I have a project and I am unsure how to approach this. We are trying to tie in a bathtub/shower combo, a sink and a washing machine together. There is a trap from the sewer line and then a Y piece which goes up to the tub drain and the Y to the rear for the sink and the Washing machine, That line is uphill to a Y first the Y to a 32” pipe for the washing machine drain and the straight line for the sink drain. I have a few pictures hope they help what do I need to do? Do I need another trap or is that one good enough because it is all going to that one spot. It is all dry fit now and needs to be done by tomorrow night, 24 hours from now. Please help! Oh and Last I have to get one different piece because the tub drain is about 5-6” too high.

Before we can make sense out of this we need pictures about what you're trying to tell us. I can, however, tell you this. Every fixture needs its own trap and every fixture that has a trap MUST be vented. Regards, Tomn