When raising my 3 leg, no name tower. I used one line, using 3 pulleys.
This results in 3x mechanical advantage. Anchor points were 2 of the 3 legs
of the tower about 11 feet up. This represents about 1/3 of the tower
length. Tower is a light to medium duty tower that were frequently used
years ago before cable TV came to Long Beach Island, NJ. Tower was (2) 20
feet sections. I shortened top section by about 8 feet and
fabricated/welded a top plate. Tower is about 32 feet. 11 feet high anchor
point was my garage. I thought anchor point should be higher, but did not
have a suitable anchor point any higher. I used my 21 HP riding mower as
the source of power to pull the line. It worked, not sure how much of a
safety factor I had though.
Comments?
Bob
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