# 3dec prestressed anchors

**URL:** <https://forum.itascainternational.com/t/3dec-prestressed-anchors/2370>\
**Category:** 3DEC\
**Created:** [April 8, 2026, 10:20am UTC](https://forum.itascainternational.com/t/3dec-prestressed-anchors/2370 "2026-04-08T10:20:42Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mariyanD](https://avatars.discourse-cdn.com/v4/letter/m/278dde/32.png) [@mariyanD](https://forum.itascainternational.com/u/mariyanD)\
**Post date:** [April 8, 2026, 10:20am UTC](https://forum.itascainternational.com/t/3dec-prestressed-anchors/2370/1 "2026-04-08T10:20:43Z")

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HI!

When i try to prestress cable bolts in 3dec, i get the following error:  
FEMLine::SetLsys(): fail to define local coord. sys.

While processing line 282 of source GUI Console

I have run a model without tension applied and run fine.

The anchors have free length and bonded. the free length has no grout cohesion and grout friction.  
they are imported from geometry.  
Any idea what can be the issue?

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**Author:** ![jhazzard](https://avatars.discourse-cdn.com/v4/letter/j/4af34b/32.png) [@jhazzard](https://forum.itascainternational.com/u/jhazzard)\
**Post date:** [April 9, 2026, 7:59pm UTC](https://forum.itascainternational.com/t/3dec-prestressed-anchors/2370/2 "2026-04-09T19:59:40Z")

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It’s hard to say without seeing the model. Please send a data file to [3decsupport@oneitasca.com](mailto:3decsupport@oneitasca.com)