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' i�- - - <br /> ! <br /> .��:5 c?� �(�C��j� v�,C>l't�v i � � E-19 <br /> . . ..�., — � <br /> , Lisvibution pipcs uscd for pressure distribution m�st be constrtutc;d of pressure Fittings <br /> sound and durablc material not subject to corrpsion.�decay,ar loss of are Irriport��ltt <br /> sircngth undcr continuousiy wct coz��itions. All pipcs and associatcd <br /> ;'iitings used for pressute distribution must be properly}oined togct;ier. <br /> 1 hc pipe and connections must be aUle to withstand a pressure of:�t <br /> . least 40 ponnds per square inch. . � <br /> The perforated pipc laterals should b�connccted to a 2-inch diameter 2" diameter <br /> . manifolci pipe and chould havc cnds capped.fihe laterals should bc �$nifoid for a�l <br /> : spaced no fvrthcr than 40 inches on centcr and no further than 20 m,ounds <br /> . inchcs frem the edge of the rock. <br /> ' The manifotd pipe should be conncctcd to the supply pipe from the <br /> ' gump and should be�slopcd toward thc supply pip�from the pnmp. At <br /> i <br /> lcast 2 inches of rock should be placed over the disuibution pipes. <br /> ; <br /> Per�orated Laterais <br /> Figure E-18 shows a layout of perforated laterals �o pmvide pressure <br /> � distributioo oE cf�7uent over the rock iayer of a mound.The lengtti of <br /> ttic perfurated laceral is measurcd from the poinc where the�ffluent <br /> cnters to thc cnd cap.,All connections in the pressure disvibution <br /> system must bc tight in order to pcevcnt leakage and to withstand <br /> pressure. ar� • <br /> I,.AYOUT OF PERFORATED PIPE LATERALS fOR <br /> " � r / PRESSURE Di5TRI8llTlO,AI IN MOUNO <br /> / �IZ <br /> ' PEpF0�J1TE0 PLASTit P1PE <br /> � sp� <br /> PERfORAT14N5 SPACEO 36� � F„oetlON <br /> � i/r..- <br /> VIW O Z y�AMY 8E',i Jsi �.. h R <br /> ------ �R /�: 2�MANIFOCO - <br /> PtPE <br /> . '�r�\ PER�ORATIOt�tS ON 80TTOM OF <br /> PLA571C PtPE <br /> f�" ��" ."�'+: <br /> . i <br /> �y�M�ph�P) <br /> ' EH� ca� 40, � E�� � <br /> ' ��Rj�'"f� pUMPING C►R+N�MBER <br /> pF [1 u� <br /> . L�IfGtN ._J�v. ` � <br /> . `C- <br /> Figure E-lg <br /> �. <br /> �.�.�- 7 a�� ' ��-- � � S. o-�, 3 ��a�,- <br /> . . � �-� �� � <br />