I am fortunate enough to work at a high school that still has a vocational agriculture program left (the State of Ohio tends to cut these programs). Long story ... well... long (sorry)... I am moving into a new school next year. I would like to have some truss to hang my fixtures from. When I priced it up I was stunned. We are a very poor district, but we have a place willing to donate lengths of tubing. My thought... our ag teacher is willing to partner up with me and my crew to teach them welding (I figured that would be a good skill to have... especially in our farm-based community). Our project is going to be welding and constructing our own truss work out of the donated pipe. Any suggestions you have AND any codes, safety issues etc. you can think of and tell me would be greatly appreciated. We have probably thought of every angle, but I want to be sure so that everybody is safe. Thanks! Tenor.