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  1. DigiAlmond

    Load Duration Factor CD for wood

    I see what you're saying, I just think that stacks with the deck provision as well. We're all calling it a roof deck here. I get there's a level of semantics here, but I would say the occupancy served is a deck in a residential and thus gets the 1.5*40 psf. That's reasonable. I'll be honest I...
  2. DigiAlmond

    Load Duration Factor CD for wood

    I would say yes, a roof deck is a deck per ASCE. I treat it the same as I would a balcony or anything like that where people could conceivable be decently close together on a nice day/evening. I wouldn't really get the argument for just treating it as a 40 psf live load. I do think that treating...
  3. DigiAlmond

    Roofing Fastening Detail - Loads and General Critique

    It's easy to over-think after reading a really good thread like that. I skimmed it and I realized I have a good bit of reading I need to catch up on. But traditionally C&C has been good enough from me in similar situations. Yes adhering it or some other way (if they exist). I didn't think of...
  4. DigiAlmond

    Roofing Fastening Detail - Loads and General Critique

    That was my assumption. I think if these connections are decently close (which it sounds like they will be) it's probably a wash. But I would probably check with the arch and make sure the insulation on the T&G has some method of attachment to the T&G, for good measure. Doesn't need to be...
  5. DigiAlmond

    Roofing Fastening Detail - Loads and General Critique

    For loading, I guess you could use the Canadian equivalent for ASCE 7's Components & Cladding loads (if that's a thing). I feel like that could be over kill, but it would be conservative. Looking at the thread you linked, it seems like they were trying to work with a fairly extreme edge case...
  6. DigiAlmond

    Help Identifying Floor System (1900ish)

    Of course! If you don't have it I highly recommend the antiquated structural systems illustrated from Matthew Stuart: https://files.engineering.com/download.aspx?folder=cbde14c3-2711-4a15-a005-2f87f094ec2d&file=ANTIQUATED_STRUCTURAL_SYSTEMS_-_DICTIONARY.pdf It's usually the first thing I...
  7. DigiAlmond

    Help Identifying Floor System (1900ish)

    It seems like the second system you show could be the truscon ribbed floretyle or floreform: https://archive.org/details/TrusconFloretyleConstruction/page/n11/mode/2up the document I linked is from 1905, so that product was alive and kicking around the time your building was built? does that...
  8. DigiAlmond

    2024 Firm Personnel Changes

    I don't work for a particularly big firm Engineers (by experience and by license): >25 years = 1 PE (no change) 15 - 25 years = 0 (no change) 9 - 14 years = 3 PE (no change) 4 - 8 years = 1 PE (no change) 0 - 3 years = 5 EIT (+2 EIT in 2024) Draftsmen/women/BIM = 0 (no change) Field...
  9. DigiAlmond

    Gypsum as a structural material

    I've been knee deep in some historic building research for a project I'm working on. This old building really has the full 9 yard of obscure building systems, which means I've looked at a lot of era-appropriate catalogs to try and find a match. One thing I've noticed while trying to hunt down a...
  10. DigiAlmond

    Propretiary Joist System Question

    Hello! I'm working on a renovation and have been trying to put together the history of this building. As far as I understand this building was first constructed in around 1950, with some pretty standard joists and some sort of plank deck (unit slab or something of the sort). A few years later...
  11. DigiAlmond

    Kalmantruss system info

    Excellent, this is exactly what I was looking for thank you!
  12. DigiAlmond

    Kalmantruss system info

    Hey all! I'm gearing up to being working on a renovation that seems to include some trusses with x-webs. I haven't had a chance to go out to the site yet to get anymore information other than a few pictures from the architect. Obviously a fairly antiquated system, and I'm trying to learn a bit...
  13. DigiAlmond

    Wood Flitch Beam - Notched Bearing?

    Hey all! I'm working on a higher end residential home, and the goal from the architect is to "use as much wood as we possibly can". I'm all on board with that. Now I'm running into an issue where a wood "girder" is supporting a beam that is approximately 10" above said girder. Both beams are...
  14. DigiAlmond

    Rivet Analysis Questions

    Hey all! Thanks for the feedback! If I understood correctly my method may work but it seems like there was a good reason for the conservative nature of design tables at the time. Plug welding is an interesting solution if it comes down to it; I think we're planning on sending in samples of the...
  15. DigiAlmond

    Rivet Analysis Questions

    Hey everyone! We've been doing some analysis on an existing structure built circa the 1950's. We've got some rivet connections we'd like to analyze. We don't really have anyone at our firm right now with any experience with rivets. I've been exploring the forums here, looked through DG15, looked...

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