I have been looking at this for some time and have a extensive background in construction seems like using hog panels as a form would be ideal for a monolithic pour. I have not run the deadload calcs on it but I think it could work I will try and see if it works this spring!
Posts made by pepinpaint
Hog panels as forms
What are the forms made of I see the metal piping but what is the plastic like fabric on the sides of the arch it almost looks like some kind of tarp or rubber, I also see what looks like plywood and some kind of aluminum or melamine or steel shearing any help would be great!