FEM4Structures
Structural
Analyzing steel framing system in RISA 3D. You encounter a beam with “Max Deflection Ratio” greater than L/240 {for example Max Deflection Ratio is L/120} such that max deflection is at the end which frames into the girder. Load on beam is negligible. Is it correct to say that under this condition, higher deflection ratio can be ignored.
Also, during the analysis, there are some beams which have KL/r ration greater than 200 (such as KL/r = 300). AISC 360-05, Chapter E “recommends” the ratio less than or equal to 200 for compression beam. For WF-beams I don’t see any issue with KL/r >200 recommended values provided that difference is not great. Any experience with higher ratios or pitfalls?
Thanks,
FEM4Structures
Also, during the analysis, there are some beams which have KL/r ration greater than 200 (such as KL/r = 300). AISC 360-05, Chapter E “recommends” the ratio less than or equal to 200 for compression beam. For WF-beams I don’t see any issue with KL/r >200 recommended values provided that difference is not great. Any experience with higher ratios or pitfalls?
Thanks,
FEM4Structures