Ron Coleman
New Member
I planning a laundry room redo and looking for some ideas on draining a new laundry sink and the washer. Currently the laundry tub and washer drain into a floor drain that doesn't have the capacity for large volumes of water without making a small lake on the floor. The drain is clean but the static water level in the trap is just 3 inches below the floor. The plan is to move the sink and washer to another wall and change the plumbing as needed.
Before I start busting up the floor I'm trying to get an idea what I'm going to find. The floor drain appears to be just a cast iron trap with concrete formed into a hole around it, nothing fancy. Near the floor drain is the main house drain (cast iron) which exits the house about 8 feet away. My thinking is that the floor drain joins the main drain just a foot or two away from the hole.
The plan is to cut the floor and remove the old trap where it joins the main, then extend this branch about 8 feet to the new location. I'll replace the floor drain in the process. At the new location I'll bring the drain up the wall, add a stand pipe and trap for the washer and a branch and trap for the sink. To vent the new line, the current plan is to extend the line up the wall and return to the main drain where I can tie into a 2 inch vent that comes off the drain of a first floor toilet (typical two story house with first and second floor toilets, about 75 years old).
An alternate plan would be to run a new drain line along the wall to a cleanout wye in the main stack and vent to the line as above. This would be the easy way out but I'm getting short on elevation for the sink drain and slope. The center of the wye is about 12" off the floor and the bottom of the new sink will be at about 22", getting a little too close for comfort.
I'll probably use 2" pvc for the whole project. Any ideas and suggestions as to what what I might find under the floor would be appreciated.
Ron
Before I start busting up the floor I'm trying to get an idea what I'm going to find. The floor drain appears to be just a cast iron trap with concrete formed into a hole around it, nothing fancy. Near the floor drain is the main house drain (cast iron) which exits the house about 8 feet away. My thinking is that the floor drain joins the main drain just a foot or two away from the hole.
The plan is to cut the floor and remove the old trap where it joins the main, then extend this branch about 8 feet to the new location. I'll replace the floor drain in the process. At the new location I'll bring the drain up the wall, add a stand pipe and trap for the washer and a branch and trap for the sink. To vent the new line, the current plan is to extend the line up the wall and return to the main drain where I can tie into a 2 inch vent that comes off the drain of a first floor toilet (typical two story house with first and second floor toilets, about 75 years old).
An alternate plan would be to run a new drain line along the wall to a cleanout wye in the main stack and vent to the line as above. This would be the easy way out but I'm getting short on elevation for the sink drain and slope. The center of the wye is about 12" off the floor and the bottom of the new sink will be at about 22", getting a little too close for comfort.
I'll probably use 2" pvc for the whole project. Any ideas and suggestions as to what what I might find under the floor would be appreciated.
Ron
