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Recent content by JD P.E.

  1. JD P.E.

    Bolt Prying Question (Underhung beam connection)

    I understand the basic prying concepts and calcs. However, I am connecting this monorail under two beams and this version of prying came to mind. Does this practically exist or does the stiffness of the monorail/web prevent meaningful prying in this manner? I figure the flange/web would "flex"...
  2. JD P.E.

    Residential Foundation Practices

    Thanks lexpatrie. To be honest, I didn't even know about the FAQ tab, I guess I haven't been paying attention to the forum closely enough. Thank you for that!
  3. JD P.E.

    Residential Foundation Practices

    Thanks everyone - after some targeted research it looks like XR250 is right about that school of thought. Interesting how the geotech never recommended that as an option then. lexpatrie, which forum are you talking about? I'd like to do some more reading on those documents.
  4. JD P.E.

    Residential Foundation Practices

    I was talking to a home builder buddy of mine and had an interesting conversation. He showed me a soils report (sealed by a geotech engineer) and the soils are expansive (Texas clay). Geotech recommended drilled shafts for the grade beams (with suspended slab) or 8 feet of engineered fill to...
  5. JD P.E.

    Taking the PE exam before experiance

    For me, the PE exam was largely theoretical and frustratingly so. With that said, who cares if you have experience or not before you take it. Most questions (while they are not easy per se) do not necessarily reflect a real life engineering situation. I took the exam 4 months after graduating...
  6. JD P.E.

    General rant - early career burnout

    Only reason I suggested opening shop was this comment: You may want to work things out with your current employer and make that work. That could be a good path. Just give yourself the courtesy of considering if you worked all this OT on your own business where you might be. When I feel...
  7. JD P.E.

    Core Drilling

    Like others have said avoid rebar to get warm and fuzzy feelings. Realistically you could probably drive a small car through the wall and be fine… well maybe not that extreme but a small hole won’t even matter.
  8. JD P.E.

    General rant - early career burnout

    Assuming you’re licensed it sounds like you know how the business works and you should investigate opening up your own shop. Don’t forget a good portion of your billable hour is profit. There’s nothing wrong with that either from an employee/employer perspective but it is on the table if you...
  9. JD P.E.

    Calculate Shear forces on a bolt midspan

    Regarding just doing a moment transfer - without positive connection (i.e. a moment splice) I would lean more towards thinking it doesn’t transfer moment and the inner tube would just be transmitting a point load such as a cantilevered load. If it did transfer moment I would think it would be...
  10. JD P.E.

    Calculate Shear forces on a bolt midspan

    Wouldn’t the bolt shear be the transverse shear force at the intersection of the tube/sleeve? Kind of like the calculation for nail shear on a built up wooden section.
  11. JD P.E.

    Tube support problem

    Can you provide more details regarding the support type/dimensions maybe even pictures or sketches? Also how many internal rollers/what type (part #, McMaster # etc). Also tube dimensions for each section. I’m willing to help you out, sounds like a cool project. Glad to see someone take some...
  12. JD P.E.

    Patch Welding on Amine Regenerator Unit

    I commented on your other post; pasted below. I work in this area of pressure vessel mechanical integrity and do fitness for service analysis. Environmental cracking (such as sulfide stress corrosion cracking) cannot accurately be predicted and SHOULD NOT UNDER ANY CIRCUMSTANCES try to be...
  13. JD P.E.

    Weld Cracking in Rich Amine service

    I work in this area of pressure vessel mechanical integrity and do fitness for service analysis. Environmental cracking (such as sulfide stress corrosion cracking) cannot accurately be predicted and SHOULD NOT UNDER ANY CIRCUMSTANCES try to be predicted. It’s simply unpredictable. You cannot...
  14. JD P.E.

    Resultant Anchor Shear Question on Ledger

    Thank you for your feedback. I went the route of 2 rows of anchor bolts (4 total) because there was room and "why not". I don't love just relying on two anchors in this type of design, but I'm sure others do it. The concrete edge distance is the limiting factor here with the minimum dimension...
  15. JD P.E.

    Wide Flange Clamp Design

    I would choose to do an FEA if you have capability to.

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