5. The drop box shall have a removable cover either flush or above finished grade or covered by no more than six (6) inches of soil. Subd. 2 PRESSURE DISTRIBUTION Pressure distrubution laterals shall be sized as shown in Table 2. Laterals shall be spaced no further than 20 inches from a trench or bed wall. 3. Laterals shall be spaced no further than 40 inches apart· 4. I~aterals shall be connected to a header pipe which is at least one and one-half and no more than two inches in diameter. TABLE I Maximum Allowable Lateral Lengths in Feet from Header Pipe Perf. Dia. Il! 3/16" 34" 7/32" 30 1/4" 25 Perforation Spacing 2.5 Feet 3.0 Feet Pipe Dia. Pipe Dia. 1-1/4" 1-1/2" 1" 1-1/4" 1-1/2" 52 70 36 60 75 45 57 33 51 63 38 50 27 42 54 150.01.4E DOSING 1. The dosing chamber shall be watertight and contructed of sound and durable materials not subject to excessive corrosion or decay. 2. There shall be one (1) or more manholes, at least twenty (20) inches in dimension, and preferably located directly above the dosing device. The manhole shall extend through the dosing chamber cover to final grade and shall be so constructed as to prevent unauthorized entry.