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� � OSTP Pump Selection Design uN��ERs�TY Minnesota Pollution Worksheet OF MINNESOTA Control A e�c -�- 10. Equivalent tength of pipe fittings. Equivalent Length Factors(ft.)for PVC Pipe Fittings Section 10 is for Collection Systems ONLY and dces NOT need to be completed for individual subsurface sewage treatment systems. Fitting Type �Pe Diameter(in.) 1 Yz 2 3 Quantity X Equivalent Length Factor=Equivalent Length Gate vatve 1.07 1.38 2.oa 90 Deg Elbow 4.03 5.17 7.67 Equivalent Equivalent 45 Deg Elbow 2.15 2.76 4.09 Fitting Type Quantity Length Fador length (ft) Tee-Flow Thru 2.68 3.45 5.11 Tee-Branc F ow 8.05 10.30 15.30 Gate Valve X - Swing CheCk Ydlve 13.40 17.20 25.50 90 Deg Etbow X = Angle vatve 20.70 25.80 38.40 Gtobe Valve 45.60 58.60 86.90 45 Deg Elbow X - Butterfty Valve - 7J5 11.50 Tee-Ftow Thru X = Tee-Branch Flow X = NOTE: Equivalent length values for PVC pipe fittings are based on calculations using the Hazen- Swing Check Valve X - Witliams Equation. See Advanced Designs for SSTS Angle Valve X = for equation. Other pipe material may require Globe Vatve X = different equivalent length factors. Verify other equivatent tength factors with pipe material Butcerfly Valve X = manufacturer. Valve 10 X = NOTE: System insta(ler should contact system designer if the number of fittings varies from the Valve 11 X - desiQn to the actual installation. A. Sum of Equivatent Length due to pipe fittings: �ft Hazen-Williams Equation for h B. Total Prpe Length =Suppty Pipe Length (5.6)+Equivalent Pipe Length (9.A.) 1�.5 n � ft + � ft - �ft h.f D4.87 *�`� TC)1.85 �kL C, Hazen-Witliams friction loss due to pipe fittings and suppty pipe(h�): Q in gpm L in feet D in inches C= 130 (10.5 .- Pipe Diameter°�$') X ( Flow Rate = Constant)'�85 X Totat Pipe Length (10.6) (10.5 : �in4.s� � X (�9Pm=130),.as X �ft =�ft 11• Tota(Head requirement is the sum of the Elevation Difference (Line 3),the Distribution Head Loss(Line 4),Additionat Head Loss(Line 5), and either Supply Friction Loss(Line 9),or Friction Loss from the Supply Pipe and Pipe Fittings for co(lection systems(Line 10.C) NOTE:Supply Friction Loss(Line 8)need ONlY be used if NOT a collection system. NOTE:Friction toss from the Supp/y Pipe and Pipe Fittings(Line 9.C)need ONLY 6e used if system is a col(ection system. 9.0 h + 5.0 ft + �ft + 3.8 ft = 17.8 ft 3. PUMP SELECTION A pump must be selected to deliver at teast 29 GPM(Line 1 or Line 2)with at least �$ feet of total head. Comments: Pump type I hereby certify that I have compieted this work in accordance with all applicable ordinances,rules and laws. , Joseph J Olson � 810 04/16/10 (Designer) '-� . (Signature) (License#) (Date)