Julia Austin Posted April 6, 2011 Report Share Posted April 6, 2011 Raising and lowering the tower requires two pulley-block lines and an additional ?dead end? line affixed to the gin pole rocker plate. A five-part line is necessary to ensure equal distribution of the tower lift load across the base plate. Without the five-part line, the two-fifths (2/5), two-fifths (2/5), and one-fifth (1/5) load distribution from the top to the bottom of the rocker plate is disrupted and can result in gin pole failure. Link to comment Share on other sites More sharing options...
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