Re: Another flying issue
And if that triangle truss was designed to be a vertical tower and support a top-borne load (which it might be, we just don't have enough info), that ONE part of this contraption MIGHT be within spec. But how do we know for sure?
The problem with the strap is there is no obvious way to determine if the tension on the strap is equal to the force applied by the load sticking out past the tower's COG, born by the head block. This is why support towers typically user roller head blocks and sleeve blocks that ride up the tower - the load distributes equally. IF there was a dynamometer in line with the strap, we could do a little math and see how much tension would be needed. Then it would be necessary to apply that amount of force, monitoring it with the dyno, and for the strap and ratchet to continuously bear that amount of force with a safety margin of at least 5:1 if there were no humans in the possible fall zone; 7:1 or 10:1 is required in some jurisdictions.
Then we get back to the design of the head block.. how do we KNOW that the design shape, materials and construction are suitable without a professional engineer examining the design? What about proof of performance, i.e. destructive testing?
Just some things to think about...
