My bathroom is 5' w x 6.6" l. I will be moving the toilet over 1 ft. to bring in a soaker tub and the sink 6" from the toilet. The wall will be moved out 2'.
The toilet now is 2" from the tub. My joists run the same as the width. The contractor saids when the toilet is moved the joists have to be cut for the flange to fit. I have seen pictures ofthe flange and it sits between the joists. Joists run 16" apart. Why cut the joists. Can anyone explain or is this wrong. The wall will be moved 2' to accommodate the moving of the sink and the toilet. Thanks for your help.

You don't cut ceiling joists... you drill through them - if needed. They sell dripp bits that cut exactly the hole you need. No guessing here.

Please post drawing of your situation and we will be more than helpful to offer our advice... Thank you... Milo

:););););)
You don't cut ceiling joists...you drill through them - if needed. They sell dripp bits that cut exactly the hole you need. No guessing here.

Please post drawing of your situation and we will be more than helpful to offer our advice...Thank you....Milo

MILO: When moving the toilet can you run the ABS pipe from the stack, under the joist,up the other side to the toilet. Would there be enough force when you flush to dispose of the waste. This bathroom is on the third floor, so to accommodate the pipe a bulkhead may have to be built to enclose this pipe. Wouldn't drilling through the joist make too big a hole for the pipe ( 3") and weaken the joist. Sorry no pictures, can't upload them.

can you run the ABS pipe from the stack, under the joist,up the other side to the toilet

Yes, you can drop down under the joists.

This bathroom is on the third floor, so to accommodate the pipe a bulkhead may have to be built to enclose
Yes, you will have to install a dropped ceiling to enclose the ABS,

Wouldn't drilling through the joist make too big a hole for the pipe ( 3") and weaken the joist The answer's yes if you have 2 X 6" joists.
Good luck, Tom

Looks like Tom answered your question. If your joists are less then 2"x 10" then you should not drill through them.

My bathroom is 5' w x 6.6" l. I will be moving the toilet over 1 ft. to bring in a soaker tub and the sink 6" from the toilet. The wall will be moved out 2'.
The toilet now is 2" from the tub. My joists run the same as the width. The contractor saids when the toilet is moved the joists have to be cut for the flange to fit. I have seen pictures ofthe flange and it sits between the joists. Joists run 16" apart. Why cut the joists. Can anyone explain or is this wrong. The wall will be moved 2' to accomodate the moving of the sink and the toilet. Thanks for your help.

If we're talking only one joist that happens to be centered on the new WC location or that is too close to make the initial bend, then a competent Carpenter should be able to head the joist off w/out compromising structural integrity.

By code you should be able to drill a 3" hole in a 2x10. Quoting Mdskunk from another site "The hole may be no more than 1/3 the actual measured depth of the joist. Figuring that your 2x10 is about 9-1/4 inches deep, you can drill up to a 3 inch hole (WOW!) The hole must have it's edge at least two inches from the bottom or top of the joist, in accordance with IRC R508.2. If the edge of any of their drilled holes ends up closer than 2" to the bottom or top of the joist, they've not only got some 'splaining to do, they owe you a pile of cash. Those holes are also not permitted to be any closer than 2" to any other hole or notch. IF they decided to do two 1" holes, they need to be at least 2" apart (nearest edges, not center to center) in accordance with R508.2.1. " However, did you ever tell us the size of your joist?

By code you should be able to drill a 3" hole in a 2x10. Quoting Mdskunk from another site. . . . .

I just wrapped up a 5 bath house on the East Side where 4 of the 5 W/C's centered on 2"x12" TJI's, all 5 showers centered on TJI's and 6 of the wet walls (including the laundry room) centered on TJI's.

I guess the day and a half I spent laying things out with the Framing contractor before he rolled out the floor joists was a waste of time, eh?

Long story short, the Cabinet maker will have to install taller toe-kicks on all of the vanities and laundry cabinets to accommodate for the offsets that were rolled out of the wall on all of the sink drains, all of the showers lost 3 inches of depth in order to center the mud-set shower drains and all but one of the WC's had to be flat-vented.

Basically the only thing that went our way was the homeowners decision to spec out Toto Guinevere one piece WC's for all five baths.

We'll have to special order 2 10" and 2 14" Toto Unifit floor flanges to accommodate the rough-ins, but at least we had that as an option.