How do you put a p trap on a bathtub drain line

Depends greatly on what type of home/foundation you have. You would use access to under side of the tub.

The trap installs directly under the tee that connects the drain to the overflow,(see image) What do you have now and why are you asking? Regards, Tom

I'm fixing to plumb in a tub and I wanted it to be up to code and your diaagram confirms what I thought was right so thank you

Good luck and if there's a problem click on back and tell me about iyt

OK thank you