That's an excellent and very practical question! When it comes to pedestrian plazas, finding the right trash bin size is a balancing act between capacity, aesthetics, and maintenance. Based on common municipal standards and urban design guidelines, the most popular size tends to be a 120-liter (approximately 32-gallon) bin.
This size hits a sweet spot for several reasons. It's large enough to handle the foot traffic and casual litter from snacks or drinks in a plaza setting without overflowing too quickly, which is crucial for maintaining a clean appearance. At the same time, it's not so massive that it becomes an eyesore or obstructs the flow of pedestrians. These bins are often part of a coordinated street furniture set, matching benches and bollards, and are frequently made of durable, vandal-resistant materials like coated steel or concrete.
It's worth noting that you'll often see a combination of sizes. A common strategy is to place the standard 120L bins throughout the seating areas, supplemented by smaller, more frequent "litter baskets" (around 40-60L) along major walkways for convenience. The key is frequent emptying; even the perfect size bin fails if it's not serviced regularly. So, while 120L is the workhorse, the most effective plaza design uses a thoughtful mix tailored to specific hotspot areas.