Shower stall

Discussion in 'Shower & Bathtub Forum & Blog' started by vinci, Feb 25, 2006.

  1. vinci

    vinci New Member

    Joined:
    Feb 25, 2006
    Several years ago I removed a shower stall in my basement bathroom. I replaced it with a sink and used the same drain hole from the shower for the sink. The drain hole is embedded in the cement floor. Does the shower stall need a trap under the cement for the drain? I don't know if there was one when the original shower stall was installed. Is it necessary to have a trap installed? Can the stall be install without a trap?
     
    Last edited: Feb 25, 2006
  2. jimbo

    jimbo Plumber

    Joined:
    Aug 31, 2004
    Location:
    San Diego
    A shower MUST have a trap. Otherwise, you get sewer gas in the house. There is probably a trap where you removed the shower before.
     
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  4. Gary Swart

    Gary Swart In the Trades

    Joined:
    Sep 1, 2004
    Location:
    Yakima WA
    Once you remove all of the sink drain and get down to the old shower drain, you should be able to tell for sure that there is a trap. It should be straight down so you if you shine a flashlight into the pipe, you should be able to see water standing in the trap. The only reason there might not be a trap is if the installation of the original shower was done by a DIYer that didn't know any better. My dad had such an arrangment in a shower stall in his basement. There was a constant sewer gas smell, and when I pull the old stall out and check, sure enough, no trap! There is one rule in plumbing that never changes. Every fixture must have a trap or there will be sewer gas. The toilet has its own trap built in, basement showers and floor drains are nonaccessabe, usually under the concrete, and all other drains are the familiar P shaped assemblies directly under the fixture.
     
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