2015-00909 - new/replacement septic system

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SECTION 11: Distribution of Effluent ■ � � -25 � � . for inspection a��d mainrenance. IF the installer de�ermines chat any such de�•icc should bc added co a sys�em, che affect on pump performance must be usessed. According to MN Rules Chapter 7080.Z050, Subp. 4 (H), prcssure disvibucion lat- erals must be connccted to a header or manifold pipe that is of a diameter such that • thc friction loss in the hcadcr. or manifold will be no grcatcr than fivc perccnt of the avrragc head ac the orifices. Thc manifold conneccs che latcrals and discribucu the sepcic �ank effluenc �o each laceral. ManiFolds and suPply pipcs arc usually PVC pipe v�•ich appropriatc 'L' or'T' fittings.Thc manifold pipe should be conncctcd to che supply pipe from the pump, and slopcd toward the supply pipe. The manifold should be cMe samc diameter as the supply pipc.The siu and position oF�hc manifold and main will vary for cach pressure distribution sys�em. Depending on the sice conditions and the design oF the pressure distribution sys�cm, �he manifold may be run along one end or down the cen�er of the distribucion syscem. See Figure 1 1.18 for an end manifold and Figure 1 1.19 for a centcr manifold connec�ion.The benefit of a cencer manifold is thac it allows more orifices per laceral whilc maincaining the � required minimum fric�ion loss. ., � � � �e manifold pipe` x �� 7 fa � �a � � � �50� U ��9.�- �-�-� �3� � !� - J pipe from pump x �� 3 � � �o�� �`� v� � � �'�'� ,� clean outs �'P "- �-�-'r'`"" ♦ • � . • alternate location of pipe from pump � � - Cleanouu �- -''� . .' �' � �' �� Manifold pipe� ' � � i� i I ' � � � �Alternate�aation ' • of Mi�from pump ...� Pipe from p�mp ' �Y . . . r W� ... ...-. _... �. �.