laundry renovation washing machine standpipe redo?

dgeistJune 3, 2012

I have a 1960s home with cast iron drains and the laundry room on slab. The current standpipe to the washing machine box has no (visible) trap or vent in the wall, for at least 4 feet on either side. The pipe itself is either 2" or 2.5" and goes straight down into the slab. It MAY be tied into a lavatory drain vent in an adjacent half-bath (but that's at least 4' away).

I know adding a vent wouldn't hurt, but I want to do it on the proper side of a trap, and I don't know if I even HAVE a trap. How can I identify/locate a trap in a slab, or is that most easily done with a plumbing video scope?

Dan

Thank you for reporting this comment. Undo
hendricus

A washer on a string, lower it down and see if you hit water. A vent goes in after the trap. The order is sink/standpipe, trap, vent.

    Bookmark   June 3, 2012 at 6:21PM
Sign Up to comment
More Discussions
Waste pipe uneven elbow leak
The gaskets are removed to show the situation in the...
rubyhum
LaToscana Novello Thermostatic Shower Valve
Trouble with LaToscana Novello Shower Valve- no hot...
bathroomblues1
patentened iron removal/air filox all in one 1k?
anyone seen or tried or have a opinion on this? http://www.amazon.com/gp/product/B004FVZHLC/ref=pe_54960_133354970_em_1p_0_ti#customerReviews Product...
Mike Maruska
the dreaded frozen pipes...
Hello all, I hope someone out there can help me. I...
kineala
Yes or No to Easy Water (no-salt) water softener?
I started this thread to reply to Sam because the prior...
peoplelover
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™