AM Tower Won't Fall Down

Discussion in 'Video Nest' started by Todd Thorin, Nov 11, 2011.

  1. Todd Thorin

    Todd Thorin Friend of the Community

    We went to demolish (3) 60 year old 245 foot AM towers. They were three different types. Tower 1 was a 24" face thin pipe leg with the same material for horizontals about every 4 feet. It had one rebar welded in for climbing rungs in between each horizontal. Tower 3 was a typical angle iron tower with about a 3 foot face. Tower 2 was a Windcharger with an 18" face. Single anchor each direction out about 60% of height. Everything is flat, angle legs, angle and strap horizontals and diagonals. The tower was standing on an insulator. The temperature was 38-42 degrees and winds were WNW 18-30 MPH. Tower 2 had to be dropped to the NW. Tower 1 and 3 came down just as planned, but tower 2 was propped up by the wind for a minute and 45 seconds before it fell over.

    It is truly bizarre to see a tower have one complete guy direction cut loose and remain standing. A minute and 45 is long enough to stand there and begin to wonder, "Now what?" As you watch the video, the anchor is cut right after the tower 2 video appears. You see the initial shake and then it recovers and stands back up and wobbles a bit. It leans into the wind and then straightens back up a time or two, then slowly falls over. The video is playing at 3x normal to emphasize the movement, but in real time it stood for 1 minute 45 seconds. Depending on your playback screen you might be able to see the guys on the left side, they really tell the story.

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