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  • SciTech

    The Indestructible Bridge

    By Posted on 8.28.2008 3 Comments

    Hillman Composite Beams $500,000 Time: 12 years
    Prototype | | | | | Product Last November, John Hillman stood beneath a bridge built with prototype plastic-and-concrete beams of his own design. Then he signaled for his team to release a nine-million-pound coal train. “You can do all the calculations you want; you can do tons of lab testing. But at the end of the day, you run a heavy-axle coal train over the bridge, and that pretty much tells you whether or not it’s gonna hold,” Hillman says. It didn’t budge.

    5.26.2008 at 09:05am - Comment by rsqrd

    I worked with John in 87 on a segmental cable stayed bridge north of Richmond Va. He had passed his EIT and the project was a finishing school of sorts. John was looking towards new technologies way back then but was also busy gaining strong design and construction experience. He had worked on other projects previously as well as through college. I lost contact with him but would hear from other friends that he was working on alternate forms of reinforcement as well as materials substitution for structural members. He used to joke that we should prove our structures the same way the russians did. By placing multiples of maximum dead load while the entire construction team from designers to labor stood under the structure. I haven't talked to John in 20 years but I'd stand under his beam and not think twice about it. Rick Earley

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