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Results for: Language English Remove constraint Language: English Resource Type Video Remove constraint Resource Type: Video Year 2018 Remove constraint Year: 2018

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  • Video 
    Why Bridges Move...

    Why Bridges Move...

    This video explains why ridges move, and other musings on thermal movement of large civil works. Most people have a certain intuition about thermal expansion, but you may not have considered how engineers design to accommodate it on large civil structures. The video gives a quick overview on this important consideration that engineers must account for when designing infrastructure like pipelines, bridges, and even sidewalks.

    Subjects:
    Structural Engineering
    Keywords:
    Structural analysis (Engineering) Expansion (Heat)
    Resource Type:
    Video
     
  • Video 
    Why Tunnels Don't Collapse

    Why Tunnels Don't Collapse

    This video shows how simple reinforcement is used to prevent collapse of rock tunnels. Tunnels play an important role in our constructed environment as passageways for mines, conveyance for utilities, and routes for transportation. Rock bolts are a type of reinforcement for stabilizing rock excavations, usually made from steel bars or bolts. This simple construction method dramatically reduces the cost of making tunnels through rock safe from collapse.

    Subjects:
    Structural Engineering
    Keywords:
    Underground construction Rock bolts Tunneling Tunnels
    Resource Type:
    Video
     
  • Video 
    Why the Tacoma Narrows Bridge Collapsed

    Why the Tacoma Narrows Bridge Collapsed

    Wind can be one of the most critical and complicated loads on civil structures. The case of the Tacoma Narrows bridge is a well-known cautionary tale that’s discussed in engineering and physics classrooms across the world. Both resonance from vortex shedding and aeroelastic flutter contributed to the failure. When you push the envelope, you have to be vigilant because things that didn’t matter before start to become important (e.g. wind loads on lighter structures). Unanticipated challenges are a cost of innovation and that’s something that we can all keep in mind.

    Subjects:
    Structural Engineering
    Keywords:
    Washington (State) -- Tacoma -- Tacoma Narrows Bridge (1940) Suspension bridges Wind-pressure
    Resource Type:
    Video