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Recent content by czar07

  1. czar07

    DUAL SYSTEM IN STAAD

    Thank you very much Sye123, to sum it up, there will be two cases for each X & Y direction for Earthquake load, ( EQ-X & EQ-Y for moment frame, and another EQ-X & EQ-Y for shear wall). just want to clarify this "would be IGNORE STIFFNESS for plates if walls are modeled as plates ", will it be...
  2. czar07

    DUAL SYSTEM IN STAAD

    Could anyone help me about dual system in STAAD 1. How can I command Staad to carry 25% OF base shear on Moment frames and 75% on Walls? - do I need to create two models for each and anlayze? - use change command to analyze the system separately - or can I create separate loading for...
  3. czar07

    CODE CHECK STAAD-strong column-weak beam

    Thanks Sye123
  4. czar07

    CODE CHECK STAAD-strong column-weak beam

    hello Does STAAD check STRONG COLUMN-WEAK BEAM in steel analysis (special moment resisting frame)? thanks
  5. czar07

    STEEL-CONCRETE MOMENT FRAME

    Kootk & jayrod12 in the long run, it has been decided to bring it back with the original proposal which is steel moment frame. thanks for your help kootk, jayrod12 and this forum
  6. czar07

    STEEL-CONCRETE MOMENT FRAME

    for: 2.) I used 0.7reduction but for crack only, how could reducing stiffness be helpful in reducing steel requirements, especially for spans without intermediate columns? 3.) Not applicable, my columns are limited to 400mm How about precast slab along 11.45m (oneway distribution)?
  7. czar07

    STEEL-CONCRETE MOMENT FRAME

    thanks kootk but how can i solve this or how can i reduce the steel requirements if i can't make my columns more stiffer
  8. czar07

    STEEL-CONCRETE MOMENT FRAME

    jayrod12 & kootk why is it that in my structure, moments along global z-axis is bigger at upper floor than moments in the lower floor? and as a results, more reinforcements are required for the upper floors, Also I change my column from 400x400mm to 600x400mm (gf to first floor)just to...
  9. czar07

    STEEL-CONCRETE MOMENT FRAME

    Jayrod12, Kootk my beam depth limit is 700mm Thanks, I'm working on it
  10. czar07

    STEEL-CONCRETE MOMENT FRAME

    Im glad that you are willing to help me with this, thanks again kootK the final structure will be the original concrete gf column and steel frame for first floor, as insisted by the contractor (happens to be a close friend of our client) for the reason that it will be faster & no need for...
  11. czar07

    STEEL-CONCRETE MOMENT FRAME

    thank you so much kootK.. I appreciate your patience answering my questions, very helpful
  12. czar07

    STEEL-CONCRETE MOMENT FRAME

    thanks KootK, I appreciate your expertise & suggestion I really want to try encased columns but I'm on a time constraints and we are now going to proceed with concrete columns, and that model restraints & connection are my problem. Any thoughts about this; in option 1, steel column moment is...
  13. czar07

    STEEL-CONCRETE MOMENT FRAME

    Kootk if Im going to use option 2, and that girders are connected to steel columns, will it be ok to design the connection of steel column to concrete column the same with common connection in a pedestal concrete and it will be pinned connection in my analysis.? though in my case is not a...
  14. czar07

    STEEL-CONCRETE MOMENT FRAME

    Kootk thanks in option 1, I released moments on my Girder's since it will be just on top of concrete column, no instability problem and as a results, gf concrete columns reinforcement were reduced. is this ok? releasing moments on my girders, though deflection would be my next problem. Our...
  15. czar07

    STEEL-CONCRETE MOMENT FRAME

    hello, Newbie here, practicing my design career. I created a 2 story (recreational building) moment frame in which the ground floor columns are concrete and 1st floor beam and columns are steel (due to client requirements). Plan dimension is 12mx39m frame support = pinned 1st slab & roof =...
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