Tunnel in Revit with Adoptive component

In Revit open Generic Model family template

Draw reference planes in front elevation, as shown

Insert parameter as instance

Below add further parameter as per your need

Flex it & check the parameter.

Draw the model lines & save the file

Open new family, Generic Model Adaptive

 

Insert the family created previously,

Put the families as shown in one horizontal plane,

Select all & hit Create Form/Solid Form

 This will create tunnel shape form

Change the parameters you added & see the results

Now load in the project file & place it in one of the level

Apply Wall by Face, to draw the wall on the face of the family loaded

After applying wall by face delete family & you can see tunnel shape