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  1. D

    Bracing of concrete columns

    Yes, you're right. I tried to design it as continous 2 storey column, but then buckling length would be 2.18*11.3 m = 24.6 m which is too much - 50x50 cm is not enough in this case, and I cannot design bigger section at this time. Could you elaborate your approach? - how would you consider...
  2. D

    Bracing of concrete columns

    I ended up with something link this (see attachement). I was also thinking about making a stiff X brace from the slabs to the top of the columns, but I've decided that the bottom truss will be better. My only concern now is - how to check these bracing to be sure, that bottom part of my columns...
  3. D

    Bracing of concrete columns

    Concrete columns are the choice for this type of buliding because of the fire design (R60) - noone wants to paint steel column - general contractor I'm working with uses concrete columns in 90% of bulidings. Sorry, but I don't get what you've meant (could you sketch it?) - I consider X bracing...
  4. D

    Bracing of concrete columns

    You're right. I was searching for information about force that my bracing need to bear in case of concrete columns - there was a thread about something like that here on this forum. There was no real conclusions if it's different from steel columns - opinions were divided between 2% (as for...
  5. D

    Bracing of concrete columns

    Shear walls (from staircase) are very eccentrically positioned and I'm affraid of torsional moment: I think that diaphragm from concrete hollow core slabs is stiff (there is concrete between slabs, and it will be also connected to precast concrete beams by a cast-in-place ring beam) but I...
  6. D

    Bracing of concrete columns

    As I wrote, the connections are not stiff, precast beams are just laying on the column corbels (of course there will be 2#20 rebars to connect it) - I treat it as a pinned connection and in Robot concrete beams are pinned on both ends.
  7. D

    Bracing of concrete columns

    Hi, firstly I apologize for my english, but I hope you understand what I mean. I want to ask you about bracing concrete columns in a 2 storey building which I'm designing right now. Columns (50x50 cm in section) are precast and continous from foundation through the 1st floor level and to the...

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