How much of the total washing machines must a commercial laundry drain be able to handle?

A commercial laundry drain must be designed to handle 75% of the total washing machines' capacity. This requirement is based on industry standards and plumbing codes that aim to ensure the drainage system can accommodate the peak flow generated by multiple washing machines operating simultaneously.

When several machines drain at once, the water volume can be substantial, leading to potential flooding or backup if the drainage system is under-sized. By requiring the drain to handle 75% of the total capacity, the system is built with a safety margin that reduces the risk of overflow and facilitates efficient drainage during peak usage. This consideration is particularly critical in commercial settings where high demand and continuous operation are expected.

Understanding this requirement allows plumbing professionals to design and implement systems that function effectively, adhering to regulations, and ensuring reliable operation in commercial laundry facilities.