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shear wall design

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shear wall design

  • On the staad example no. 9 regarding shear wall analysis, the wall is connected to columns & beams using surface mesh command. could anyone help if we model it without columns & beams as most shear wall do in the building. because i tried modeling a 4storey building and using floor load, the load can't be read near the shear wall if without a beam attached to it.
  • You need to provide dummy members for floor load generation. Else, the load will not be generated. That is, floor load generation requires closed panels to be formed by beam entities, to succesfully generate the  loads

  • THANKS A LOT NIHESH FOR YOUR REPLY. MY NEXT CONCERN NOW IS HOW TO DESIGN THE FOUNDATION OF THE SHEAR WALL BECAUSE I TRIED IMPORTING AT STAADFOUNDATION THE GENERATED SUPPORTS FROM STAADPRO CAN'T BE SEEN AT STAADFOUNDATION. PLEASE HELP NIHESH ON THIS PROBLEM OF MINE.

     

    THANKS A LOT,

     

    WILLIAM

  • can you tell me which version of the STAAD FOUNDATION are you running? By the way, you need to run the analysis succesfully for the program to import the support details. If you can attach the STAAD file, I can give it a try

  •  NIHESH,

     

    THANK YOU ONCE AGAIN NIHESH FOR REPLYING MY CONCERN. I'M USING STAADPRO 2006 AND STAADFOUNDATION 3.5

    YES, I RUN FIRST THE STAADPRO BEFORE IMPORTING IT AT STAADFOUNDATION. THE REGULAR SUPPORTS REACTIONS APPEARED AT STAADFOUNDATION BUT WHAT I MEANT IS THE GENERATED IMAGINARY SUPPORTS AT THE BASE OF THE SHEAR WALL IN ORDER TO DESIGN ITS FOOTING, IT DIDN'T APPEAR AT STAADFOUNDATION. PLS CHECK MY MODEL (I EMAILED IT AT YOUR YAHOO EMAIL AD - DON'T KNOW TO ATTACH HERE )

     

    THANKS A LOT NIHESH. I'LL BE WAITING FOR YOUR KINDEST REPLY,

     

     

    WILLIAM

  • I havent received it yet. You may just zip the file and attach it by going to the options tab

  • 4_storey.zip

    Nihesh,

    Here's my file. Pls bear with me in this file so many load cases.

    Many thanks,

     

    william

     

     

  • Out of topic but just wonder how did you enter these load combinations? Have you exported .std from an another program.

  • IT SO HAPPENED THAT IT REACHED TO 150 PLUS LOAD COMBINATIONS BECAUSE THERE WERE TWO LOAD CASES FOR DEAD LOAD: LOAD CASE 5 & 6. IN LOAD CASE 5 WE ANTICIPATE FUTURE LOADS. WITHOUT IT PERHAPS THE GENERATED LOAD CASES WOULD HAVE BEEN 90 TO 100 ESTIMATED. THIS IS DONE USING THE COMMANDS LOADING EDIT AUTO LOAD RULES WHERE YOU CAN EDIT LOAD FACTORS BASED ON YOUR CODE. THEN GO BACK TO COMMANDS LOADING AUTOMATIC LOAD COMBINATIONS AND STAAD WILL BE THE ONE TO COMBINE THEM RESPECTIVELY. I EDITED THEN IT TO REPEAT LOADS ( ONLY THE WORDS FROM EXAMPLE:  LOAD COMBINATION 20 TO LOAD 20 AT STAAD EDITOR) TO MATCH THE CHANGE COMMAND WITH P-DELTA ANALYSIS TO CONSIDER SECONDARY STRESS.

    HOPE THIS EXPLAINS,

    WILLIAM

  • Hi William,

     When you have generate support command software provides the support internally. i have talked to my colleagues and come to the conclusion that this cannot be imported into foundation. The work around wil be to change the surfaces to plates with proper mesh and then provide supports at those specific nodes. An easier way to change the surface to corresponding plates.

    In short you will have to ,make two nodels, one for importing file TO STAAD FOUNDATION with plates and another with surfaces so that the design of shear wall may be performed.

    I hope this helps

    Regards

    Nihesh.N

  • Hi Nihesh,

    Thank you so much for your reply. I will try it with my model and give you update of the result.

    Regards,

     

    William 

     

  •  

    HI NIHESH,

    We have tried your suggestion and the result was fair. Thanks for your help. Hoping that in the next release of staadpro the surface meshing will have an option to display its nodes so we can put supports as needed in staadfoundation to be able to have just one model of shear wall in the structure.

     

    Regards,

    WILLIAM