Where is the definition of member length?
One of the reasons behind the hidden option of member length definition in version 9 (and newer) is because a lot of engineers asked for better error-proofness of IDEA StatiCa Connection. Very common “errors” were usually related to setting the incorrect length of the members, weld stress evaluation method, etc.
Using incorrect length of members can have a huge influence on results. In version 9 and newer, IDEA StatiCa Connection automatically sets an appropriate length of all members according to the assigned manufacturing operation.