What is the maximum number of clothes washers allowed on a three inch stack?

In the context of plumbing systems and the Omaha Plumbing Code, the maximum number of clothes washers that can be connected to a three-inch stack is determined by the fixture unit values assigned to various plumbing fixtures. Each clothes washer typically has a fixture unit value that contributes to the total load on the stack.

A three-inch stack is designed to support a specific number of fixture units, and clothes washers generally have a significant fixture unit demand due to their water usage and drainage requirements. Under normal circumstances, the code allows for a higher capacity on larger stacks, such as a three-inch stack, which can accommodate multiple clothes washers depending on their fixture units.

In many plumbing codes, including Omaha's, the maximum number of clothes washers permitted on a three-inch stack typically is three, highlighting the stack’s ability to handle the drainage from these fixtures without significant risk of overloading or backup. This capacity provides sufficient drainage flow while maintaining system efficiency and compliance with plumbing safety standards.

Thus, the correct response regarding the maximum allowed clothes washers on a three-inch stack aligns with the understanding of fixture units and the physical capacity of the plumbing system, confirming that three clothes washers can be safely accommodated.