Could someone help me identify the pipes for my rough in basement bathroom? Im pretty sure the larger (1) is for the toilet but I’m not sure what the other two are for. Is the large black top (4) for a pump to push waste out to my sewage line? Also, where would I frame the walls?

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    #4 is most likely an ejector pit. If you remove the lid you'll probably see a pipe coming from the direction of #1. #2 and #3 are probably for the sink and shower. As far as framing you should start another question. Do a drawing with measurements between the pipes and any obstructions. Feb 5 at 14:11


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