Which pipe material has the highest maximum vertical bracing distance according to the standards?

The maximum vertical bracing distance is crucial for ensuring stability and support for piping systems. Cast iron, known for its rigidity and structural integrity, can typically withstand the stress and load without significant deflection. This durability allows for a greater spacing between bracing points compared to other materials.

In contrast, while materials like ABS, copper, and PVC are commonly used in plumbing systems, they may have lower maximum vertical bracing distances due to their physical properties. ABS and PVC, for example, are lighter and more flexible, making them more prone to sagging or movement unless supported more regularly. Copper, while strong, is often limited in length for vertical supports based on its size and flexibility, particularly in larger diameter pipes.

Therefore, when considering the need for stability and adherence to plumbing standards, cast iron pipes are favored for having the highest maximum vertical bracing distance, ensuring that they remain secure and properly aligned over longer spans.