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  1. cad1009

    Negative (-ve) Buckling Factors

    @ukbridge @ThomasH Thanks guys for your valueable advises, work isnt complete but things are shaping up, i checked buckling for main achres (without any internal members) & that resolved the -ve buckling factors. which was most likely due to tension in trusses & cross beams (still checking...
  2. cad1009

    Negative (-ve) Buckling Factors

    @ThomashH totally agree, analysis results shown were only to verify that buckling is no goning to cause problems, Initial imperfection i cannot estimate at the moment, depends highly on section procured and fabricator engaged, that was reason i was worried about structural buckling limits for...
  3. cad1009

    Negative (-ve) Buckling Factors

    @ThomasH self weight working up ?? i doubled checked that first thing when i got those -ve buckling factors .. :)
  4. cad1009

    Negative (-ve) Buckling Factors

    i have done an 4 Arch model on staad & performed buckling analysis. i am getting very large -ve buckling factors .... what do they mean, i know that buckling factor <1 means that member will buckle before the designed load, the snap shot attached below is for Self weight. (Plz See the Pic...
  5. cad1009

    100ft span Hollow Steel ARCH design

    i ran the model on staad & performed buckling analysis buckling i am getting very large -ve buckling factors .... what do they mean, i know that buckling factor <1 means that member will buckle before the designed load, the snap shot attached below is for Self weight. (Plz See the Pic...
  6. cad1009

    100ft span Hollow Steel ARCH design

    Gents please help me out. i am designing a Steel hollow Arch Gate structure. Arch is 100ft support to support with 30ft height. Arch is serving the purpose of Entry gate with no dead load on top except facade glass pannels. I am modeling the Arch in STAAD. to design the pipe section what should...

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