What method is used to size the ejector pump?

The water supply fixture unit method is utilized to size the ejector pump because it systematically accounts for the anticipated demand imposed by plumbing fixtures. This method assigns a fixed number of fixture units to each type of fixture based on its flow characteristics and usage patterns.

By applying this method, designers can effectively calculate the total load that the ejector pump will need to manage. It enables a comprehensive understanding of how many fixtures will be contributing to the system’s operational requirements at peak times. By knowing the total water supply fixture units, a proper size for the ejector pump can be selected to ensure efficient operation without overloading the system. This prevents potential issues such as pump failure or inadequate drainage.

In contrast, the other methods focus on different aspects of water flow or demand assessment that do not specifically pertain to sizing the ejector pump in relation to fixture demand. Understanding this method is crucial for ensuring that plumbing systems operate efficiently and effectively, particularly in high-demand scenarios.