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  1. #1
    Rich Lee's Avatar
    Rich Lee Guest

    Default Stair tread width, interior freestanding stairway

    So I've read the posts about all the variables concerning "stairway" width. They all seem to give answers with respect to distances to adjoining walls.
    I have a free-standing interior stairway -- two handrails with balusters attached to the stairway only, no walls involved at all.
    All the treads are 36 inches wide at the base of the balusters. The balusters are outside the top and bottom rails, which project in maybe 1-1/2 inches on each side, or 3 inches total.
    I saw one response that said "27 inches handrail to handrail" is okay. Does this mean I can cut the treads to 27 inches wide (or 30 inches to account for the rails) in this situation?
    I live in Rhode Island if that matters.

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  2. #2
    Join Date
    Aug 2009
    Location
    Michigan
    Posts
    249

    Default Re: Stair tread width, interior freestanding stairway

    Quote Originally Posted by Rich Lee View Post
    So I've read the posts about all the variables concerning "stairway" width. They all seem to give answers with respect to distances to adjoining walls.
    I have a free-standing interior stairway -- two handrails with balusters attached to the stairway only, no walls involved at all.
    All the treads are 36 inches wide at the base of the balusters. The balusters are outside the top and bottom rails, which project in maybe 1-1/2 inches on each side, or 3 inches total.
    I saw one response that said "27 inches handrail to handrail" is okay. Does this mean I can cut the treads to 27 inches wide (or 30 inches to account for the rails) in this situation?
    I live in Rhode Island if that matters.
    Minimum tread width is still 36" you can't have treads 30" wide...

    Randy Gordon, construction
    Michigan Building Inspector/Plan Reviewer

  3. #3
    Join Date
    Mar 2007
    Location
    Plano, Texas
    Posts
    4,170

    Default Re: Stair tread width, interior freestanding stairway

    IRC2006_StairwayVisual.pdf

    The link that Nolan posted on another thread tells it all.

    Jim Luttrall
    www.MrInspector.net
    Plano, Texas

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