Agenda - Council - 06/10/1997 - Laserfiche WebLink

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I :1 I I I I I I I I I I I ! I I I I I § 830 (b) The invert of the inlet pipe sba!~ be at least ! inch higher than the invert of the outlet pipe to the next trench. (c) The invert of' the outlet pipe to the next trench shall be at least 2 inches higher th~n the invert of' the outlet pipe o£ the trench in which the box is located. (d) 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. (f) The drop box shM] have a removable cover either flush or above finished grade or covered by no more than 6 inches of soil. b. Pressure Distribufiom Pressure distribution laterals shall be sized as shown in Table I. Laterals shall be spaced no further than 20 inches from a trench or bed wall. Laterals shall be spaced no further than 40 inches apart. Laterals shall be connected to a header pipe which is at least 1-1/2 and no more than 2 inches in diameter. TABLE I Maximl~m Allowable Lateral Lengths In Feet From Header Pipe Perforation Spac ng Perf. 2.5 Feet 3.0 Feet Dia. Pipe Dia. Pipe Dia. 3/16" 34" 52 70 36 ~ 75 7/32" 30 45 57 33 51 63 1/4" 25 38 50 27 42 54 Sub& 5. Dosir~ a. Dosing chamber. The dosing chamber shall be watertight and constructed of sound and durable materials not subject to excessive corrosion or decay. There shall be one or more manholes, at least 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. Printed 12/28/90 Page 247