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  • Users: DRoam
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  1. DRoam

    Large Custom Thread

    Thanks all for the input. I think I should be able to designate the thread okay with the information in KENAT's FAQ. Thank you for that, KENAT. My question now is, how do I go about making sure my threads will not strip under load? The threads are holding the lid onto the end of a pressure...
  2. DRoam

    Large Custom Thread

    We are designing a couple of parts which will thread into each other. The OD of the internal part is 8.75 inches. From I've seen, standard UN threads only go up to 4 inches maximum. We need a thread with a nominal size of 8.75 inches, and a relatively fine pitch, say 16 threads per inch or more...
  3. DRoam

    I-Beam vs. Square Tube for Columns

    @jayrod12: 1) Should the cap plate be rigidly attached to the column's web AND flanges, or only to the column's web, as depicted here? Link. I would guess the reason for only welding to the web would be to prevent it from becoming a 'moment connection' and transferring moment to the column. I...
  4. DRoam

    I-Beam vs. Square Tube for Columns

    Thanks all for the input. I still feel like I'm doing something very outside my expertise and I'm uncomfortable making these design decisions. So I really appreciate all of your help. I have two more questions. 1) As it looks like we'll be using I-beam for columns, what type of connection...
  5. DRoam

    I-Beam vs. Square Tube for Columns

    Thanks all for the responses. I'm still weighing everything that's been said and doing some research to better understand these unfamiliar concepts. In the meantime, some specific questions: 1) What is a "moment connection" or "moment frame"? Aren't most beam end connections capable of carrying...
  6. DRoam

    I-Beam vs. Square Tube for Columns

    Hi, we're in the process of designing a single-story mezzanine which will support 3-4 components weighing up to 10,000 lb. each. I've attached a picture showing the framework we're using. My question is regarding the columns. My supervisors want to use I-beam for the columns. But everything I'm...

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