Drain height code for curbless showers

Discussion in 'Shower & Bathtub Forum & Blog' started by gsr, Sep 22, 2013.

  1. gsr

    gsr New Member

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    Hawaii
    Hello all,

    There is a thread over at John Bridge Ceramic Tile Forum(s): http://www.johnbridge.com/vbulletin/showthread.php?t=109275 discussing code for curbless shower drains. Tilers are having questions about inspections of curbless installs including trench drains.

    I'm curious what the purpose of the 2" height code is. Does it address flooding issues, or sewer back ups or ...?

    Thanks.
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

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    Since you might step on the drain, or drop a washcloth, you may not notice the water accumulating...they want there to be at least some basin there to let the water accumulate before it runs out...2" may be arbitrary, but that's what it is. Especially when you've got a curbless design, you don't want it running out of the room or at least out of the waterproofed area. Sometimes, the safer route is to have a secondary linear drain so it can't go out the door.
  3. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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    2" Drain height drop " Whipple vs Bridge "

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  4. John Bridge

    John Bridge Mudmeister

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    Really. Tell us exactly how many. And while you're at it, tell us how and when you got into the tile contracting business. No, tell the others. I won't check back. :)
  5. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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    First Curbless Shower

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  6. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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  7. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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    Marble Shower - Wet Room

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  8. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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    Barrier Free Showers without 2" drop 2012

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  9. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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    2011 - Neo Angle Entry Curbless Drop in height 3/4"

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  10. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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  11. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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    Curbless Showers - Vancouver

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  12. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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  13. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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  14. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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  15. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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    Another Condo Curbless

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  16. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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    Still More Shots. No 2" drop

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  17. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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    Does this count? - Curbless Second Story Laundry Closet

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  18. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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  19. gsr

    gsr New Member

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    Thanks for the replies Jim and John. I was hoping there was some logical/scientific reason for the (alleged) 2 inches.

    That's beautiful work John, I'm glad your B.C. inspectors are cooperative.
  20. johnfrwhipple

    johnfrwhipple Bathroom Design & Build - North Vancouver, B.C.

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    Hawaii Curbless Showers (No-Step) - By Design Builders www.bydesignmaui.com

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