Many old factory’s have these ‘wave-shaped’ roofs like [these](https://images.app.goo.gl/frvUChiF69q4fza87) . Do they have a special use to them?
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Thats just a cheap way to build a large roof that is still angled to allow rainwater to flow off easily.
Building it flat means you have to do more work with water drains.
Build it like a large triangle and it will get way too high.
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