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  • Users: sbisteel
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  1. sbisteel

    Tappan Zee Bridge Broken Bolts

    https://www.timesunion.com/projects/2021/visuals/timeline-of-broken-bolts-on-cuomo-bridge/ Looks like they had dozens of A490s snapping after tightening, likely from hydrogen embrittlement, and a big attempt to sweep it under the rug.
  2. sbisteel

    Stiffened Seated Connections - Roll Clips

    Currently working up some details for large beams framing into WF columns. For instance, a W36x800 framing into a W12 column with ~530k end reaction. We're going with a stiffened seated connection, however I'm wondering what I should do about the roll clip. AISC states that an L4x4x1/4 is...

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