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  1. H

    Maximum deflection for canopy

    I'd be more concerned with any wind oscillation effects (galloping, etc) for this type of structure than deflection under a static load.
  2. H

    Would you consider this beam to be eccentrically loaded?

    If it was very highly loaded I might but not in this case. I'd make sure I had a reasonable load path to resolve any torsion at the columns ie. full height bolted to the dbl top plate. I also wouldn't design the beam to 99% for stresses. As it is it looks like most of the torsion from the...
  3. H

    Another wood knee braced frame thread

    Draw a free body diagram, apply lateral loads and you will see this is stable. It's similar to a pinned base moment frame.
  4. H

    Another wood knee braced frame thread

    For a wood post, pinned is very realistic unless you are embedding the post in concrete. Why would it need to be fixed?
  5. H

    Simpson BLVZ again.

    Footnote #3 addresses this. I don't see the problem, as you as the engineer have to create a load path (DTT2z, cross bracing, etc.). Even if this was rated for pullout would you really load single wythe brick out of plane? I don't particularly like this product but not because it isn't a one...
  6. H

    Do you like this detail and why or why not?

    One there is no plate washer on the detail. Also it's going to take a very thick plate washer to actually have any effect with that large of a cantilever. Are you planning on having a plate washer go under the 2x4 sill? Typically for thick walls (think 2x10) we are offsetting the sill bolts...
  7. H

    Do you like this detail and why or why not?

    Pretty bad detail. Any uplift has to pass to the anchor bolts via cross grain bending on the sill plate. Only the top course of block is grouted or filled with mortar? Is the footing connected to the block wall?
  8. H

    Steel insert in aluminum mullion

    For this instance I disagree. Of course you have to meet strength but the minimum criteria for this situation is serviceability so the glass doesn't shatter when a couple of people lean on the rail. Additional deformation leads to additional deflections which leads to a phone call about...
  9. H

    Load Duration Factor CD for wood

    People put furniture, planters and all kinds of semi-permanent junk on an occupied roof deck. Cd=1.0.
  10. H

    Circular Column Ties - Retrofit

    Wow that column looks awful. How are you restoring capacity to the vertical bars? In lieu of ties you could pour new concrete around the column and wrap with FRP to provide confinement. Regarding the reduced lap for ties, I'd make them correct their mistake. When doing...
  11. H

    I-Joist Rafter Connection

    Why 16"oc for roof framing? Reducing the number of rafters will save more money than worrying about the cost of hangers. Increase your spacing, up your IJ series or even increase framing depth. The arch may appreciate more depth for insulation/venting anyway.
  12. H

    Concealed Flange Hangers

    In my world (commercial/institutional wood framing) 1600 lbs is pretty light. I've specified HUC's in this configuration many times for much higher loads and I'm not losing any sleep. The concern about splitting is a valid one, especially if the carrying member is existing which is why I...
  13. H

    Anchorage for wind design - do you use ultimate or service loads?

    If you are talking about what loads you use for concrete anchor design for wind or what you would enter into something like Profis, it is an ultimate level load (LRFD).
  14. H

    Timber Frame - Simple Seismic Design

    In table 12.2-1 timber frame is listed as a cantilever column system G6 not a bearing wall or building frame system so it doubly does not qualify for simplified method.
  15. H

    Building insulation at slab.

    I don't like that detail either. I would not have a stud wall partially bearing on insulation.
  16. H

    Pole barn spike

    A 4" long "pole barn" spike is just a large nail. Likely 20d. Sometimes ring shank or spiral sometimes smooth. Pole barn spike isn't a clearly defined term and varies by region.
  17. H

    Very steep roof (24/12) - vaulted

    Run the 2x purlins from frame to frame. This gives your MF beam full length bracing. With shop weld hangers, it's way easier to erect as well. You can eliminate the steel ridge and replace the steel "top plate" with wood.
  18. H

    More Engineered Beam Issues?

    Then you might have to get back out there with a laser or string line. Even if there is a pad you may have differential settlement. I'd probably stick a crack gauge on the wall and have the owner monitor it for a few months. If no further movement just patch it. You have a lot more faith in...
  19. H

    More Engineered Beam Issues?

    The quality of construction gives me clues about the cause. From the quality of those piers I expect that there is one bag of sakcrete under them, therefore, no pad. For 6 kips you likely have differential settlement of the pier relative to the continuous wall footing. I don't think that...

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