Replies

1. 
   OneofmanyBobs | Jun 07, 2002 01:09am | #1

   Got to move the whole trap. Trap is a different

   size for a tub. Trap attaches differently to a tub.

   Need a well underneath. Got to jackhammer mucho slab.

   Hope the vent is close enough. Pitfalls are many.

   Not the best first-time amateur project. Need to remove

   a good 3 foot chunk of slab.

   Put a 55 gal drum in the shower and take a vertical bath.

1. 
   tab1 | Jun 07, 2002 08:23am | #2

   Aiii carumba! But thanks. I've done plenty of building--and a fair amount of plumbing--and don't consider myself an amateur, just nothing like this. Could you elaborate on that 3 foot 'well'?

   Thanks.

   Thon

1. 
   OneofmanyBobs | Jun 07, 2002 01:26pm | #3

   The well itself need only be big enough so you can

   attach the tailpiece of the tub drain. The drain

   with overflow tube sticks down about 6 inches from

   the bottom of the tub. Add another maybe 8 inches

   for the trap. If I need a hole underneath anyway,

   I'd probably not bury the trap in concrete and leave

   it accessible in the well. Obviously, the well must

   be accessible from the drain end of the tub when you

   remove an access panel. Otherwise, no way to connect

   the drain after the tub is set.

   Tub is 5 feet long. Shower is maybe 3 feet square.

   Assuming you add a foot to each end, the tub drain is

   about 2.5 feet from the current shower drain. Hence,

   you need about a 1 by 1 by 3 foot chunk of slab removed.

   If its covered by the tub, why fill it up again? Leave

   the joint with the original drain visible. Now, hope that

   the existing drain is not too close to the slab surface.

   If so, you'll not have enough clearance for the tub tailpiece.

   If its real deep, you'll have to trench deeper. The outlet

   of the trap must be at the same depth as the drain. Otherwise

   you have venting problems. So, all together you're looking at

   a well about 1 by 3 feet and from 1 to 3 feet deep, depending

   on how deep the drain line sits.

   Hope the existing shower

   has a vent in the right place. I think it has to be within

   6 feet of the tub drain for a wet vent. You'll have to check

   on that. If you can add your own vent, no problem. But,

   need to tie at least 6 inches higher than the highest fixture

   on that stack, which means somewhere on the second floor or

   go all the way to the roof. I don't think you're allowed to use

   one of those Studer vent things on a tub.

   Also, hope you don't have drainage

   issues or you might need a sump pump in there as well.

   The tub drain being probably the lowest fixture in your

   system, the tub will fill with you-know-what if there's

   ever a blockage in the main.

   Have fun.

1. 
   tab1 | Jun 09, 2002 05:40pm | #4

   EXACTLY what I needed! Many thanks for your time and assistance.

   Thon