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  1. #1
    Join Date
    Feb 2008
    Location
    Chicago IL
    Posts
    1,984

    Default foundation vertical rebar spacing

    Hi guys, does anyone have a reference for vertical rebar spacing protruding up from the foundation wall into the CMU during the first few courses. I usually see 24" oc or 48" oc on most plans. One page on current plan seems to show 16"oc, another page detail shows 24" oc. Plan doesn't match on many details. Builder has the rebar installed unevenly all over the place, spread between rebar is anywhere between 55"-80". I can't remember seeing that wide and uneven spread on any other builds.
    I did the ground CI today and emailed client report tonight. I know this will be an issue come Monday. Along with the 2x4's supporting the cast sewer line, uneven spray-on foam insulation and on and on.
    Thanks for any help, Markus

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  2. #2
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,243

    Default Re: foundation vertical rebar spacing

    Basically, rule of thumb:

    - at each corner

    - at each opening, one on each side of opening

    - every 48" (unless specified otherwise - which is the part not right on your plans; with plans, the drawings are considered 'general in nature', when there is a conflict between the drawings and a detail, the detail rules; when there is a conflict between the drawings and a section, the section rules; when there is a conflict between the drawings and the specifications, the specifications rule; that said, if the drawings are *more restrictive* than the detail, I would use the most restrictive - let the builder provide back up for using the less restrictive; that is when an RFI - Request For Information - is sent out to the architect or engineer, they respond with which they want, and that RFI now becomes the ruling specification

    - additionally, one under each load bearing point for girder trusses

    All the above are 'typical' 'rule of thumb', which pales in comparison to the real plans, drawings, details, sections, RFIs, etc., for that project.

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

  3. #3
    Join Date
    Feb 2008
    Location
    Chicago IL
    Posts
    1,984

    Default Re: foundation vertical rebar spacing

    Thanks for the info Jerry. It should be interesting come Monday/Tuesday. GC already hates me for telling him "the keyway is one of the worst I've seen in years".

    www.aic-chicago.com
    773/844-4AIC
    "The Code is not a ceiling to reach but a floor to work up from"

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