How does Prokon calculate imperfection moments in slender columns?

[dccd]

Homework Statement:: Anyone familiar with prokon column design ? I have no idea how the program caluculate the imperfection moment in the slender column (braced/unbraced...
Relevant Equations:: I have attached an example here , it's an unbraced slender column here. Why the imperfection moment about y-axis and y-axis arent the same ? X axis imperfection moment = 0.85kNm, while the y-axis imperfection moment is 4.41kNm,

[Mentor Note -- thread moved from the schoolwork forums to ME since it is a general question]

I think it's wrong, imperfection moment should be the same for both axis , at intermediate height, top , bottom of column, correct me if I am wrong. ...

https://we.tl/t-Fw9Tvf8fhL

 

[berkeman]

Homework Statement:: Anyone familiar with prokon column design ? I have no idea how the program caluculate the imperfection moment in the slender column (braced/unbraced...
Relevant Equations:: I have attached an example here , it's an unbraced slender column here. Why the imperfection moment about y-axis and y-axis arent the same ? X axis imperfection moment = 0.85kNm, while the y-axis imperfection moment is 4.41kNm,

I think it's wrong, imperfection moment should be the same for both axis , at intermediate height, top , bottom of column, correct me if I am wrong. ...

https://we.tl/t-Fw9Tvf8fhL

Can you just attach a PDF of that file? (Click "Attach files" below the Edit window) I'm getting strange notifications when I try to click on that link. Thanks.

 

[dccd]

Can you just attach a PDF of that file? (Click "Attach files" below the Edit window) I'm getting strange notifications when I try to click on that link. Thanks.

Here you go ..The uploading speed was extremely slow when I was trying to upload the file.

 

[Baluncore]

X axis imperfection moment = 0.85kNm, while the y-axis imperfection moment is 4.41kNm,

Because the column is rectangular, the slenderness is asymmetric, and so the imperfection moment is asymmetric.

 

[dccd]

Because the column is rectangular, the slenderness is asymmetric, and so the imperfection moment is asymmetric.

Do you know how to get the exact value
?

 

[Baluncore]

Do you know how to get the exact value ?

The Prokon design software must reference the standards and design rules it follows.
You should look for the design references on which the Prokon software is based.