What are the acoustic properties of cast iron outdoor benches in public spaces?

Cast iron outdoor benches are a common feature in public spaces, valued for their durability and classic aesthetic. However, their acoustic properties are often overlooked. Cast iron is a dense material with low sound absorption, meaning it reflects rather than absorbs sound waves. In noisy environments like parks or urban plazas, this can contribute to sound reverberation, potentially increasing ambient noise levels. However, when combined with softer materials like wood slats or cushions, cast iron benches can achieve a balance between durability and acoustic comfort. Their heavy construction also minimizes vibration noise, making them stable and quiet under use. For urban planners, understanding these properties helps in designing public spaces that balance aesthetics, functionality, and sound management.