Hello all I need help understandig how to complete this project correctly. In the picture you can notice some lines . the white is the actual kitchen sink/wasing machine drain . My question is, what is the correct way to add an extra drain on the extrnal wall (red Line). any help is very much appriciated .
so these are few more picture i think will help. the white pipe already in place is the condensate pipe of the boiler and goes in the gravel as you can see. in the meantime I have been told to drill a hole on the side of the chamber, for a 40mm waste pipe. because the only thing that will pass in the pipe is soapy water at most, the fall i have to give is not that much. then fit an elbow & a downpipe to almost reach the bottom of the MAC, that is to avoid any splashing noise.
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