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Masonry piers for exterior walls

Discussion in 'Residential Foundation Codes' started by Flexo, Apr 21, 2019.

  1. Flexo

    Flexo Registered User

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    The 2012 IRC R404.1.9.2, indicates that masonry piers may support girders that carry exterior walls. R404.1.9.3 states that masonry piers supporting braced wall panels must be engineered. R404.10.9(2) reiterates the need for engineered design when braced wall panels are supported with pier foundations. I asked an engineer if a braced wall line could be built on a girder supported by masonry piers without an engineered design, (in light of the verbiage at R404.1.9.3). He stated that this was acceptable since the piers are supporting a girder not braced wall panels, the braced wall line sits on the girder. I have a co-worker who would require engineering. How would you proceed with this? Is an engineered design required? The proposed construction is in seismic design category B.
     
  2. mp25

    mp25 Registered User

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    Ultimately the lateral loads have to end up going into the foundation - so they get transferred from the braced wall panels into the floor... and the floor is connected to the masonry piers. I don't think the code provides a method of attachment between the two for the given condition. I would agree with your coworker - and interpret it as engineered design required. I think the code section you stated is pretty clear.
     
    jar546 likes this.

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