Storyboards, why? Part 1

On the Chicago World fair 1893, it was decided that the fair would only be open during the summer months. After the fair, all the buildings would be torn down. So, they didn't build for the winter. The roofs, for example, weren't built for snow load. So what happened? Well, even if the fair was in the summer, the buildings took some time to be completed. AKA, the buildings were built the autumn 1892. So, the roofs fell in during the winter before the fair. The whole story wasn't discussed, only the use case.