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Remodeling Bathroom, Need to move drains/vents
I am in the process of remodeling my bathroom. I am moving all fixtures, toilet, sinks, shower, and jaccuzi. It is on a concrete slab, which I have mostly tore up. I am looking for some help with vents and drains for my new project. I attached a PDF with my proposed fixture layout. I understand that the drain should drop 1/4" per foot. Because of the height of my main drain (It is buried in a footing, so I cannot shorten it), the top of my 3" ABS pipe to my toilet will be running in the concrete slab about 1/2 way, not under it. Is this going to cause a problem, or should I use less slope?
Any help is appreciated...
Copper splices under slab
Again Thanks for your help. I'm finishing up with laying the drain and ready to begin water supply lines. Is there any restrictions with splicing copper under slab and/or what needs to be ran?