2009-00423 - new septic - Laserfiche WebLink

Home Browse Search

Pump Selection Design 's Minnesota Pollution Worksheet ME Control oo��.,� r1 9. Equivalent length of pipe fittings. Equivalent Length Factors(R.)for PVC Pipe Fittings Section 9 is for Collection Systems ONLY and does NOT, to be Pipe Diameter(in.) comrpleted for individual subsurface sewage treatment systema. FittingT 1% 2 3 Quantty X Equivalent Length Factor=Equivalent Length Gate valve 1.07 1.38 2.04 90 Deg Elbow 4.03 5.17 7.67 45 Deg Elbow 2.15 2.76 4.09 Fitting Type Quantity Equivalent Equivalent Tee-Flow Thru 2.68 3.45 5.11 Length Factor Length(ft) Tee-Branch Flow Swing Check Valve 13.-00 17.20 25.50 Gate Valve X Angle Valve 20.10 25.80 38.40 90 Deg Elbow X _ Globe Valve 45.60 1 58.60 86.90 Butterfly Valve - 7.75 11.50 45 Deg Elbow X Tee-Flow Thru X _ Tee-Branch Flow X = NOTE:Equivalent length values for PVC pipe Swing Check Valve X - fittings on based calculations using the Hazen- Williams Equation. See Advanced Designs for SSTS Angle Valve X _ for equation. Other pipe material may require different equivalent length factors. Verify other Globe Valve X equivalent length factors with pipe material Butterfly Valve X _ manufacturer. Valve 10 X _ NOTE:System installer should contact system designer if the number of fittings varies from the Valve 11 X _ design to the actual installation. A. Sum of Equivalent Length due to pipe fittings: ft B. Total Pipe Length -Supply Pipe Length(5.B)+Equivalent Pipe Length(9.A.) 0 + Q - Ofeet h= 0.128*L*Q-"2 C. Friction toss due to pipe fittings and supply pipe(h): 100*D4.11611 ( 0.128 X Total Pipe Length(9.6) X Flow Rate'- ) + { 100 X Pipe Diameterxem ) ( 0.128 X II X1.852 ) ,. ( 100 X 11 .8655 )- ft 10. Total Head requirement is the skin of the Elevation Difference (Line 3),the Distribution Head Loss(Line 4),Supply Friction Loss(Line 8),and Friction Loss from the Supply Pipe and Pipe Fittings-if collection system(Line 9.C) NOTE:Supply Friction Loss(Line 8)need ONLY be used if NOT a collection system. NOTE:Friction loss from the Supply Pipe and Pipe Fittings(Line 9.C)need ONLY be used if system is a collection system. '14.0 ft + 5.0 ift + 4 ft E= _ 23.1 ft 3. PUMP SELECTION A pump must be selected to deliver at least 29 GPM(Line 1 or Line 2)with at least 23 feet of total head. 1 hereby certify that 1 have co npleled this work in accordance with all applicable ordinances,noes and laws. 06/25/09 Joseph J Olson 810 (Designer) (Signature) (License#) (Date)