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' : � __ OSTP Pump Selec�ion Design _ Minnesota Poilution UNIVERSITY Control A enc Worksheet OF�IINNESOTA � ti��: i0. Equivalent length of pipe fittings. Equivalent Length Factors(ft.)for PVG Pipe Section 10 is for Collection Systems ONLY and does N07 need to be Fittings completed for individuai subsurface sewage treatment systems. Fiuing Type �Pe Diameter(in.) 1 Yz 2 3 Quantity X Equivalent Length Factor=Equivatent Length Gate valve �.07 �.38 2.04 90 Deg Elbow 4.03 5.17 7_67 Fitting Type Quantity Equivatent Equivalent 45 Deg Elbow 2.15 2.76 4.09 Length Fdctor Length(ft) Tee-Row Thru 2.68 3.45 5_11 Tee-Branch F ow 8.05 10.30 15.30 Gate Valve X - Swing Check Vatve 13.40 17.20 25.50 90 Deg EtbOw X = Angle Valve 20_10 25_80 38.40 45 Deg Elbow X _ Gtobe Valve 45.60 58.60 86.90 Butterfly Valve - 7J5 11.50 Tee-Fiow l"hru X = Tee-Branch Flow X = NOTE:Equivalent tength vatues for PVC pipe Swing Check Valve X _ Fittings are based on caltutations using the Hazen- Williams Equation. See Advanced Designs for SSTS Angte Valve X = for equa[ion. Other pipe material may require Globe Vatve X = different equivalent length factors. Yerify other equivalent length factors with pipe material Buttertly Vatve X = manufacturer. Vatve 10 X = NOTE:System instatler should contact system Valve 11 X _ designer if the number of fittings varies from the desiQn to the actual installation. A. Sum of Equivatent Length due to pipe fittings: C�ft Hazen-Wiltiams Equation for h B. Tota1 Pipe Length =Supply Pipe Length(5.6)+Equivalent Pipe Length (9.A.j 1 0.5 C� ft + � ft =�ft h.f = Da_s� ��Q-C)i.ss x�L C. Hazen-Williams friction loss due to pipe fittings and suppty pipe(hf): Q in gpm L in feet D in inches C=130 (10.5 = Pipe Diameter"�87) X ( Ftow Rate : Constant)'�� X Total Pipe Length (1d.6) (10.5 : ��ina'$�) X (L____�gpm�130},.ss X ��ft =�ft 11• Total Head requirement is the sum of the E(evation Difference (Line 3),the Distribution Head Loss(Line 4),Additional Head Loss(Line 5), and either Supply Friction Loss(Line 9),or Fnction Loss from the Suppty Pipe and Pipe Fittings for coltection systems(Line 10.Cj NOFE:Suppty Friction Loss(Line 8)need ONlY be used if NOT a cotlection system. NOTE:Friction Loss from the Suppiy Pipe and Pipe Fittings(Line 4.C)need ONLY be used if sysrem is a collection system. 9.0 ft + 5.0 ft + ��ft + 0.1 ft = 94.1 ft 3. PUMP SELECTION A pump must be selected to deliver at least 9 GPM(Line 1 or Line 2)with at teast �5 feet of total head. Comments: Pump type i hereby certify that I have completed this work in accordance with all applicable ordinances,rules and laws. � Joseph J Olson �----�_l- 810 12/08/10 (Designer) ��-'� (Signature) (License#) (Date)