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E-3 <br /> manifQlc� pipe ; <br /> �-% � pipe from pump � <br /> � <br /> Y <br /> � <br /> i <br /> end cap i <br /> ♦ ' <br /> ��i• ; <br /> alternate location <br /> of pipe from pump ; <br /> Figure E-1: Manifoid Located at End of System ! <br /> distribution manifold to the end of the lateral. A center manifold <br /> is preferred because it minimizes pipe sizes. Figures E-1 and E-2 <br /> illustrate two possible manifold positions. <br /> The hole spacing should be less than five feet*. The higher the <br /> hole density, the more uniformly the wastewater is distributed. <br /> Figure E-2: Manifold Located end cap <br /> in the Center of the System <br /> manifold pipe <br /> � �o ,, <br /> altemate location <br /> �/� i, ' of pipe from pump �0� • <br /> 4 � . <br /> .� � � .. <br /> . .,�� , �� <br /> � <br /> Perforations should be spaced no farther apart than one half of *7080.0150, 3E <br /> the rock layer width, or five feet, whichever is less. <br /> The number of perforations may be adjusted slightly to match <br /> the available pump capacity and head. The holes should be <br /> staggered between adjacent laterals, <br /> if possible. The last perforation <br /> ���,�geotextile,���,;,x�;��� • <br /> should be drilled iri the end cap of <br /> the lateral, at least one foot from the quarter-inch perforotions spaced 3'apart 2 o m k <br /> edge of the rock layer (see Figure E-3 <br /> for specifications). This final <br /> 12" <br /> perforation facilitates venting as the 9"oi rock <br /> pipe fills. . <br /> perforation sizing: 7/32"t 1/4" <br /> --� Select a hole diameter; for systems Pertoration spacing: t. �� _ 3� • <br /> serving single-family homes, 1/4- Figure E-3: lateral End Specs <br /> inch holes are sufficient and <br />