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  1. S

    Meaning of N_cr,TF < N_cr,T in Eurocode

    Ah, I mistyped the sentence from Eurocode. It is in fact "but N_cr < N_cr,T", as you have said. So it just basically means N_cr is the lower of N_cr,TF and N_cr,T. Still I feel Eurocode has a quite strange way of expressing that :rolleyes: Thank you for the guide link, there are some good...
  2. S

    Meaning of N_cr,TF < N_cr,T in Eurocode

    Eurocode 3, section 6.3.1.4 says this about torsional and flexural-torsional buckling: (1) For members with open cross-sections account should be taken of the possibility that the of the member to either torsional or torsional-flexural buckling could be less than its resistance to flexural...
  3. S

    Rotational restraint provided to columns at story levels

    Thank you all, excellent discussion. I agree that proper floor diagphram, such as a concrete slab, would have a greatly stiffening effect. In most projects that I have worked in however, there has not been a slab on top of the beams but rather a grating. I would not expect steel grating...
  4. S

    Rotational restraint provided to columns at story levels

    Hello all. Often the effective length of a column in steel frames is taken as the story height. This applies not only for flexural buckling, but also for lateral-torsional and pure torsional buckling. I'm currently reading the design guide "Worked examples for the design of steel structures"...

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