Room Needed for Bathtub Drain

[tonyn1]

I'm planning on installing a bathtub on a second floor addition I'm adding to my house. I have 10" joists up there. Is there going to be enough room to put a bathtub drain and trap underneath this? I can't go directly down either, and must do a 90 over to where I can connect to the main drain down. Would a P-trap be allowable here? Should I leave some kind of access point to this area?

 

[Terry]

There is plenty of room with 2x10 floor joists for the plumbing, p-trap and tub drain.

 

[Sponsor]

 

[tonyn1]

So a P-trap is allowable? I don't think an S-trap would fit in there unless I was going directly down. How about leaving access to it?

 

[Terry]

You can't use an S trap, you must use a p-trap.

 

[tonyn1]

Does it have to remain accessible?

 

[Terry]

Does it have to remain accessible?​

No. Once the tub drain is installed, you can cover.

 

[tonyn1]

Thank you.

 

[Kreemoweet]

"Fixtures having concealed slip joint connections shall be provided with an access panel or utility space ...
so as to make such connections readily accessible for inspections and repair." (From the Uniform Plumbing Code).
Unless your waste & overflow has "glued" pipe connections only, access is required, unless things have changed recently. Lots of people
ignore this requirement, and lots of people seriously regret that decision later on.

 

[tonyn1]

Good point. I will be using glued connections.