Jack Off Ute Canopy - DIY - Part 1

In "Part" 1 I cut all the material required and assemble the main frame.
I originally had two large tool box's bolted down to the Ute tray, which pretty much makes the Ute unusable. So I needed a way to remove (and reinstall) my tool box's quickly and easily so I can utilise the entire tray if needed.
The frame is built from 50mm x 30mm x 1.6mm Galvenised RHS Steel.
I have a lot of this size RHS so thought I should make use of it. The perimeter of the bottom/floor frame is two lengths welded together to give me the required strength and dimension. A single appropriately sized section would have been better but this RHS is what I had on hand.
I designed the canopy using Sketchup.