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Recent content by dold

  1. dold

    top plate on steel beam

    More of a west coast thing I suppose but I worked at a firm where 3x nailers were standard for any sort of steel/wood interface. Primarily for nail length considerations for nailing drag straps to steel beams and what not.
  2. dold

    Truss Top Chord Lateral Support

    .... .... So how do these conversations with the architect go? "Dear Mr. Architect, my sub-consultant who works for free at eng-tips.com suggested....." Kudos to BA, man. Holy cow.
  3. dold

    Dollar store roof collapse

    There's a great Business Wars podcast series on the Dollar Store Wars. Fun fact.
  4. dold

    Dollar store roof collapse

    Side note - I have done site surveys in several dollar tree / family dollars (soon to be converted into whatever else) and the back of house of those places are absolute horror shows. Stock rooms stacked to the ceiling with ripped open boxes. Absolutely inaccessible areas of the building due to...
  5. dold

    Masonry Wall Construction

    I'm pretty sure every CMU and concrete tilt panel i've ever designed have been designed with slender wall methodology. And yeah I'm with Aesur - just plug it into enercalc or whatever you would otherwise use to design a wall. All this talk of "extra risk" and what not does not compute with me...
  6. dold

    ASR

    ASR is typically (or at least in part) a result of deleterious material in the aggregates. We have issues in our region (the aggregates) with this in regard to the strict ASR testing for FAA P-501 rigid pavement. I suspect you could find some reference material from the FAA.
  7. dold

    Masonry Wall Construction

    Yeah I'm not seeing anything really out of the ordinary for 20' tall 8" block with 50psf wind. Jambs at openings probably have to be 3 cells each side with (2) #5. Again, nothing that can't be done. Certainly nothing that would cause me to 10x my fee... Just my $0.02
  8. dold

    Manager Says Keep the Restraints — I Think They’re Unnecessary. Who’s Right?

    I'd bet part of manager's argument is that the stair stringers can't brace the columns because of some sort of slip joint detail at the stringer to floor framing connections. Just a guess but I can see the argument perhaps. Maybe the green beams are moment connected to the columns for X axis...
  9. dold

    Crazy cantilevered steel deck

    Anchor bolts: 1/10, front might fall off Framing: 4/10, probably works fine, bad design with the cantilevers off the beam but probably won't collapse, looks cool No ties between conc pier and wall: 2/10 Footing: 6/10 would probably rotate if pier rotation wasn't resisted by membrane action of...
  10. dold

    Snow Shed - What slope should it be at?

    I've designed "snow canopies" before. Where the entire snow drift from the higher roof is supported (captured) by a canopy which is suspended off of the new structure's wall. Interesting workaround. In this particular case it was built above the lower roof (same owner/property) of the older...
  11. dold

    Diaphragm Tie Plate

    The 3/8 tie plate is there specifically because it is in line with a braced frame. I.e., a collector. PL 3/8x4 Gr. 50 (for a small-ish beam) is good for about 50k ASD. That will hammer a bolt group for smaller beams. Even with bigger beams you'll end up with several columns of bolts in the...
  12. dold

    Tall building calculation report

    https://portal.ct.gov/-/media/csc/2_ems-medialibrary/westhartford/ishamrd/verizon/emver155190205responsetoincompletepdf.pdf This should suit your needs
  13. dold

    Joist seat forces in Multiple Span Joist Construction

    Collective chord behavior. https://digitalcommons.calpoly.edu/cgi/viewcontent.cgi?article=1044&context=aen_fac I made a spreadsheet for it ages ago to prove to my boss that our chord sizes were absurd in some of our warehouses, but never really used it. Because, well:
  14. dold

    Importance Factors Before The IBC

    I don't have an answer to your question directly but... My first step when working with older buildings is to file a FOIA (sometimes FOIL) request with the jurisdiction where the building is located. Sometimes they have nothing, sometimes they have a treasure trove of drawings and as-builts and...
  15. dold

    Lateral Torsional Buckling of Thin Beam

    Still seems to me like these fin things are simply going to get squashed right at the edges of your support. The "beam" (fin thing) will deflect upward ever so slightly and at that point all of your reaction forces will be concentrated at the edges. I probably wouldn't approach this as a...
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