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

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- 12 - i I I I I I '1 I 5. The drop box sbmll hmve a removable cover either flush or above finished grade or covered by no more thmn six (6) inches of soil. Subd. 2 PRESSURE DISTRIBUTION 1. Pressure distribution laterals shall be sized as shown in Table I. 2. Laterals s~all 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. Laterals shall be connected to a header pipe which is at least one and one-half and no more than two inches in dieter. TABLE I Maximum Allowable Lateral Lengths in Feet from Header Pipe Perforation Spacing Perf. 2.5 Feet 3.0 Feet Dia. Pipe Dia. Pipe Dia. 1" 1-1/4" 1-1/2" 1" 1-1/4" 3/16" 34 52 70 36 60 7/32" 30 45 57 33 51 1/4" 25 38 50 27 42 1-1/2" 75 63 54 150.014E DOSINS 'i I I i I 1. The dosing chamber shall be watertight and constructed of sound and durable materials not subject to excessive corrosion or decay. 2. There shall be one (1) or more ,mnholes, at least twenty (20) inches in dimension, and preferably located directly above the dosing device. The manhole shall extend through the dosing ch~er cover to final grade and shall be so constructed as to prevent unauthorized entry. 3. The size of the effluent dose shall be determined by design of the soil treatment unit, but in no case shall the dosing chamber be sized to provide a dose of less than seventy-five (75) gallons. DOSIb~ DEVICES MIR ~P~AVITY DISTRIBDTION I I 1. A p~p or siphon shmll deliver the dose to the soil treatment unit for gravity distribution over the soil treatment area. 2. For systems for dwellings, the dosing device shall discharge at least six hundred (600) gallons per hour, but no more than two thousand seven hundred (2,700) gallons per ~ur. I I 3. For other establishmmnts, the dosing device should discharge at a rate at least ten per cent (10%) greater than the water supply flow ~ra. te, but no faster than the rate at which effluent will flow out of the distribution device.