Element rotation accordance with given spline curve

Hello Everyone,

I am confronting an issue of calculating rotation angle series of family instances that are placed along the railway axis. I have solved partially, however I am hoping more better way than described in the video provided in this source.

Thank you so much for you contribute.

Best Regards,
https://www.youtube.com/watch?v=hIjjs1wWQRU

Hi @BatbayarH7U27

to calculate the rotation angel based on railway axis you have two way based on the way you handel the axis in dynamo revit:
1- if you accses the axsis (alignment and profile) from civil3d in this case you can use this node to get the cs at the


placement station

2-if you model the axsis as polyline in dynamo you can use these node to get the CS

all of these nodes you can use Brimohareb pak.

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