In the article “How Volcanic Ash Strengthens A
Roof Against Powerful Projectiles”, Williams (2019) states that the possibility
of adding layers of volcanic ash on the roofs could mitigate the impact of
volcanic projectiles on shelters around active volcanoes.
Williams claims that scientists found out
mountain huts were capable of providing life-saving shelter for hikers during
the eruption that took place at Mount Ontake, Japan 2014. This finding inspired
the scientists to further study on how the addition of volcanic ash on roofs
could reduce impacts of projectiles.
Through meticulous simulation, scientists
were able to deduce that the thickness of ash deposit is proportional to the
energy absorption rate. However, heavier loads of ash may affect the structural
integrity of the roof. Further investigation still needs to be conducted to
determine the optimum range of ash deposit layers, to achieve a balance between
reducing impact of projectiles and risk of roof collapse.
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