Hey, that's a really practical question! I've definitely seen people perch on public trash cans while waiting or taking a break. So, how much weight can they actually handle?
Honestly, there's no single answer. Most standard outdoor trash bins, especially those made of plastic like the common wheeled models, are not designed to support a person's weight. Their lids are meant to keep rain and animals out, not to be seats. A typical residential plastic lid might only support 25-50 pounds (11-23 kg) before cracking or the hinges failing. Sitting on it is a gamble.
However, some heavy-duty commercial or metal bins have much sturdier construction. A thick steel or reinforced aluminum lid might temporarily hold 150-200 pounds (68-91 kg), but it's still not advised. The bigger risk isn't just the lid—it's the entire structure. The bin can tip over, the plastic body can crack, or the hinge pins can snap, leading to a nasty fall and a broken bin.
The safest approach? Always check for a manufacturer's label or stamped weight rating on the bin itself. If you can't find one, assume it's not safe to sit on. It's better to find a proper bench than to risk injury and an expensive replacement.