thanks for the replys,
Oklahoma is the state. DOT they furnish the plates 100 dollars a set, but you cannot cut the straps there on site you have to take them to be saw cut and bring them back so they can bend the plates and etch the t joints. The third party test labs test for structrual and pipe, they supply everything from rods, plates or pipe nipples, and they cut and bend the straps.
rs