Ep 8. Conquering Avalanche Country

In episode 8 of season 7 of Impossible Engineering, viewers are taken on a journey through the treacherous terrain of avalanche country. This episode delves into the challenges faced by engineers tasked with constructing vital transportation infrastructure in areas prone to devastating snow slides and other natural disasters.

The episode starts by introducing the importance of avalanche protection structures, particularly in regions where winter snowfall can be heavy and persistent. As we see through stunning aerial shots, the beautiful yet perilous terrain of mountainous regions can be highly dangerous for travelers and infrastructure alike.

We learn that snow avalanches can reach speeds of 90 mph and have the destructive force to destroy entire towns. Avalanche control measures are therefore key to mitigating the danger they pose. A team of engineers share how they design specialized structures, such as snow sheds and avalanche barriers, to withstand the extreme pressures from avalanches.

We then follow the construction process of these structures, which requires meticulous planning and a deep understanding of the physical forces at play. The importance of correct snow accumulation predictions is also highlighted, as understanding the behavior of snow is crucial in determining the design requirements for these protective structures.

The show then explores some of the technological innovations being used to improve avalanche protection structures. We learn how systems such as drones and lasers are being used to obtain more accurate topographical data and snow depth measurements. This technology helps ensure that structures are placed in the optimal locations to protect vital infrastructure, such as highways, railways, and towns.

As well as snow sheds and barriers, the episode explores other types of protective structures, including avalanche towers and howitzers. Avalanche towers operate as automated systems that detect and mitigate avalanches as they occur. Howitzers are cannons that fire shells into snow deposits to trigger controlled releases of the snow and reduce the likelihood of an unplanned avalanche.

The team of engineers then discuss the immense challenges they faced when designing and building avalanche protection systems in remote and isolated areas. Accessing such remote locations required the use of helicopters, snow vehicles, and teams of specially trained engineers. The episode highlights the difficulties of working in this unpredictably harsh environment and the importance of working together as a team.

Finally, the episode draws to a close with a reflection on the impact that avalanche protection structures have on people's lives. We hear first-hand accounts from individuals who have been impacted by avalanches, and it becomes clear that the work of engineers in this field is vital in safeguarding the lives of those living in avalanche country. The show ends with a poignant reminder of the importance of continued innovation and investment in this vital area of engineering.

In summary, this episode of Impossible Engineering provides a fascinating insight into the challenges faced by engineers working in avalanche country. Through stunning visuals and expert insights, we gain a deeper understanding of the measures required to protect vital infrastructure and save lives in this dangerous environment. It is a must-watch for anyone interested in the intersection of engineering and the natural world.