SP16.13330.2011 Design error

Hi,

I am doing design of Gantry steel structure using STAAD.Pro slect series 6 for Russian standard SP16.13330.2011.

After analysis was done, I am getting Error report like below:

8 CAN NOT BE CHECKED BY BUCKLING 

FACTOR "FIB" CAN NOT BE DEFINED BY SP16.13330.2011  

FOR THIS CROSS SECTION (look at appendix G) * WARNING * 

* 8 CAN NOT BE CHECKED BY BUCKLING 

FACTOR "ETA" CAN NOT BE DEFINED BY SP16.13330.2011  

(look Table E.2) * WARNING * 

ELEMENT WAS DESIGNED FOR STRENGTH ONLY 

8 L L120X120X10 PASS SP cl.7.1.3 0.36 13  

1.352E+02 C 0.000E+00 0.000E+00 0.000E+00

This error is happening only to the Main leg member and for bracing and tie members there are no errors.

I am able to see the report on ANL file but unable to go for "Postprocessing".

I need help to solve the following two issue:

1. Remove errors on buckling.

2. Postprocessing.

Thank you in advance

Parents
  • 1) * 68 GENERAL STABILITY CAN NOT BE CHECKED FACTOR "FIB" CAN NOT BE DEFINED BY SP16.13330.2011 FOR THIS CROSS SECTION (look at appendix G) * WARNING *

    This warning tells that some factors in the appendix G of the code are out of the ranges, so these members will not be checked for buckling.

    This warning is reported for the angle sections subjected to eccentric compression or eccentric tension. In case of eccentric compression and eccentric tension of unsymmetrical sections the coefficient FIB is not defined in Russian codes. STAAD.Pro cannot calculate these values for this type of section, hence - reports an error or a warning. If the section would be changed, let's say, to I beam, these warnings would disappear.

    2) Try to copy the model (.std file) into a completely new folder and run the analysis again. If that does not help, let us know the exact STAAD.Pro version which you are using and attach the related model if possible.



Reply
  • 1) * 68 GENERAL STABILITY CAN NOT BE CHECKED FACTOR "FIB" CAN NOT BE DEFINED BY SP16.13330.2011 FOR THIS CROSS SECTION (look at appendix G) * WARNING *

    This warning tells that some factors in the appendix G of the code are out of the ranges, so these members will not be checked for buckling.

    This warning is reported for the angle sections subjected to eccentric compression or eccentric tension. In case of eccentric compression and eccentric tension of unsymmetrical sections the coefficient FIB is not defined in Russian codes. STAAD.Pro cannot calculate these values for this type of section, hence - reports an error or a warning. If the section would be changed, let's say, to I beam, these warnings would disappear.

    2) Try to copy the model (.std file) into a completely new folder and run the analysis again. If that does not help, let us know the exact STAAD.Pro version which you are using and attach the related model if possible.



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