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septic info including designs 2004/2006/2014
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1570 6th Avenue North - 26-118-23-32-0019
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septic info including designs 2004/2006/2014
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Last modified
8/22/2023 4:17:22 PM
Creation date
1/15/2019 12:41:15 PM
Metadata
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Template:
x Address Old
House Number
1570
Street Name
6th
Street Type
Avenue
Street Direction
North
Address
1570 6th Avenue North
Document Type
Septic
PIN
2611823320019
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oNs.T� ' Univeristy of Minnesota <br /> S�""`oc Non-Level Pressure Ditribution Worksheet <br /> TRawTw+arvr � <br /> Pue�a�ewiw _ � <br /> 1. Enter each system lateral elevation and len th in order of highest to lowest elevation <br /> Lateral 1 Elevation 97.1 ft Length of pipe 29 ft <br /> ;L'ateral2 .";Elevation 94:9 ; ft.: . Length of piPe 34 .ft. <br /> Lateral 3 Elevation ft Length of pipe ft <br /> _ , i.at�r��'4 , Elevation ft Length.of pipe . fk; _;� . <br /> Lateral 5 Elevation ft Length of pipe ft i <br /> 2. Calculate change in elevation over the laterals. <br /> Highest elevation-lowest elevation: 97.1 - 94.9 = 2.2 feet <br /> 3. Calculate the Total Head=head at orifices(either 1 or 2 ft)+change in elevation(2) <br /> Enter 1 ft if design if for a single family home or 2 ft for anything efse(min design pressure head at perforation) <br /> ��ft + 2.2 ft = 3.2 feet <br /> This worksheet can not be used if greater than 5 feet. Design must be modified or valving must be used to equalize flow. <br /> 4. Calculate pressure head for each lateral <br /> 1. Highest Trench Elevation(E1)the Head = 1 or 2 feet <br /> 2. For all other laterals the pressure head is calculated as 2 feet plus the change in elevation from Lateral 1. <br /> Laterall Elevation 97.1 1.0 ft <br /> Lateral 2 Elevation = •94.9' _ 1 + (Et,~E2] .= 1 + [ 97:1 _ 94.9 ]= 3.2 ft <br /> Lateral 3 Elevation 0.0 0 + [E1 -E3] = 0 + [ 97.1 - 0.0 ]= 0.0 ft <br /> Lateral 4 �ievation OA 0 + {E1 -E4] _ , ' 0 + j; 97.1 _ 0.0 ]_ - 0:0 ft <br /> Lateral 5 Elevation 0.0 0 + [E1 -E5] = 0 + [ 97.1 - 0.0 ]= 0.0 ft <br /> 5. Determine flow rate per hole(See figure E-6). <br /> Select a perforation diameter and the corresponding gallons per minute interpolatin as needed. <br /> Lateral 1 Pres 1.0 Perf Diameter 7/32 = 0.56 gpm � <br /> Lateral 2 Pres 3.2 ; Perf Diameter 7/32 = 1:00 gpm <br /> Lateral 3 Pres 0.0 Perf Diameter = gpm <br /> Lateral4 Pres �0:0 Perf Diameter = _ gpm . <br /> Lateral5 Pres 0.0 Perf Diameter = gpm <br /> 6. Calcufate flow in gallons per minute for Lateral 1 -Select a spacing and enter in box. <br /> Number of perforations=[(len th of ipe-2)lspacing]+1 <br /> [( 29 ft-2ft) / [�2 ft]+1 = 14 perforations(Check figure E-4 to make sure it is ok) <br /> Flow=number of perforations x flow rate <br /> 14 perF x 0.6 gpm = 7.8 gpm for Lateral 1 <br /> 7. Calca�lats the g�!lons per minute Qer fQot for Lateral 1 <br /> This value wil!then be used to make sure fhe gallon per minute per foot is equivalent in each lateral. <br /> Gallons/length= 7.8 gpm / 29 ft= 0.27 gpm/ft <br /> E-6 Perforation Dischar e in GPM E-4 Maximum Number of 1/4 inch perforations <br /> Pressure er lateral to uarantee<10%dischar e variation <br /> Head Perforation Diameter in inches Perf <br /> feet 1/8 3/16 7l32 1/4 Spacing <br /> 1 0.18 0.42 0.56 0.74 feet 1 in 1.25 in 1.5 in 2.0 in <br /> 1.5 0.22 0.51 0:68 0,90 2.5 8 14 18 28 <br /> 2 0.26 0.59 0.80 1.04 3A 8 13 17 26 <br /> 2.5 0.29 `< 0.65 0.88 � 1.'17 3.3 7 12 16 25 <br /> 3 0.32 0.72 0.98 1.28 4A 7 11 15 23 <br /> 4 0.37 0.83 1.13 1:47 5.0 6 10 14 22 <br /> 5 0.41 0.94 1.26 1.65 <br /> Page 1 of 2 <br />
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