Beam deisgn for different effective length


The design base on single span beam of effective length 5.46m failed. However, when the beam is break into 3 segment with each length 1.83m, the design showed it passed, eveb when specified the effective length ration a 3.

Please clarify the reason for this irregularity. How also to model it correctly.

Thank you.




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Thank you.
DK Lee

Hi Mr Lee,

I cannot see your explanation to the problem. Is it resolved and explained?


The design is affected by the unbraced length which is determined from the element length by default. Thus, if one element is divided into smaller elements, the unbraced lengths of each element become shorter. In this case, it is recommend to make the divided elements into one member using the Design>General>General Design Parameter>Member Assignment function. Then, the unbraced length will be taken from the member dimension instead of element. After this revision, the design result will show NG regardless of the division.

Creation date: 8/2/2018 10:55 PM      Updated: 8/3/2018 8:25 AM
design ouput for 3F-3Bx12B.pdf
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design ouput for 3F-3Bx12B - rev1.pdf
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3F-3Bx12B worker quarter.mgb
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3F-3Bx12B worker quarter-rev1.mgb
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