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  1. Celt83

    How to Apply Load from Adjacent Building on New Retaining Wall?

    Just be careful with the Boussinesq equation I recall seeing many discussions in the past about what value should be used for Poisson's ratio ( μ )
  2. Celt83

    How to Apply Load from Adjacent Building on New Retaining Wall?

    Bowles - Foundation Analysis and Design - 5th Edition Also search for Boussinesq Equation. AASHTO adopts a form of the Boussinesq Equation for their adjacent surcharge formulas.
  3. Celt83

    Sill plate anchor bolts

    Usually try to go for cast-in anchors but shy away from proprietary anchors so just a standard hex head bolt checked using ACI/NDS. I also like to get that continuous top bar on the outside face of the anchor, feels better having it in the knuckle of the bar bend and also on the free edge side...
  4. Celt83

    Problem with Libreoffice Calc

    See lots of bug posts in the LibreOffice bugzilla regarding this but nothing stands out as a cause: here were the most common issues I found: The sheet was not auto-calculating after the paste operations so it only looked like the value instead of the formula was pasted. Force a sheet re-calc...
  5. Celt83

    Decision which Packages you will use

    I tend to use mostly mainstream packages like Numpy and Scipy. It's a balance though one which I struggle with constantly wanting to figure things out on my own and write the code myself vs finding something pre built to utilize.
  6. Celt83

    Light-Frame Wood Design Software with Modeling and Load Tracing Capabilities

    No argument there XR250 software like this is more beneficial for your 3-5 story multi-family project.
  7. Celt83

    Light-Frame Wood Design Software with Modeling and Load Tracing Capabilities

    If you’re mostly after load tracing then woodworks concept mode is passable. Autodesk Robot added in a load take down analysis in 2023 which functions ok within it’s limits, I’d say if you have robot already worth giving it a try.
  8. Celt83

    Load Distribution on Elements

    @Tygra: "...and I will do what you say." Please don't just do that because I said to. Figure out for yourself what the function of the walls is intended to be. If they are intended to be load bearing then keep them, if they are masonry or concrete frame the short beam to the wall end if they...
  9. Celt83

    Lateral concerns for making an opening in a house

    What does the floor plan look like, anyway to justify a 3-sided diaphragm? Anything new I'd probably add in board of the brick and carry down to a new foundation, unlikely you'll find any products for anchoring to the top of an existing brick wall.
  10. Celt83

    Steel Angle Question

    Interestingly seems the previous iteration of this problem had the correct solution: eng-tips thread I think this was meant as a “gotcha” problem and perhaps it “got” the solution writer this go around.
  11. Celt83

    Steel Angle Question

    neither of those assumptions precludes bending in the vertical angle leg.
  12. Celt83

    Steel Angle Question

    I would argue the proposed solution is incorrect for the shown configuration, the critical bend plane is actually in the vertical leg. The load configuration shown will cause the angle heel to pull away from the wall and the vertical leg will bend about the anchor. So the critical value for P...
  13. Celt83

    Statically Indeterminant Beam Problem

    BA: "I'm a little rusty on my integration, but I thought all of the constants turned out to be zero." you are correct I did not download the earlier PDF and thought the derivation was for the Sin load applied partially to a span not to a full simple span.
  14. Celt83

    Statically Indeterminant Beam Problem

    Some Observations: 1. Your derivations for a sinusoidal load are all missing the integration constants which would be solved by applying the relevant boundary conditions. 2. I can vouch for the SkyCiv analysis being correct for the inputs noted in the printed software output. 3. Is your "beam"...
  15. Celt83

    Load Distribution on Elements

    You had a wall and a beam in the same location in your model. The software was applying a portion of the distributed load directly to the wall panel and the remainder to the steel beam which is why when you looked at the beam the load stepped down where the wall co-existed. You said you deleted...
  16. Celt83

    Wood Diaphragm Gravity Design

    Grab a copy of APA D510: Link Free once you register on APA’s site
  17. Celt83

    Stuck on this Frame analysis.

    Greg: Interestingly enough it seems this structure is sensitive to the axial rigidity of the members when the load is applied to the corner nodes only. Models: 25.8kN applied to upper left node 25.8kN applied as opposing forces to upper corner nodes 25.8kN applied to...
  18. Celt83

    Stuck on this Frame analysis.

    Which Hibbeler textbook do you have?
  19. Celt83

    Stuck on this Frame analysis.

    "I am surprised that the axial stiffness made even that much difference in FX." To clarify my hand calc. did not include axial stiffness and in the software I used large members to make the impact of the axial deformation negligible I also disabled shear deformations.
  20. Celt83

    Stuck on this Frame analysis.

    "..and the span is 7.9m, .." Oh I read the span to be 7.7m.
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