I'm wondering if anyone can help me id some rough plumbing. This is a basement bathroom rough in a 2009 New Hampshire house. I believe it was supposed to be roughed in for a toilet, single vanity and a shower. Judging by the distances from the wall and pipe sizes I'm guessing #1 is for a toilet (because it's 3 inch pipe and if the wall behind it was framed the center of the pipe would be 12 1/2 inches away), #4 is for a vanity and #5 is for a shower. #2 seems to be cover for a sewage pump. I have not found any roughed venting pipes in the ceiling so far.
What is the 3 inch pipe #3? The sewage pump cover says Zoeller 17-0276. Does it only fit Zoeller pumps or are these universal fit?
Thank you in advance for looking at my question.
**Edit 1 I did some homework and snaked the pipes except for #5 which i didnt want to cut as the cap is glued on and it's so short. It seems they're all connected (now drawn in red on the schematic) and going to the sewage pump pit. I can see #1 is a toilet rough in after taking the silver wrap off.