system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How/when are flat roofs feasible when lots of snow is expected? I'm seeing them at a ski resort right now.

I typically see in excess of a metre (3.28 ft) of snow buildup and I just noticed due to extremely poor snowfall this year that some of the roofs are flat. How is collapse prevented? Is the snow removed in some way?

Edit: I haven't found any doors so far but maybe I'm blind.
gpt
The roof is built to handle the weight of the (assumed) worst-case snow fall.

Every roof is engineered assuming some kind of load, usually spelled out in building codes. These can include rain, wind, snow, people walking around, etc. As long as the engineers planned for the snow, and the builders what they were supposed to, the roof is strong enough to hold up the snow indefinitely.