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  • Users: coco1953
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  1. coco1953

    Cracked Concrete Sections

    Monica: You can handle the issue via the modification factors available at the Define Frame Section dialog box. Understandably ETABS doesn´t have an automatic option for that because this approach is not widely applied. Actual limitations for lateral drift require shearwalls that make the...
  2. coco1953

    Impact factor suggestions needed

    I suggest a simple approach by doing the following: Find the energy carried by the magnet at the moment of hitting the wall. It will be kinetik but is equivalent to mass by vertical distance traveled before hitting. If you can estimate the hitting speed would be better, because in addition to...
  3. coco1953

    Torsion capacity in existing RC beam

    Sam, an aspect that you could check is whether the formulation of the shell elements used to model the slab includes or neglects transverse shear deformations, since, depending on the span-to-thickness ratio, they would be affecting the torsion output in varying degree. Also: Are you taking into...
  4. coco1953

    Interstory Drift effect on multi-story wall panels

    Thinking in a practical way, if the structural engineer who prepared the plans has not worried in specifying the drifts for which your panels should be designed, you should not either unless you could be liable for the damages they suffer in case of a shake. If you are, you could ask the...
  5. coco1953

    Quick Natural Frequency Estimates

    But, I have to add, calculating the freqs takes exactly the same effort, so you can also do it directly once you know the load and inertia. I guess tha trying to estimate the freq just from the deflections without taking load and inertia into account coul lead you to gross deviations from the...
  6. coco1953

    Quick Natural Frequency Estimates

    Deflections and fequencies are closely related. At Roark's Formulas for Stress and Strain you can find a table with formulas for the frequencies of beams and bars, and also of course for deflections, and you can derive the relations yourself, that in some cases are quite simple. For example...
  7. coco1953

    SAP2000 URGENT QUESTION

    HOla colega. Soy peruano y tengo bastantes años de experiencia trabajando proyectos estructurales con SAP2000. Aprender lo necesario para modelar y obtener información de diseño podría tomarle más tiempo del disponible, y podría usted caer en una variedad de problemas que le tomará tiempo...

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