I am looking to add a stall shower to an existing half bath. Over a slab... I have never done this before and considering doing it myself... I can sweat pipe and can do basic carpentry... I know I need to jackhammer the floor remove and tap into the toilet line... are there any special concerns that I need to be aware of.. . some questions I had were
1. do I need to add a vent ( shower will be within five feet of toilet) and next to the toilet there is a vent going up through the roof
2. I am assuming I will add a "Y" of some sort to the toilet... and how is this connection done... thanks in advance for your help
Greg

I am looking to add a stall shower to an existing half bath. over a slab.....I have never done this before and considering doing it myself....I can sweat pipe and can do basic carpentry..... I know I need to jackhammer the floor remove and tap into the toilet line..... are there any special concerns that I need to be aware of.... ...some questions I had were
1. do I need to add a vent ( shower will be within five feet of toilet) and next to the toilet there is a vent going up thru the roof
2. I am assuming I will add a "Y" of some sort to the toilet... and how is this connection done...thanks in advance for your help
Greg

Good morning Greg,

1. do I need to add a vent ( shower will be within five feet of toilet) and next to the toilet there is a vent going up through the roof
Code forbids you to discharge a major fixture, (such as a toilet) past a unvented minor one, (such as your shower) You MUST do one of two things.
If you tie into the toilet main you must run a individual vent for the shower, or, you can tie the vent into the lavatory drain and the shower will wet vent through the lavatory vent.

2. I am assuming I will add a "Y" of some sort to the toilet... and how is this connection done...
Since you haven't told me what material your pipes are I can't give you specific instructions on how to tie it in as different pipes will use different methods and I haven't a set of plans to lay out the job so I can't be specific as to what fittings to use, however you will cut in a Wye or combination wye and eighth bend to the lavatory drain line to pick up the shower.

Good luck, Tom