Basement washing machine standpipe

[Joseph Skoler]

Does this look okay for a basement washing machine standpipe?

 

[Joseph Skoler]

I will also be installing a utility sink with pump and I'm not clear on whether the pump should empty into the standpipe or be plumbed in with fittings.

 

[Sponsor]

 

[Joseph Skoler]

What I mean is: Should I put a san tee in this drain line to plumb the output of the sink drain pump into?

 

[wwhitney]

Does this look okay for a basement washing machine standpipe?

The minimum standpipe height is 18" above the trap weir, do you have that much? The trap weir is the height at which water starts spilling out of the trap on the downstream side.

https://up.codes/viewer/new_york/ny-plumbing-code-2020/chapter/8/indirect-special-waste#802.4.3

As to the sink pump, not sure what the answer is, whether that vertical is a reasonable place to tie into, and if so whether a wye or a san-tee would be preferable (although I suspect a wye would be). What make and model of pump?

Cheers, Wayne

 

[Joseph Skoler]

The minimum standpipe height is 18" above the trap weir, do you have that much? The trap weir is the height at which water starts spilling out of the trap on the downstream side.

https://up.codes/viewer/new_york/ny-plumbing-code-2020/chapter/8/indirect-special-waste#802.4.3

As to the sink pump, not sure what the answer is, whether that vertical is a reasonable place to tie into, and if so whether a wye or a san-tee would be preferable (although I suspect a wye would be). What make and model of pump?

Cheers, Wayne

I did find the 18" above trap weir minimum requirement. Would 24" (or any longer amount) be better?

Not sure how to determine if plumbing the pump directly into a tee (or wye) or via an open air gap into the same open standpipe as the washing machine drains would be better?

The pump is the "Simer 2925B Self-Contained Above-Floor Corrosion-Resistant Sump/Laundry Sink Pump"

Thank you!