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  1. jrcan

    Moss method to determine horizontal load distribution Vn for vessel supported by legs.

    I'm trying to use MOSS (3rd Ed) Procedure 3-4 "Seismic Design - Vessel on Unbraced Legs" as I think I found a problem with what Compress is doing. In my case, I have 8 legs that are W12X120 shape. The horizontal load distribution is said to be calculated as: "The horizontal load on any one...
  2. jrcan

    Analytical Finite Difference Method for Designing tall column pressure vessels

    Thanks NRP99, that may be the paper I was thinking...Freese was Fluor...not CB&I. My mistake.
  3. jrcan

    Analytical Finite Difference Method for Designing tall column pressure vessels

    Does anyone have a good source that outlines the basic set up of using a stiffness matrix and/or finite difference approach for design tall pressure vessels? I assume both the in-house and commercially available software for pressure vessel design must use an approach like this? Basically...
  4. jrcan

    Derivation of ASME Joint Efficiency for fillet welds

    @ DriveMeNuts I assumed something similar to your 0.8*0.577, but thought there may be something better. @IdanPV Yup. Gotcha on the committee stuff. I sometimes attend code meetings now and they are getting better at writing up the basis for all we do now...this is an oldy that I couldn't...
  5. jrcan

    Derivation of ASME Joint Efficiency for fillet welds

    Folks, Anyone know the history and/or derivation of the 0.45 joint efficiency used for single side fillet welds? Is it as simple as a slight reduction under the max shear stress or distortion energy criteria (0.5 or 0.577)?

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