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OSTP Pressure Distribution <br /> L���-�R,����� <br /> ,.,;�,r,.�;<�,., ������,r,�rr, Qesi�n Worksheet .-�� �����I:�t:>-;�; <br /> cvnt�o� »qe�,c� <br /> ProjectlD: v 12.08.06 <br /> 1. Media Bed Width: 90 ft <br /> 2. Minimum Number of Laterals in system/zone= [(Media Bed Width(Linei)-4)=3] + 1 round up to the neareast whole number+ 1. <br /> ( 10 -4 j} 1 = �taterals <br /> 3. Designer Setected Number of Latera(s: �taterats <br /> Cannot be tess thQn tine 1(Qcre�t in�t-erades) <br /> 4. Setect Perforatron Spacing: 3.d it . <br /> - <br /> 5. Select Perforation Diameter Size: 1/4 �n ----'`�`�`-------�"--�'--fY4�--------�-----.____ ___.�.F._.,�,. <br /> - . _ _ _ --. —=- __ _. __ <br /> 6. Length of Latera(s =Media Bed Length-2 Feet. <br /> _ _ _ _. __ _ <br /> 32 - 2ft = 30 ft Aerforation can not be ctoser[hen 1 foot from ed�e. <br /> � Determine the Number of Perfaration Spaces. Divide the Length oJ iQterals (Line b)by the Perjoration Spacing (Line 4)and <br /> round down to the nearest whote number. <br /> Number of Perforation Spaces = 30 ft .- ��ft = 10 Spaces <br /> Number of Perforations per LoterQt is equat to 1.Q plus the Number of Perforation Spaces (Line 7). Check tabte betow to verify the <br /> 8' number of perforations per laterat guarantees tess than a 10%discharge variation. The vatue is doubte with a center manifold. <br /> Perfo�otions Per Lateral = 10 5paces + 1 = 11 Perfs. Per Laterat <br /> 9• Totat Number of Perforations equats the Number of Perforations per Laterol {Line 8)muttiplied by the Number of <br /> Perforctted Laterots (Line 3). <br /> 11 Pert. Per Laterat X ��Number of Perf. Laterats = 33 Totat Number of Perf. <br /> 10. Setect Type of Manifo(d Connection (End or Center): �E„� i'`;�m� <br /> 11. Select Lateral Diameter(See Tabte): 1.50 in <br />