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INTERWEST-EVERETT CONTRACTOR'S YARD SITE IMPROVEMENTS <br /> SANITARY SEWER PUMP CALCULATIONS <br /> EIONE SPD PUMP PERFORMANCE CURVE <br /> 100 - GRINDER PUMP, 1HP, 1725 RPM - 230 <br /> 1 <br /> t <br /> 95 — — 220 <br /> 90 — t <br /> — 210 <br /> tr <br /> — 200 <br /> 85 — - t • <br /> 1 — 190 <br /> 1 80 - -i LOW PRESSURE SYSTEM DESIGN PRESSURE - 180 <br /> — 1 I l <br /> 75 CONSULT FACTORY - i7O <br /> FOR INTERMITTENT <br /> cc <br /> USE ABOVE .O PSI <br /> 70 - OR 185 FEET TN - 160 <br /> ' 65 - - 150 <br /> 60 - - 140 <br /> — 130 <br /> 55 - <br /> j - 120 <br /> v7 50 - <br /> U — 110 <br /> 0. <br /> a. 45 — r' - 100 cr <br /> o <br /> 40 — — 90 <br /> cc <br /> w 0 '� O <br /> a = 35 - - 80 W <br /> ' o - <br /> J W <br /> V <br /> ✓ < 30 — 70 z <br /> a <br /> } r• o 25 - - 60 a <br /> a - 50 <br /> 0 20 <br /> �-- — 4 0 <br /> 15 — <br /> - 30 <br /> ' t0 - - 4 <br /> 20 0 <br /> I- <br /> -5 — - 10 <br /> ' 1 0 - - 0 <br /> -5 - - -10 <br /> 1 -20 <br /> -10 - <br /> - -30 <br /> -15 — <br /> — -40 <br /> I -20 — — -50 <br /> -25 — — 60 <br /> I I I I I I I I I I <br /> 0 2 4 6 8 10 12 14 16 18 <br /> DISCHARGE (a), GPM <br /> ESD 08-0022 REV. 2, 6/08 <br /> I <br /> SITTS & HILL ENGINEERS, INC. 4 <br /> TACOMA, WASHINGTON <br />