This tutorial includes: 1. Adding Roof Purlins, 2. Creating Purlin Connections, 3. Multi-Copying Purlins with Purlin Connections & Mirroring.
source
This tutorial includes: 1. Adding Roof Purlins, 2. Creating Purlin Connections, 3. Multi-Copying Purlins with Purlin Connections & Mirroring.
source