BETA ANGLE + SEISMIC DESIGN

Good morning,

I am facing a problem in the attribution of BEta angle.

This property disappears when i am restarting the program and reopening the STD file.

Is there any solution for keeping it ?

 

Image 1: BETA=0degmage 2: Beta=90deg

 Thanks in advance.

FT

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  • When you assign a beta angle, a command is recorded in the STAAD input file under the CONSTANTS heading. The command usually looks like

    BETA 90 MEMBER ....

    After you re-open the file, go into the editor and check whether the command is present.

  • OK thanks for this quick reply.
    now i have another question for beta angle and seismic design.
    Indeed, with configuration 1, i have only 13mm deflection in seismic design, whereas with config 2 it is coming 51mm.

    Config 1

     

    Config 2

     

    The main difference is that the upper beams have a beta of 90deg in the second configuration.

    I don't think mechanical behavior can explain this big difference in the deflection.

    Do you have an idea on why i am getting so much difference between the two designs?

     

    Thanks again

Reply
  • OK thanks for this quick reply.
    now i have another question for beta angle and seismic design.
    Indeed, with configuration 1, i have only 13mm deflection in seismic design, whereas with config 2 it is coming 51mm.

    Config 1

     

    Config 2

     

    The main difference is that the upper beams have a beta of 90deg in the second configuration.

    I don't think mechanical behavior can explain this big difference in the deflection.

    Do you have an idea on why i am getting so much difference between the two designs?

     

    Thanks again

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