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Recent content by Eng16080

  1. Eng16080

    Forum Clutter - Students (and others) posting in this forum

    I’ve noticed a dip in quality recently with some of the posts and also noticed plenty of repeat questions, but I still think this place is top notch. I wouldn’t want a new (or old) engineer who doesn’t know something obvious to others (but wants to learn) to be afraid to ask a question. In...
  2. Eng16080

    top plate on steel beam

    Typically, my detail has a single 2x wood nailer with 9/16” flange holes staggered at 12” o.c. (one bolt every 12”). The nailer is connected with 1/2” bolts with washers and a nut. I prefer through bolts over screws, PAFs, and other fasteners. I’ve even had contractors request bolted...
  3. Eng16080

    Steel Beam size vs Wood

    Perhaps this is useful information, but for most residential projects I'm involved in, it's usually beam deflection that controls, not bending or shear.
  4. Eng16080

    Steel Beam size vs Wood

    Yup, really it's not so simple as finding a steel beam with equivalent strength to a wood beam. A good engineer would need to understand the big picture of what you're trying to accomplish and then provide their professional guidance in terms of a reasonable solution. Is this a huge amount of...
  5. Eng16080

    Hip roof, how would you layout trusses; 8' flat, except middle section want slope ceiling scissor trusses (hip girders, front jacks, side jacks, etc.)

    Something like kootk's sketch seems reasonable to me. I think it's useful to have a general idea of what a reasonable layout might be for this, but don't be surprised when the truss supplier comes back with something a little (or a lot) different. That's why it may be best to note the post...
  6. Eng16080

    Do you still do load takedowns by hand?

    Agreed. I've come to similar conclusions as this. It's probably also worth keeping in mind that our "exact" solutions are often based on making idealized assumptions about boundary conditions and other things which don't quite match reality. Most beams considered as simply supported will have...
  7. Eng16080

    Do you still do load takedowns by hand?

    I think OP's goal is to provide a quick, approximate "load takedown" (as they call it). For me, creating a FEM model for this purpose would not be quick.
  8. Eng16080

    Hip roof, how would you layout trusses; 8' flat, except middle section want slope ceiling scissor trusses (hip girders, front jacks, side jacks, etc.)

    If you don't know the exact truss layout, I might consider adding a general note stating that stud sizes and locations are to be coordinated based on the truss locations and end reactions from the truss supplier's layout. Or if the numbers make sense, maybe you could state something like...
  9. Eng16080

    Do you still do load takedowns by hand?

    For me, this has been the single biggest challenge in developing software tools for engineering purposes. If I'm not careful, my tendency seems to be creating something that becomes too complicated, to the point that I either won't have time to finish, or the underlying code folds under the...
  10. Eng16080

    Steel Beam size vs Wood

    I agree with the comments above. Your structural engineer should be able to answer these questions rather easily if they're any good. Also, if I'm understanding the sketch, spanning nearly 14 ft with 2x6s spaced at 24" o.c. is rather questionable. Or is that the span you're trying to lessen...
  11. Eng16080

    LVL Beam to Short

    I don't normally think of these sorts of things in terms of a rating scale. I simply don't like that gap. I think it's potentially problematic, and I would have it fixed. While it's perhaps not simple to do so, I also don't think it so difficult that's it's worth excessive contemplation...
  12. Eng16080

    Do you still do load takedowns by hand?

    I have no idea what the correct terminology is here. I normally refer to this as "Load Path", but I used "Load Takedown" here because OP used the term. In my mind, it's simply the path that an applied load takes in it's journey through the structure from point of application to the foundation...
  13. Eng16080

    LVL Beam to Short

    Can you temporarily support the LVL, remove the hanger, provide a new ledger/nailer to fill the gap, then reattach the hanger? Or do the same but use a top mount connector instead? Or two steel angles (one to either side) with thru bolts at the LVL and thru the wood ledger/nailer and beam web...
  14. Eng16080

    Do you still do load takedowns by hand?

    I do load takedowns manually using layers in AutoCAD. I don't love this approach but it's generally simple and relatively efficient for my purposes. For more complicated structures, I'll create a partial or full model in RISA3D. I saw your post on reddit not too long ago. What you've created...
  15. Eng16080

    Ridge beam at Fireplace

    It's been awhile since I've designed something like this, but I recall there being a minimum required separation between a chimney/fireplace and combustible construction (like wood). The original question is unclear to me, but if the intent is to support the ridge on the masonry, I don't think...
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