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  1. #1
    Clay White's Avatar
    Clay White Guest

  2. #2
    Join Date
    Mar 2007
    Location
    Dallas, Texas
    Posts
    4,112

    Default Re: Stair riser & nosing

    Yes. I measure from horizontal tread surface to horizontal tread surface. Your feet and natural rhythm will traversing stairs don't care what causes the height difference.

    Jim Luttrall
    www.MrInspector.net
    Dallas, Texas

  3. #3
    Join Date
    Mar 2007
    Location
    Connecticut
    Posts
    1,822

    Default Re: Stair riser & nosing

    Those are laminate stairs correct? I have seen these many times and always indicate the trip hazard present which is the cap at the nosing. This is a very bad design and should not be allowed.


  4. #4
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    25,318

    Default Re: Stair riser & nosing

    Quote Originally Posted by Clay White View Post
    With the nosing, the riser height at the nosing measured 7 7/8". The riser itself is 7 3/4". Does this noising make it a violation of the 7 3/4" rule?
    Quote Originally Posted by Jim Luttrall View Post
    Yes. I measure from horizontal tread surface to horizontal tread surface. Your feet and natural rhythm will traversing stairs don't care what causes the height difference.
    Actually the answer is 'yes and no'.

    "Riser Height" is measured from the horizontal at one nosing vertically to the horizontal at the next riser (up or down), not tread to top of riser.

    How is this different?

    Because, as Wayne pointed out, those nosings for laminate (and many for wood) flooring have an actual thickness which is greater than the thickness of the tread flooring itself, creating a trip and fall hazard (which needs to be written up).

    Now, assuming that Clay's "The riser itself is 7 3/4" refers to the tread-to-tread or nosing-to-nosing dimension, then the "rise" ("riser height") of the stair is correct (not greater than 7 3/4"), however, the raised nosing creates a trip and fall hazard, but not a "riser" problem per se. When walking down the stairs, as Jim said, your feet will find the rhythm of the stairs, tread-to-tread, and the only time that riser will come into play is when you trip over it.

    Also, what is the tread depth? The width of the stair?

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

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