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Recent content by Lomarandil

  1. 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.
  2. 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?)
  3. Lomarandil

    Thread embedment required for bolt in tension

    I think there is, but it's in the purview of mechanical engineering.
  4. 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.
  5. 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...
  6. 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...
  7. 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
  8. Lomarandil

    Old Through Plate Girder Bridge

    Here's one, 1952 riveted plate girder. Hope the resolution works.
  9. 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.
  10. Lomarandil

    Old Through Plate Girder Bridge

    A doubled web would be unusual, but otherwise your cross section is likely true. If I presume a common 7/8" rivet, it looks like maybe a 72" tall web, L8x8x3/4" flange angles, 18"x3/4" cover plates. Then stiffened up the wazoo! Although many of those would be neglected for basic load rating...
  11. Lomarandil

    Axial pipe load - how is this transferred to the pad foundation

    Anaheim -- Realistically what happens is that the thermal expansion does in fact generate that large overturning moment -- your effective breadth of the foundation diminishes significantly, and you apply a significant pressure to that reduced bearing area. Right up until the point that the...
  12. Lomarandil

    Long A325 Bolt Alternatives

    High spec threaded rod is great and all, but given the same thought as above, you might want to think about coil rod. Ubiquitous and versatile.
  13. Lomarandil

    DAM ENGINEERING-RISA FOUNDATION

    If you really need to capture 3D geometry of your structure, RISA may not be the best option. Solid elements are available, but I get the impression that they are not as user-friendly as other softwares that are built with 3d solid structures in mind. If a 2D slice of the structure is suitable...
  14. Lomarandil

    A stable platform resistant to aeolian blowout

    I think the transport is the challenge there HTURKAK.... but maybe not, if not concrete they'd have to get the water or rocks out to site. Agreed that the concept is viable from a structural and geotechnical perspective (we use concrete "deadman" blocks all the time).
  15. Lomarandil

    Uneven Beam Camber When Loaded

    Oh, the effect is entirely sensical: The girders were presumably uniformly cambered, without consideration of the deck placement sequence. The girder directly under the joint was originally loaded with only half of it's tributary width of wet concrete. As such, it deflected downward less than...
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