If you live in an earthquake zone, and you experience this kind of shaking,

you’ll know the importance of buildings that stay up even under duress, especially when the underlying structure of the building is weak.

We live in a fairly strongly built building with a lot of concrete and iron and we get shaken around quite a lot.

There are also many factories, workshops and stores that use a steel building structure to ease building costs, and complete construction faster. But you have to wonder how they stay up.

Odd thing is: I can’t remember seeing one that just fell down! Perhaps the steel is more flexible and strong than other kinds of structure.