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  1. joshsgamb93

    Rust/Corrosion and Material Strength

    Thank you all for the valuable input! I do realize material properties and section properties are not the same and I guess I should've chosen my words more technically. I appreciate the input from all of you
  2. joshsgamb93

    Rust/Corrosion and Material Strength

    I agree with your statement about empirical observation. Maybe I will initiate a study with some colleagues.
  3. joshsgamb93

    Rust/Corrosion and Material Strength

    Yeah jdonville that is something I was already planning out for certain areas where the rust is a little concerning. Thank you all for your insight! If you come across any studies/equations I can read over just let me know.
  4. joshsgamb93

    Rust/Corrosion and Material Strength

    Thank you both for the insight. So if you have a metal staircase with corrosion covering roughly 70% of it, is it safe to assume zero strength for the staircase and to not allow access through it? I seem to get pushback on that assumption, but I don't see it as an unreasonable assumption. I...
  5. joshsgamb93

    Rust/Corrosion and Material Strength

    Are there any good sources/articles/studies done on the effect that rust/corrosion has on a material's strength? Specifically, I am interested the effect that rust has on a metal's strength, and if there are any equations that exist to determine the strength after a certain amount of...
  6. joshsgamb93

    Fall Protection Concrete Screw Anchor

    Thank you all for your help/assistance!
  7. joshsgamb93

    Fall Protection Concrete Screw Anchor

    JLNJ, thank you. I have requested any test reports from the manufacturer. I do not have much experience with concrete anchors, but from research I've done online and what I've learned, concrete anchors can have a high pull-out force. Are there any specific analyses I can perform to ensure the...
  8. joshsgamb93

    Fall Protection Concrete Screw Anchor

    Just looking for some professional engineering judgement. The attachment below is a Concrete Anchor Screw for fall protection purposes; however, I find it hard to believe that it would stay in the concrete under the loading of a fall. My judgement is telling me that if it was installed into...
  9. joshsgamb93

    Fall Protection

    CANPRO, I agree. Fall protection anchors that receive an impact load should be reanalyzed, while the rest of the fall protection equipment (harness, lanyard, connectors, etc...) shall be taken out of service.
  10. joshsgamb93

    Fall Protection

    @CANPRO and @human909 I understand how, for horizontal lifelines, the force translated to the anchor can be greater than 5000lbs due to the geometry; however, in a simple fall arrest system (full body harness, 6' energy absorbing lanyard with an average arresting force of 900lbs, I-beam clamp)...

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