# Tunnel modelling with Dynamo

**URL:** <https://forum.dynamobim.com/t/tunnel-modelling-with-dynamo/34821>\
**Category:** Revit\
**Tags:** dynamo\
**Created:** [April 15, 2019, 3:51am UTC](https://forum.dynamobim.com/t/tunnel-modelling-with-dynamo/34821 "2019-04-15T03:51:05Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![Andrew\_Hannell](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/andrew_hannell/32/103315_2.png) [@Andrew\_Hannell](https://forum.dynamobim.com/u/Andrew_Hannell)\
**Post date:** [April 15, 2019, 11:10am UTC](https://forum.dynamobim.com/t/tunnel-modelling-with-dynamo/34821/7 "2019-04-15T11:10:08Z")

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For constant-profile tunnels such as TBM tunnels- then adaptive families are your best bet. To resolve the gap/overlap issue, then the easiest way is probably to nest a void family.

I’m not quite sure what you mean- but as far as I know, an adaptive family can only be given a category as shown below- not structural framing

 ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/0/0/002b16ad4dc0221a79d9e4db0ae547f5f0ab09d4.png)

You can put structural framing families along a 3D curve- say using StructuralFraming.BeamByCurve.

 ![6](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/4/0/408603dde3bb82ac9a97eda29aa78bfcce775e28.gif)

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