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Thread: Twisted girder

  1. #1
    Join Date
    Aug 2009
    Location
    Raleigh
    Posts
    117

    Default Twisted girder

    This is on a 5 year old house still under builder's structural warranty. Girder is leaning on this end, then straightens after about 4', then twists slightly the opposite direction at the other end (total girder length is about 14').

    Builder wrote a letter stating, "Because the floor system above the girder is a sheer plane, the loads imposed on the beam are not compromised. The slight twist of the beam has very little if any affect on its structural integrity. No repair is needed."

    I would think that the downward load from the joists would promote additional leaning if the whole girder was leaning. Since only part of it is leaning, the load on the remaining area would help stabilize.

    But I wanted to get thoughts from others to see if the consensus is that this is not a big deal as builder states.

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  2. #2
    Join Date
    Mar 2007
    Location
    Orlando, FL
    Posts
    1,476

    Default Re: Twisted girder

    I can't comment on "sheer plane" but the beam looks like it's just sitting there, no attachment to the framing or to the pier.

    (I would think the builder would defer this to an engineer, and they would write a letter...)


  3. #3
    Join Date
    Sep 2009
    Location
    Rolla, MO
    Posts
    132

    Default Re: Twisted girder

    I would suggest adding some lateral support. The more the beam leans the weaker it gets.

    - - - Updated - - -

    I would suggest adding some lateral support. The more the beam leans the weaker it gets.

    Randy Mayo, P.E.
    Residential Engineering & Inspection Services
    http://www.rlmengineers.com

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