Well, I don't know what the trussing standards are. But ADJ and their other company, Global Truss, should be able to steer you in the right direction.
Of course, the ADJ solutions are inexpensive. They are designed more oriented for "starting out", but at the same time is rugged and durable, but will lack features you want later, such as super strong and higher weight limitiations.
I would assume that to deal with trussing standards, you'd need to cite something rather specific.
Like for example, I would NOT go further than 15" with ibeam trussing. With the Duratruss, I'd probably say the same thing. I've not stepped into the Global Truss realm because it's too expensive for me, but I'd trust that way further.
It comes down to the followng things:
How long a truss do you want? How do you intend to support it? If using tripods or other ground-mounted solutions, is it going to be safe? Will your mounting solutions bear the load and not fall over?
An issue I had an an event is I went for safe, the idiot promoter went for "anything BUT safe". I had my tripod legs spread way out for safetly, and then he pushed them way in. He's super lucky it didn't fall over. I was very unhappy about that.
I think the main concerns would be weight capacity(get an engineer friend to do the math for you if you need help) as well as safe mounting solutions, especially when using stands of any sort. My thoughts are that it's not a "trussing code" standard, but probably more of a fire marshall and/or safety standards concerns.
YOu do get what you pay for. With the medium duty crank stands and square or triangle trussing from Global Truss, you can get a LOT of options. I know a company that I think used the heavy duty crank stands and 40-feet of square trussing for an outdoor even and it went really well. Not sure of the brand, but I could call them up and ask. They do carry Global Truss as a brand they resell.