Utility sink drain

[Rmdrent]

Want to put utility sink in garage. What is the minimum distance above the main 3" drain line do I need. I don't know if I will have enough drop below the sink after the trap...
Thanks...

[johnjh2o]

If your asking what height of the floor the drain has to be, that depends on the sink your using. This is the most common one used and we rough the drain at 12" off the finish floor.

E. L. Mustee & Sons - 12 UTILATUB® Floor Mount Laundry/Utility Tubs ? Economy ? Extra Narrow

John

[Rmdrent]

3" main is on other side of concrete wall about 12-18" below the floor of the garage ( where I want the sink). Need to know if I can tie in to the main with trap bottom about 12" above the 3" main... I haven't measured this exactly yet... Just want to find out what the min height I would need...

[Rmdrent]

Originally Posted by Rmdrent

3" main is on other side of concrete wall about 12-18" below the floor of the garage ( where I want the sink). Need to know if I can tie in to the main with trap bottom about 12" above the 3" main... I haven't measured this exactly yet... Just want to find out what the min height I would need...

Attatched picture of basement wall.

[johnjh2o]

Bring the drain through 12" above the garage floor. You do realize that you will also need a vent on the new line.

John

[Rmdrent]

Yes, I will tie into an existing vent line on the first floor or run a new vent line out the side of the house...just not sure if I should tie the new drain into the vertical stack in the picture or bring it down and tie in horizontal extending that flush out?
Obviously I am not a plumber...but have had years of success trying.... so far...
just dont want to screw anything up on this one since it is my mother-in laws new home...

[johnjh2o]

Use a Y and 45 on the vertical line.

John