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. 1. Determine pump capacrcy: �rw��►�� :�^G� <br /> A. Gravity DistributMn t�Roow. <br /> 1.Min�rwm ra�red�Scharge is 10 c,mm <br /> 2.Mawmum sugg�ed discharge is 45 9Pm <br /> f a other estabii�ur�ents ffi Ieast 1096 great�th�tl�e wa� <br /> supply ra�,but no fa�e�th�u�e rate at wnicn e�ent wia flo�► <br /> out of the d�str�ution device. <br /> B. PfesSUf6 Distiibuti0n-see pre.Ssufe design MrorkSheet &treatrrr�nt h�em <br /> ,F�� .'. <br /> 9e <br /> Seleded Pump Capacity: 41.3 gpm roro��r� <br /> �engsn <br /> 2A.elevotfon <br /> intet ° difference <br /> 2. Dstermine Total Dynamic tiead(TDH) p�pe j''s, <br /> A. Elevatan difference beM�een pump and pant of discharge. =i -------- - - : <br /> 18.6 feet i; = --------------------------- -----• <br /> t_�..,... _ , <br /> B. Speci�head requiremenY?(See Figure-Special Head Requi�me►�ts) <br /> ���t eaal'�Head Requ�ements <br /> Cxavity Distribu�on OR <br /> C. Fricti�loss in suPP�Y P�Pe Pressure Distn'bution 5ft <br /> 1. Select pipe diarr�eter ��in <br /> 2. En�Fgure E-9 wiTh gpm(1A or B)�d pipe diameter(C1) <br /> Read friction loss in�eet 100 feet ftom Figure E-9 E-9 F�iction Loss in Ptastic Pipe <br /> Fridion bss= 2.7 RI 100 ft of pipe 100 ft <br /> nominal <br /> 3.Determine tot�pipe length from pump disch�ge b soii system discharge pant Fbw Rate ' diameter <br /> Estimate by adding 25 percent to pipe length for 6iction loss in fittings. 1.5' 2.0' 3' <br /> Pi len times 1.25=equiva�ent pipe i�h ZO 247 0.73 0.11 <br /> 65 ft x 1.25= 81.25 feet 25 3.73 1.11 0.16 <br /> 30 5.23 1.55 0.23 <br /> 4.Caiculate total f�iction bss by mul6plying hic6on bss(C2) 35 6.96 2.06 0.3 <br /> by the equiv�ent pipe lengih(C3)and divide by 100. 40 8.91 264 0.39 <br /> Fric�on Loss= 2.7 R/100R X 81.25 R / 100= 2.2 feet 45 11.07 3.28 0.48 <br /> 50 13.46 3.99 0.58 <br /> D. Totai t�ad require�r�ent is tt�e sum of elevation diff�(A),spec�al 55 4.76 0.7 <br /> head requirements(B),and total fridion bss(C4). 60 5.6 0.82 <br /> 18.6 ft + 5 ft + 22 ft 65 6.48 0.95 <br /> 70 7.44 1.� <br /> Totai Head: 25.8 feet <br /> 3. Pump S� <br /> 1.A pump must be�to delivar at t�st 41.3 gpm(1A or B) <br /> with at least 25.8 feet�totai t�ad 2D. <br /> I hereby oertify ihat t have ted tltis work in ao�anoe wilh aU�piic�le orc�nanoes,Nies and larvs. <br /> ����) /�fZ� (Gcense� �i"Z S�� (date) <br /> Page 1 of 1 <br /> ._ _._ <br />