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Spirock · Oct 18, 2007, 10:27 AM

I have a laundry room and a bedroom side by side at the front of the house. I have made a bump out addition to these rooms.

I want to move the sink, washer and the dryer from the existing laundry room into the bedroom making it the new laundry room.

Can I run approximately 22 feet of new drain pipe to the new area from the existing vented drain at the right slope of 1/4 inch per foot with 2 90 degree turns.

If so should I increase the pipe size?

Being the existing drain is also venting straight up through the roof,could I also just vent the new sink and washing machine into the new drain ?

See asterisks on drawing. I would even more so like to put the wash machine and sink where the askerisks are but that distance is approximately 35 feet with 2 90 degree turns. Is that possible?

Thank you.

speedball1 · Oct 18, 2007, 12:35 PM

Can I run approximately 22 feet of new drain pipe to the new area from the existing vented drain at the right slope of 1/4 inch per foot with 2 90 degree turns.
If so should I increase the pipe size?

You may run your drain line providing you vent both the utility sink and the washer stand pipe unless you're planing on discharging the washer into the sink. The drain pipe should be no less then two inches. More about the two 90's later

Being the existing drain is also venting straight up through the roof,could I also just vent the new sink and washing machine into the new drain ?

Say what?? Idon't see any vent on either the sink or the washer. If you're using the floor drain vent to vent the washer and sink you have a illegal set up that's using "S" traps on the sink and washer. Both the sink and the washer will have to be vented through the roof or revented back into a dry vent. You may connect the two vents and revent back into the floor drain vent if it's dry from the floor drain up through the roof. You may not wet vent the two back into the drain line.

See asterisks on drawing. I would even more so like to put the wash machine and sink where the askerisks are but that distance is approximately 35 feet with 2 90 degree turns. Is that possible?

Yes it's possible but not very good practice to place 90's in a washer drain line. I would rather you placed the fixtures in line with the drain line but if you must use bends make them sweeps and add a cleanout tee on the end of the drain line.
Good luck, Tom

Spirock · Oct 22, 2007, 06:02 PM

Originally Posted by speedball1

You may run your drain line providing you vent both the utility sink and the washer stand pipe unless you're planing on discharging the washer into the sink. The drain pipe should be no less then two inches. More about the two 90's later

Say what??? Idon't see any vent on either the sink or the washer. If you're using the floor drain vent to vent the washer and sink you have a illegal set up that's using "S" traps on the sink and washer. Both the sink and the washer will have to be vented through the roof or revented back into a dry vent. You may connect the two vents and revent back into the floor drain vent if it's dry from the floor drain up through the roof. You may not wet vent the two back into the drain line.
Yes it's possible but not very good practice to place 90's in a washer drain line. I would rather you placed the fixtures in line with the drain line but if you must use bends make them sweeps and add a cleanout tee on the end of the drain line.
Good luck, Tom

Hi again Speedball... Thanks so much for your help. You helped me once before about a year ago with a kitchen plumbing problem, and every thing went well.

The information for above was excellent but I have decided to stay in the existing laundry room due to the furnace room also being in the room I wanted to move it to which presented other problems with dryer vents, and furnace exhausts causing backdrafts and carbon monoxide.

I have a feeling I will be needing your help when I get a little deeper into the changes I will be making in the existing laundry room.

Your help is so very much appreciated, which I can see is in great numbers by all the people you have helped. My son asked why you give all this great experience away and I told him it was probably because lots of homeowners were going to do it anyway ,and that you no doubt would rather see them doing it the right way.

Thanks again, you are so much appreciated.

Bob