# Modify Roof Truss Type

* Select a truss which is created with the **Truss Builder** and select **Modify Roof Truss Type** directly from **Truss+** menu

![](/files/b5fJqOzzsNMRW5yD5rwl)

* Modify bottom chord parameters and web design in the graphical window of **Truss Builder**
* You can overwrite existing truss with new design or create a new Truss Family

![](/files/1Fz91UtYYc57h60QGvfv)

![](/files/W1jJefZlxJOHpgiKEb0Z)


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