I'm gonna classify this as crazy. Making my own antenna mast. Ordered some Red Grandis which is good for outdoors. Making a 5 1/2" x 5 1/2" x72ft tall antenna mast with torsion box construction. And it's going to be on a hinge so I can take it down for maintenance or severe weather. I had a 30ft section built and when I lifted it, it sagged about 1/8". Toughest part of the whole thing was trying to keep it straight as possible with crooked boards.
Lower section, split in two. The base is at the far end and when joined make about 30ft of length.
Trying to keep the top weight down I made a spire
The small part slips in 18" and will be glued and screwed like everything else.
Angle to let water and snow slide off.
Here's all the parts from the bottom side.
And all the parts from the top view.
Each length is about 23 feet with overlaps of about 7 feet.
And here's the hinge, my neighbor is going to weld up the square tube to the 1/4" plate steel and then it gets painted up. It'll sit on a concrete base held down by "J" bolts used in foundations.
Thinking about putting a 2500lb winch on it so it can be raised and lowered easily. Have to figure that one out though.
See.... crazy.