So what? All you need to do is make sure the structure can support the weight of the added snow load. Which entirely falls under the rubric of "practicality, technology, and efficiency".
That's not all you have to do. I'll let people who've owned houses in snowy climates amplify that.
In a building, water is your eternal enemy. Keeping it out of places where it doesn't belong accounts for a good part of the other things you have to do.
I am also familiar with the climate of Berlin, where it barely snows, and when it does snow, it only very rarely accumulates.