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Recent content by Bonfouca

  1. Bonfouca

    Calculate Stress and Reinforcement of Pipe Flanges?

    I just squeaked the wheel a little more and am curious to the response that I'll get from the "designer". I put together a package of submittals including welder quals, material specs and wrote a memo that included the following: "Stress calculations and design of the flange weld joints and...
  2. Bonfouca

    Calculate Stress and Reinforcement of Pipe Flanges?

    Cockroach, thanks for your words. I am in the States and will look further into the matter. I don't understand why a designer would leave crucial elements out of the construction plans for piping and civil projects and shift that burden to the contractor/fabricator. The designer of these types...
  3. Bonfouca

    Calculate Stress and Reinforcement of Pipe Flanges?

    Thanks JStephen for your input. I will look into the state laws. It is interesting that not a single engineer that I have submitted my drawings/designs to has ever brought this up to me! My designs have been submitted in several states. I have a hypothetical situation and I would appreciate...
  4. Bonfouca

    Calculate Stress and Reinforcement of Pipe Flanges?

    Thank you for your reply. I appreciate your concern for keeping people out of trouble. I often get involved with performing design calculation regarding structures, machinery, crane rigging and some piping. I always put a disclaimer on my drawings of designs stating that the drawing and or...
  5. Bonfouca

    Calculate Stress and Reinforcement of Pipe Flanges?

    I have been asked to calculate the stress on a pipe flange to determine if any reinforcement is required and if so what it would be. The pipe is 20" OD x .500" wall with the grade to be selected between A-53 gd B or API-5LX-42. The flanges already specified are ANSI Class 300lb slip on...
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