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Vertical vessels post installed adhesive anchors

  • 1.  Vertical vessels post installed adhesive anchors

    Posted 08-03-2019 10:35 AM
    Is it unsafe to use post installed adhesive anchors to anchor a 35 foot tall vertical vessel to an existing 16" thick concrete slab.  I plan to add a 7 ft. sq.x 6" thick pedestal to the slab to make it 22" thick and use 1 1/5" bolts with 18" embedment.  The calculations say it will work but I have heard that it is not wise to use post installed anchors on vertical vessels.

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    Orin Ortego P.E.,M.ASCE
    Lake Charles LA
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  • 2.  RE: Vertical vessels post installed adhesive anchors

    Posted 08-17-2019 11:23 PM
    Dear Orin, depending on the vessel's weight and possible failure by tension on anchors, I suggest you go deep on the slab and reconfigure a pedestal reinforcement distribution including pre-installed anchors and then, cast concrete. Concrete compatibility is best to accomplish rather than adhesive under tensile loads.
    Regards, AG

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    Andres Guzman Ing., M.ASCE
    Associate Professor
    UNIVERSIDAD DEL NORTE
    Barranquilla
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