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OSTP Pressure Distributian <br /> ��'i I�'L IZ�1 T�` <br /> ,•.�,;�,�,�.,<�t.� �����,,����, Design Worksheet �� �I�••:�5��.� <br /> COrlirO� �1�c:'.�Cy. <br /> ProjettiD: v 12.08.06 <br /> 1. Media Bed Width: 10 ft <br /> 2_ Minimum Number of Laterals in systemizone= [(Media Bed Width (Linet) -4)=3] + 1 round up to the neareast whote number+ 7. <br /> { 10 -4 j; 1 = �laterals <br /> 3. Designer Setected Number of Laterals: �taterats <br /> Cannot be tess th¢n line 2(acceot in at-ffrades) -- <br /> 4. Setect PerforQtion Spacing: 3.0 ft -- <br /> _ <br /> 5. Select Perforation Diameter Size: 1/4 in � - "" � -"�-' <br /> 6. Length of Loterafs =Media Bed Length -2 Feet_ <br /> -_._� ___ ---- -------- ---------` <br /> 32 - 2ft = 30 ft Perforation can rrot be ctaser then 1 foot from edge. <br /> � Determine the Number of Perforation Spaces. Divide the Len�th of L.aterats (Line 6)by the Perjorotion Spocing (Line 4)and <br /> round down to the nearest whote number. <br /> IJumber of Perforation Spnces = 3Q ft .- �ft = t0 Spaces <br /> Number of Perforations per Latera! is equat to 1.0 plus the Number of Perforation Spoces (Line 7). Check tabte below to verify the <br /> $' number of perforations per tatera[guarantees tess than a 10%discharge variation. The vatue is doubte with a center manifold. <br /> Perforafions Per Latera! = 10 Spaces + 1 = 11 Perfs. Per Lateral <br /> 9. Toto!Number of Perforations equals the Number of Perforotions per Latera( {Line 8)muttiplied by the Number of <br /> Perforated LQtera(s (Line 3). <br /> 11 Pert. Fer Lateral X ��Number of Perf. Laterals = 33 Total Number of Pert. <br /> 10. Setect Type of Manifotd Connection (End or Center): L End ❑center <br /> 11. Setett Latera!DiQmeter(See Tab(e): 1.50 in <br />