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� � � (�STP Non-Levei Pressure Distr�bution ' <br /> Niin�esota Polluti�r� ���l'��S.I7'Y . <br /> Cantroj Agency <br /> Desi�n Worksheet �� �r,�N�:������ <br /> ProjectiD: v 72.08.06 <br /> t. Enter wil trc:atment area(STAy tength in nrder of the Highest Etevati�to the Lowest Elevatio»: <br /> Lateral 1 €'ipe Elevation 100,0 ft �.ength of STA from manifdd 32 ft Nigtrest <br /> Laterat 1 Pipe Etevation 100.0 ft Length ot STA 32 ft <br /> t.aterat 3 PiQe Elevatiort 100.0 ft Length of$TA 32 ft <br /> Laterat4 Pfpe Elevatian 49.0 ft Length of STA 32 !t <br /> Lateral 5 Fipe£tevatfa� 94.0 ft Length caf S7'A 32 ft � <br /> Lateral 6 Pipe Etevatio� 49.0 ft Lengih of SiA 32 ft Lawest <br /> Z. Cakulate tixmge 7n£ievvtion over the laterats <br /> Y Highest Ekevetion(Laterat tj•Lawest Elevation LLast laterai dboYe) tOD.O ft - 44.0 {� s 1.0 {t <br /> 3. Select Mln7mvm Avercge Nead: 1.0 f� <br /> Use 1.d it for dwettings using 3/16 to 1Id inch perforations. <br /> Use 2,O ft for dwelt9ngs tuing 118 inch perforaCionr,or,for MS75 a�other establishmenis using 3/16 Yo 1/4 i�ch perforations. <br /> Tt,is worksheet can�wt be used for a Minirnwn Average Head of 5.0 fe�t. Design must be modified or vatving must be used Lo <br /> equalize fipw. <br /> 4, {alcutate the 7otat Fiend a Mininunn Average Heod{Line 3j r Changr in E(evatfan (Line 2} <br /> 1.0 ft + 1.0 ft = 2.0 ft <br /> 5. Calcutate Preswre Nead for�ach Latero! <br /> A.Highest trench etevation{Pipe E(evati�1}:Pressure Head equats Minfmvm Averege Hear! {Line 3y <br /> E3.Att other tr+enches:Presscire Heod equats Mlnimum Average Nead{Line 3}plus the Chanye in Etevatfon from Lateral 1. <br /> �levation of ftevation of <br /> Minimum Average Head �terai 1 Lateral Pr�sure Mead <br /> Lai 1 1.0 ft « [ 10i1.0 ft - 1U0,0 ft) = t.� f� <br /> Lat 2 1.� ft + ( 1�.0 ft - 100.0 ft] _ �.0 ft <br /> I.at 3 1.0 ft + [ 10p.0 tt • TUOA ft] _ !.0 fz <br /> lat 4 t.4 ft + j 100.0 ft - 99.0 ft] = 2•0 ft <br /> lat 5 1.D ft + [ 1I3D.6 ft - 99-U ftj = 2•a ft <br /> Lat b 7.0 ft � [ 100.0 ft - 99.0 ft) = 2•0 ft <br /> b. t?eYermine the flow Rnte per Hate (� L ,,,/ <br /> Select a Ferfwation Diemeter and the corresponding galians per mfnute t'rom Yhe � = � 7.V�CC.L z� <br /> Perforation Discharge Lat��e below,adjustfng as nee�ded. C¢t1.60;dAperforatfpn+�iameter;h=preswre head <br /> or Calcutate Perforation Discharge(�in GPM: <br /> Lat 1 Pressure Head t.0 it Per(oration Diameter 7l32 = Q.S6 GPM 0.2187:Nighest <br /> Lat 2 Aressure Heatl 1.0 ft Fertoraifon Diameter ��32 = Q•5� G?M p,z�$7� <br /> Lat 3 Preswre Head 1•b ft Perforation Diameter 7J32 _ 0.5d GPM 0.21&75 <br /> Lat 4 Pressure Mead Z•� ft Perfora�ion Diameker ���2 - 0•� G� O.i1875 <br /> Lat 5 Vressure Head 2.� ft Perforation Diartteter 7/32 c 0.80 GPM 0.21875 <br /> Lat 6 Pressure htearS 2•0 ft Perfwation Diart�eter i132 = a.80 GFM p,x�g7:Lowest <br />