Sequential self-weight > Anomaly with column forces

[tanel]

I have attached a simple 10-story sample model that show very strange behavior of column forces when using sequential self-weight. Columns are in tension (see 2nd screenshot below) from the 6th story upwards. Why is this happening?

Dropbox link to Robot model: https://www.dropbox.com/s/n0fmtkm1drzbh2n/Test.rtd?dl=0

I am using Robot 2022 with the latest hotfix.

[okapawal]

Hi @tanel 

This issue has been reporte for RSA version 2022

https://forums.autodesk.com/t5/robot-structural-analysis-forum/problem-with-axial-force-in-case-sequ...

It has been resolved with Robot Structural Analysis Professional 2023 release.