Basement drain pipe layout questions

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lhgrappler

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Hi, we are getting ready to do the plumbing for a new bathroom and laundry room in our basement. The drain pipe runs almost right under where the shower drain, toilet, and utility sink will go. (see green line in pic)

Is it best to directly plumb each of these to the main waste line, or something else? Also, I believe we will have to do slip couplings because everything is fixed in place, wondering if that's correct?

Thanks
Open photo

 

Reach4

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Not right. You appear to be venting the tub horizontally.
One fix for that is to run the tub drain to a vertical vent before the piping continues to the right of your picture.
The other way is to route the vented lavatory to join the tub drain trap arm close enough. The lavatory drain line wet-vents the tub and then the toilet. You will have to pay attention to the pipe size below the lavatory santee.

Part of MO uses UPC, and most uses IPC.
 

Jeff H Young

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I cant tell exactly his plan just that this is how the main is there dosent show any fittings or vents. I think he can use that main
 

lhgrappler

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Not right. You appear to be venting the tub horizontally.
One fix for that is to run the tub drain to a vertical vent before the piping continues to the right of your picture.
The other way is to route the vented lavatory to join the tub drain trap arm close enough. The lavatory drain line wet-vents the tub and then the toilet. You will have to pay attention to the pipe size below the lavatory santee.

Part of MO uses UPC, and most uses IPC.
This drawing only shows the drain/waste pipe. It doesn't include any venting.
 

royalflush001

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Slip couplings are useful when making connections in tight spaces or when you can't access the pipes directly. They allow you to slide the coupling over one pipe, then slide it back to make the connection.
 
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