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The Numbers Don’t Add Up
Posted by Geoff Weisenberger on October 1, 2007 at 9:28 AM.

A few months ago, I saw a press release with renderings of the Grand Canyon Skywalk and was very impressed. When I read through the release and saw the 71 million-lb, “71 fully loaded Boeing 747s” statistic, I punched a couple of buttons on my calculator and dismissed these claims as unfounded early Internet blab. To see the same stats in MSC (July 2007, p. 74), a respected industry publication, astounds me. I don’t know where those numbers came from, but they are undoubtedly false. I would be very surprised if the walkway’s live and dead loads totaled over two million lb past the edge of the cliff. Run a few quick numbers yourself.


David Soulier, P.E., Baton Rouge, La.

One Response to “The Numbers Don’t Add Up”

  1. Geoff

    MSC responds:


    The statistics mentioned above and in the article appear on the official web site for the Grand Canyon Skywalk (www.grandcanyonskywalk.com). However, other sources suggest that the Skywalk itself can support 70 tons and it is the foundation of the structure that can support approximately 71 fully loaded Boeing 747s.

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