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Thread: Force on Guy Lines Using Falling Derrick - Spreadsheet to calculate degree by degree?

  1. #1
    bgolitz
    Guest

    Force on Guy Lines Using Falling Derrick - Spreadsheet to calculate degree by degree?

    Hello, I want to raise a 90 foot long pole that is 5" in diameter using a falling derrick. I am interested in the force applied to the guys as it is raised up from the horizontal position to a vertical position say degree by degree. I would like to accomplish this in a spreadsheet. The material is 6063-T6. The 5" tube with a .052 wall weighs .951# per foot. And 4" with .050 wall weighs .73# per foot. Below is a simple drawing. Any assistance would
    be greatly appreciated. Thanks.

    Derrick.jpg

  2. #2
    Lead Engineer
    Join Date
    Aug 2013
    Location
    Houston TX USA
    Posts
    421
    To be honest, this sounds like an academic (homework) exercise rather than an actual application problem. Particularly since, even without the two shorter guy lines, the highest load experienced by the longest guy line at the beginning of the lift would be only 50 lbs.

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