I am installing a bathtub in our basment and have broken up the floor for the tub drain.
The 2" drain line will run 30", make a 90 degree turn and then run 5' over to the vented drain pipe.
Do I need to install a vent closer to the drain of the tub itself. The books say that for a 2" pipe, you should be no more than 5' away from a drain, so my distance of 7.5' is more than the spec, but not very much.
And if I do need to vent closer. There is a horizontally running vent pipe in the ceiling above this tub. Can I go up the wall next to the tub and connect into this?