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  1. Rabbit12

    Moment Frame on Asphalt / Wheels?

    I would analyze these as roller bases. Something like the ones posted above are what I had in my head.
  2. Rabbit12

    Moment Frame on Asphalt / Wheels?

    What keeps this stable perpendicular to the frame?
  3. Rabbit12

    Legal Thoughts on Stamping Plans

    This is a good summary. Unless there is information not being presented this is pretty much what I was envisioning. Doing what the OP is suggesting cheapens our profession and takes potential opportunity away from engineers that are following the rules.
  4. Rabbit12

    Legal Thoughts on Stamping Plans

    Are you doing a full review of the structural calculations for the things you are stamping? Can you provide some examples of what you are being asked to stamp?
  5. Rabbit12

    Legal Thoughts on Stamping Plans

    In reality isn't our liability individual? Certainly most of us are covered by an employers' or personal professional liability insurance but at the end of the day if things really turned south we could be sued personally as well correct?
  6. Rabbit12

    Legal Thoughts on Stamping Plans

    This sounds like it is likely illegal in some states and possibly unethical. Can you give us an example of something you do this on? Are you stamping home plans or something much more minor?
  7. Rabbit12

    Stainless Steel Fasteners

    Dik, I've had contractors use this stuff before: https://www.derustit.com/products/wonder_gel.php This was used for field welds. I don't know what is used in the shops on fabricated pieces, but our specifications require P&P on any welded element. And yes from my understanding SST can be...
  8. Rabbit12

    Roof top Solar Panels

    The LL assumption can work good with people, but snow still falls on the panels if you are in a region with snow load that exceeds 20 psf. Not to mention the drift loading concern as mentioned in subsequent posts.
  9. Rabbit12

    Anchor Bolt Sleeves

    Agree, alignment is one thing, but they are also used to increase stretch length when an anchor needs to be preloaded. Very common in the oil and gas industry when you have tall vertical vessels or large vibrating machinery.
  10. Rabbit12

    Propane tank anchoring

    Generally curious, does the PIP provide anchor diameter, grade and embedment into concrete? Some places such as CA aren't likely to allow you to just reference a PIP standard and will require calculations.
  11. Rabbit12

    Propane tank anchoring

    Calculate the seismic base shear using Chapter 15 of ASCE 7. Anchor forces should be pretty simple from that point forward.
  12. Rabbit12

    Arch changed occupancy load after permit issuance

    So if the occupant load is 230 and an E is your design adequate as is? It was permitted for that correct?
  13. Rabbit12

    Career Advice – Design Experience Getting Offshored

    I'll rant a bit too. This practice is becoming common and is likely to get worse. I work for a large engineering firm and my company has a large team overseas. We are being pushed by upper management to use them more and more. I hate it. They have zero field experience. I have an...
  14. Rabbit12

    Metal Ceiling - partial collapse

    Use screws.
  15. Rabbit12

    The dangers of software and code changes

    I can't wait to deal with 3rd party/vendor designs for the new snow loads. I recall a conversation with an OH door vendor a few years ago when the wind load changed from allowable to ultimate. They were all up in arms about the wind load on my drawings. We wanted windows in the door and the...
  16. Rabbit12

    Helicopter crash Hudson River

    The images of the family photos just prior to this incident are heartbreaking. They are excited about a sightseeing trip not knowing their lives are going to end in a few short minutes. Always good to remember you aren't guaranteed tomorrow.
  17. Rabbit12

    Dominican Republic Nigh Club Roof Collapse

    It is simply amazing how quickly the exact cause of this collapse was determined by simply looking at aerial pictures of rubble. Less than 48 hours. Well done.
  18. Rabbit12

    Post Installed Bolts on Steel

    The cope looks great too!
  19. Rabbit12

    PEMB buildings from China? Engineering?

    I have access to a PEMB manufacturer's program. It's something our company negotiated with one of the big players in the industry. It's definitely a black box and I'm not an expert user but I can use it well enough to get decent preliminary loads to use for initial foundation sizing, but I...
  20. Rabbit12

    HELP on Pool wall

    This almost doesn't even need designed (#5 @ 16" work easily). Someone competent in masonry construction could have built this successfully.

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