Can someone review my laundry room plumbing design?

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Old 04-21-17, 06:51 AM
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Can someone review my laundry room plumbing design?

Hi.
I've attached a sketch for a change to existing plumbing in the basement laundry room. Currently a waste line comes into the basement from the kitchen sink (with P-trap) and a vents up through the basement and eventually the roof. I am framing the laundry room, so in my redesign I am adding a washing machine box for hot/cold and waste. There is an existing laundry tub that we are keeping.

Can someone look at my sketch and offer suggestions/corrections?

Thanks.
 
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Old 04-21-17, 07:38 AM
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I don't know if anyone will trust that attachment. I won't
 
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Old 04-21-17, 07:57 AM
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That's interesting. Are responding from a responsibility-perspective? Just curious.
 
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Old 04-21-17, 08:14 AM
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Is there a trojan or virus in the attachment? Just curious.
 
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Old 04-21-17, 08:43 AM
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Here's the image:

Name:  basement_plumbing.png
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Size:  67.4 KB
 
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Old 04-21-17, 08:50 AM
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We'll need to know what diameter the various pipes are and what the distances between the fixtures and the drain and vent stacks.
 
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Old 04-21-17, 10:18 AM
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No, that's not going to be code compliant. You have a wet vent between the kitchen drain and washer box, and another where the laundry tub ties in.

Basically, your main stack needs to go from the drain to the vent. Each branch that ties into it needs its own vent. So you'll need to vent the washer box and laundry tub separately (if they connect to the main drain separately).

Do you have a layout of the laundry room? That might make helping design out the DWV plan a bit easier.
 
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Old 04-21-17, 12:14 PM
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Nope that drawing is all wrong.. You'll have trap siphoning issues.

Draw what you have now so I can guide you better.

If there is one line coming

Pictures help down from the upstairs sink you cannot use that line as a vent for downstairs fixtures..
 
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Old 04-21-17, 12:45 PM
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Thank you to all your replies and offers for help.

Attached is a diagram of the current plumbing. We have a 80+ year-old house, so there are details that I'm not too sure of.

Taking one of the comments to this thread and applying it to the current plumbing diagram, I can only guess that the kitchen sink drain is being vented close to that drain, since that line does straight to the waste. Would I be correct?
 
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