the problem with 4" rigid is the wieght.it would take 4 people to lift 2-4" rigid pipes even without the panels.
i dont know if you have ever tried to lift that size post by yourself.i do appreciate your comments it has been determined by engineer that 2.5 will carry 140mph wind load.
besides...
i am being told by the engeneer on my job that2- 2" rigid galvaniZed steel 4' 6" tall and concreted 24" into ground with 1' bases will not hold a 140mph wind load calc. can any one confirm this or recommend a site that will help me?
i have looked at other load calcs and found that it would, but...