Bug in Warping constant in AISC360-16 Chapter E.4 (STAAD.Pro ver.22.04.00.40 )

STAAD.Pro ver. 22.04.00.40

 

The correct Cw (Warping constant) value is not assigned by the members

 

I modeled all these members in the GUI. Other than PG(Plate Girder), I used American Property, and created User table about PG.

 

Here, I compared the nominal compressive strength by hand calculation and STAAD according to Chapter E of AISC360-16.

 

But, as you can see from the ANL file, the Cw value of the members from Member No.514 to No.564 is the same as the value of No.504.

(The Cw value of the No.514 to 564 members are not  correct.) 

 

What is the cause of this?

 

 

If the Member No.502, 503, 504(I-shaped) is excluded from the calculation, the Cw values of all members are correct.

 

And, If the Member No.502, 503, 504(I-shaped) was assigned to other than I-shaped and PG(e.g. angle, channel, tee etc.), the Cw values of all members are correct.

  

In the calculation sequence, I suspect that the Cw of the member following PG and I-shaped may not be assigned correctly.

8562.TEST1_SIMPLEMODEL.STD5287.TEST1_SIMPLEMODEL.ANL

PDF

Is it better to separate the calculation file (.STD) from other types of member for I-shaped and PG?

Best regards,

Parents Reply Children
No Data