The full-size 21x24 inch pdf of the Tricorner Arena. 154.3 MB
This is the full-size PDF without gridlines. 145.9 MB
The Tricorner Arena as an Inkscape SVG file. Much smaller, and you can mess with it as you like. 26.2 MB
I don't have access to a large-scale printer, so I divided the arena into six standard-sized pages. This and the following 11 PDFs are those pages, the first six with and the other six without gridlines.