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Recent content by GSigma

  1. GSigma

    HILTI HIT HY-150 & CREEP

    After the I-90 tunnel in Boston and the NTSB report I am a little concerned using adhesive anchors when subjected to direct tension. Any tips or concerns will be appreciated. Thank you
  2. GSigma

    Appendix D for Round Piers

    Totally agree with Lion06. Just make sure the re-bar was designed for that load.
  3. GSigma

    High Strength J-Bolts

    Is there anything else besides ACI 318 Apendix D that I can use for tips or recommendations? The bolts will be in direct tension and shear and the pedestall edge distances are very limited. TY
  4. GSigma

    High Strength J-Bolts

    I need to design several surface mounted base plates to resist relatively large pull-out and shear forces. Due to spacing and edge distance limitations we are running out of options with regular expansion and epoxy anchors plus the contractor would like to use some type of embeded anchor. Any...
  5. GSigma

    Stresses on 90 degrees base elbows

    A 14 diamter pipe stub is welded all around on a 24" 90 degrees short radius elbow supporting the riser above. Is there a formula or procedure to determine the stresses on the 90 elbow without running FEA, etc.
  6. GSigma

    Modeling a bend plate (reinforcement) outside a cylindrical vesel

    I am not aware of that. Any link will be helpfull. Thanks
  7. GSigma

    Modeling a bend plate (reinforcement) outside a cylindrical vesel

    I am supporting a cylindrical vessel with a saddle. The perimeter of the bend plate of the saddle is welded to the vessel with intermitent welds. To properly size the saddle (angle and width, etc) I need to chek the local stresse at the interface with the vessel but I am not sure how to model...
  8. GSigma

    Pressure Vessel FEA analysis with STAAD

    Problem description: I am trying to check the local stresses at the supports of a round pressure vesell (120" diameter 5/8" thick)full of diesel using FEA with STAAD. Question: Any tips on how to apply the weight of the fluid on the elements? Note: If we apply the hydrostatic pressure which...
  9. GSigma

    Pressure Vessel or Large Pipe Modeling

    I have a 120" pipe that I would like to check the stresses at the support points. However, I do not know how to simulate the weight of water in the pipe. I am using STAAD Any tips would be greatly appreciated. Thank you,

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