I didn't detail the process of casting the foundations (the process of which can be found here). Most of the steel members are CHS (circular hollow section) and their sizes were selected based on my drafting experience.
For a simple structure like this, structural connections are mostly welding.
[updates]
I uploaded the 3D model of this animation to 3D Warehouse. Click image below to download.
[updates]
I uploaded the 3D model of this animation to 3D Warehouse. Click image below to download.