# Buckling length factors from stability analysis for rod sets/rod groups **URL:** \ **Category:** Product Support\ **Tags:** addon-structure-stability, feature-request, set-of-members, stability-analysis\ **Created:** [August 24, 2026, 9:40am UTC](https://community.dlubal.com/t/knicklangenbeiwerte-aus-stabilitatsanalyse-fur-stabsatze-stabzuge/4163 "2026-08-24T09:40:09Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![DeflectionPerfection](https://community.dlubal.com/user_avatar/community.dlubal.com/deflectionperfection/32/402_2.png) [@DeflectionPerfection](https://community.dlubal.com/u/DeflectionPerfection)\ **Post date:** [August 24, 2026, 9:40am UTC](https://community.dlubal.com/t/knicklangenbeiwerte-aus-stabilitatsanalyse-fur-stabsatze-stabzuge/4163/1 "2026-08-24T09:40:09Z")
Good day, In a current project, I need to carry out external buckling verifications after analytical formulas for overhead line construction with Dlubal. For this, I would like to use somewhat lower effective lengths than the structural height (beta=1.0) =\> my idea was therefore to use a linear stability analysis to determine the beta values =\> the problem that arises here is that I can only get the values for individual members and not for sets of members. ==\> Is there a way to output the effective length factors of the linear stability analysis for sets of members? I would be very pleased to receive your feedback, Best regards, Nick Böttcher ---
**Author:** ![matthias.meyer](https://community.dlubal.com/user_avatar/community.dlubal.com/matthias.meyer/32/70_2.png) [@matthias.meyer](https://community.dlubal.com/u/matthias.meyer)\ **Post date:** [August 24, 2026, 2:34pm UTC](https://community.dlubal.com/t/knicklangenbeiwerte-aus-stabilitatsanalyse-fur-stabsatze-stabzuge/4163/3 "2026-08-24T14:34:01Z")
Hello Nick, no, unfortunately that is not possible. As an alternative, instead of grouping multiple bars into a bar set, you could use a single bar as a bar set and use nodes of the type "On Bar" within this bar. ![image](https://community.dlubal.com/uploads/default/original/2X/3/3df0a1912f168299a0c690c5ead53b21f6d9e3ce.png) Best regards Matthias ---
**Author:** ![DeflectionPerfection](https://community.dlubal.com/user_avatar/community.dlubal.com/deflectionperfection/32/402_2.png) [@DeflectionPerfection](https://community.dlubal.com/u/DeflectionPerfection)\ **Post date:** [August 25, 2026, 6:33am UTC](https://community.dlubal.com/t/knicklangenbeiwerte-aus-stabilitatsanalyse-fur-stabsatze-stabzuge/4163/4 "2026-08-25T06:33:37Z")
Thank you very much for the response, fortunately, I was able to set kink lengths through other means. However, a desirable feature in the long term would be to also evaluate rod segments =\> for example, if I had been forced to use the workaround you described, it would not only have been very laborious to remodel but also a big disadvantage for my visualizations and the ability to check, since my "support" of the provisional mast actually consists of many "series components" that are assembled on site, and I like to represent some of the different parts colorfully differently =\> I would then be forced to either give up the possibility of recognizing my individual components that together form a bending-stiff support or to forgo the stability analysis. It would be great if both could be done in the same model in the long run. Best regards, Nick ![image](https://community.dlubal.com/uploads/default/original/2X/5/53a545f075d817e92138afb5ea18a7c70ded6008.png) ---
**Author:** ![matthias.meyer](https://community.dlubal.com/user_avatar/community.dlubal.com/matthias.meyer/32/70_2.png) [@matthias.meyer](https://community.dlubal.com/u/matthias.meyer)\ **Post date:** [August 25, 2026, 1:15pm UTC](https://community.dlubal.com/t/knicklangenbeiwerte-aus-stabilitatsanalyse-fur-stabsatze-stabzuge/4163/5 "2026-08-25T13:15:10Z")
Hello Nick, I understand! I will include this as a requested feature. Best regards, Matthias