Why Some Roadways Are Made of Styrofoam

From “Practical Engineering”. ( YouTube / Nebula )

What do you do when soil is too heavy for the job? Use lightweight backfill!
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Over the years, engineers have come up with a lot of creative ways to mitigate the settlement of heavy stuff on soft soils, but one of those solutions seems so simple that it’s almost unbelievable: just make embankments less heavy.

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Practical Engineering is a YouTube channel about infrastructure and the human-made world around us. It is hosted, written, and produced by Grady Hillhouse. We have new videos posted regularly, so please subscribe for updates. If you enjoyed the video, hit that ‘like’ button, give us a comment, or watch another of our videos!

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