Basement Bathroom Rough In
Hello I am working on putting a bathroom in my basement. I have already run the supply lines for the toilet, sink and shower. My question is I am now working on the drains and there is a knock out in the floor with a 1 and 1/2 in line in the floor below what should be the shower/tub. I don't see a p trap but would it be usual for the p trap to be already below the grade in the concrete. I am not sure I will have enough room for a p trap below the shower so I am hoping it is already there. Is there a quick way to check? I can't get my head in there to look down the pipe with a light.
Also we are putting in a pedestal sink and would like to use a chrome p trap. The only chrome ones I could find were 1 and 1/4. I have the connector to go from the metal chrome to 1 and 1/2 PVC in the wall but what is the typical size of drains. Will they fit into the trap and just screw in?
Thanks
I can post pix if needed.