Help!! Pole barn for airplane hanger

[pdgregg]

Please help, I am trying to design a pole barn that is 40x40x12 enclosed metal truss pole barn to use for a airplane hangar. What would be the best way to eliminate poles for one 40' gable end? Could I use two 20' bar joists to secure the opening?


Georgia Resident

 

[mtwaterguy]

Just use 40' trusses. My 40 x 96 is open span