Paving roads for the future

[ad_1] The global road network is one of the largest systems ever built by man. In the United States alone, the total length of roadway exceeds 6.6 million kilometres – enough to circle the Earth 165 times. While relatively simple to build as compared to other structures – like skyscrapers or dams – the sheer scale of the global network makes road construction one of the largest sources of material consumption on our planet. While

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Why Tunnels Don’t Collapse

[ad_1] Tunnels play an important role in our constructed environment as passageways for mines, conveyance for utilities, and routes for transportation. But, excavating a tunnel underground in unstable material can lead to some dangerous situations, like the 2010 mining accident in Chile when 33 men were trapped deep in subsurface for more than 2 months. Rocks are heavy. That may seem self-evident, like many fundamental principles of civil engineering. But when you build things underground,

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