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2000-P02627 - septic
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3680 Jacobs Mill Road - 32-118-23-24-0009
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2000-P02627 - septic
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Last modified
8/22/2023 4:40:07 PM
Creation date
3/14/2017 1:07:29 PM
Metadata
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Template:
x Address Old
House Number
3680
Street Name
Jacobs Mill
Street Type
Road
Address
3680 Jacobs Mill Road
Document Type
Septic
PIN
3211823240009
Supplemental fields
ProcessedPID
Updated
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r� J <br /> . � � � 9 <br /> PUMP SELECTION PROCEDURE <br /> A. Determine pump capacity: <br /> Gravity Distribution <br /> 1. Minimum suggested is 20 gpm <br /> 2. Maximum suggested is 45 gpm Perforation Discharges in GPM <br /> Head Perforation diameter <br /> Pressure Distibution feet inches <br /> 3.a. Select number of perforated laterals �/32 1/4 <br /> b. Select perforation spacing= feet. l.oa 0.56 0.74 <br /> c. Subtract 2 ft. from the rock layer length. i.5 0.69 0.90 <br /> 2.Ob 0.80 1.04 <br /> R��ay����,g�,"2ft. = feet. <br /> d. Determine the number of spaces between perforations. a Use 1.o foot single homes. <br /> Length perf.spacing= ft.= ft.= spaces b Use 2.0 feet for anything else. <br /> e. spaces+1 = perforations/lateral <br /> f. Multiply perforations per lateral by number of laterals to <br /> get total number of perforations. �� x ��5,a«A = perforations. <br /> S• � X�,m �r - gPm• � <br /> // Z <br /> SELECTED PUMP CAPACITY `� � gpm <br /> B.Determine head requirements: <br /> 1. Elevation difference between pump and point of discharge. <br /> �feet <br /> 2. If pimlping to a pressure distribution system,five feet for pressure s�°°°'�"'SYS'°"' <br /> required at manifold if gravity s stem,zero. °•°='°=•°� <br /> � feet Total pipe Imgth <br /> 3. Friction loss <br /> a. Enter friction loss table wit15 gpm and pipe diameter. ,,,,� ��,,,;o„u�c�,e„�e <br /> Read fric 'on loss in feet per 100 feet from table(F-14). P'� <br /> ------- -- - <br /> F.L._ .O ft./100 ft of pipe <br /> ................. . . <br /> b. Determine total pipe length from pump to discharge �--�-�-�-�-�---�-�----��"�--'""'"�" <br /> point. Estimate by adding 25 percent to pipe length for fitting <br /> loss,or use a firiing loss chart(F-15 feet). <br /> Equivalent pipe length-125 times pipe length= <br /> �f,��X�.25= Zov feet Friction Loss in Plastic Pipe <br /> c. Calculate total friction loss by multiplying <br /> friction loss in h/1 ft by equivalent pipe length Nominal <br /> pipe dia. <br /> Total friction loss- xZU't� =100= feet �ow Rate <br /> 4. Total head required is the sum of elevation difference, �m 1.5" 2" 3" <br /> special head requirements,and total friction loss. <br /> 20 2.47 0.73 0.11 <br /> �+ `� + 8 25 3.73 1.11 0.16 <br /> (1) (2) (3c) � 5.23 1.55 0.23 <br /> 35 6.% 2.06 0.30 <br /> TOTAL HEAD �feet � 11.07 3.8 0.48 <br /> 50 13.46 3.99 0.58 <br /> 55 4.76 0.70 <br /> C. Pump selection 60 5.60 o.s2 <br /> 65 6.48 0.95 <br /> 70 �.44 1.09 <br /> � �J �Z 1. A pump must be selected to deliver at least <br /> `77 gpm (Step A) with at least �.3 feet of total head (Step B). <br />
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