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Recent content by Lomarandil

  1. Lomarandil

    Crane foundation - CIRIA C761

    Md is moment on the diagonal, so perhaps the eccentricity is being defined relative to the orthogonal axis?
  2. Lomarandil

    Pile longitudinal rebar twisted during fabrication

    BA, I have bad news for you about construction tolerances…
  3. Lomarandil

    Pile longitudinal rebar twisted during fabrication

    It's absolutely a question of spec compliance, not safety or permanent capacity. There's a slight effect on the capacity of the cage while it's being tripped to vertical, if the cages are long enough to require multiple rigging points. I'd have no trouble signing off on it for my projects...
  4. Lomarandil

    Single Span Bridge Seismic Requirement per CHBDC

    Eh, while this may pan out from an engineering perspective (depending on the method of truss fabrication — many truss connections are more complex and less redundant than a fully welded plate girder), I think you’re sailing toward a fight with the owner’s engineer. I’d start that discussion to...
  5. Lomarandil

    tapered Column design

    Looks like a pretty standard column, just happens to have a bunch of eccentric dead load on one side. Design as though 9" wide. Now detailing -- there's a little bit of detailing attention required here, particularly if the column receives any external load. But that's tomorrow's thread.
  6. Lomarandil

    Lateral Loaded Pile with Pile Cap & Slab-on-ground

    Bingo... Whatever permanent and lateral load are transferred to the slab can be resisted by friction. But because the SOG is often isolated from the remainder of the structural system (to mitigate shrinkage cracking), the majority of the structure's load will first look to be resisted by pile...
  7. Lomarandil

    Cantilever Plate bending with UDL

    If the load is uniform in the direction parallel to the fixed edge, you'd typically design that on a unit length basis.
  8. Lomarandil

    Anchorage of Positive Moment Reinforcement

    Yep... if your support is only 200mm thick, you need to not be using 16mm bars. Replace them with 12mm (or lap to 12mm for the anchorage?)
  9. Lomarandil

    Thread embedment required for bolt in tension

    I think there is, but it's in the purview of mechanical engineering.
  10. Lomarandil

    Thread embedment required for bolt in tension

    Structural nuts have hardened threads. You won’t match that capacity by merely tapping a hole. Might work for very low loading.
  11. Lomarandil

    The minimum number of piles required for static load test

    Likins suggests (in perhaps this article: https://ascelibrary.org/doi/10.1061/40743%28142%2914) a correlation between factors of safety in the design and the quantity of piles load tested (and type of load test). From his summary, I believe ASCE 20-96 and IBC were each non-specific when it came...
  12. Lomarandil

    Steel Bearing - bridge Anchor Rod Design

    Yeah, the bolt bending is a killer. If you can't weld washers, can you oversize the holes even more (or provide a port from the bottom) and inject epoxy or grout to get positive shear engagement at all anchors? I agree with Rod, you ought to be able to count on some shear transfer through...
  13. Lomarandil

    Windloads for a building in a building

    Yeah, I'd certainly set two lower limits of 5psf wind or 2% DL. Whether a higher load is appropriate depends a lot on the enclosure (and scale?) of the larger building
  14. Lomarandil

    Old Through Plate Girder Bridge

    Here's one, 1952 riveted plate girder. Hope the resolution works.
  15. Lomarandil

    Moment Frame on Asphalt / Wheels?

    Craig beat me to it. Don't discount the stabilizing effect of a heavy load. And it's hard to get a static friction coefficient less than 0.1, even in wet conditions.
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