Final answer:
The question involves calculating the total load in fixture units on a drain pipe after adding an ejector rated in amps. However, without a conversion factor between amps and fixture units, it is not possible to determine the new load accurately.
Step-by-step explanation:
The question posed relates to determining the new total load in fixture units on a horizontal drain pipe after adding a new discharge pipe from an ejector with a specific rating. When adding a new element to a piping system, the fixture units associated with that new element need to be added to the existing load of the system. In this case, an ejector with a rating of 60 amps does not directly translate to fixture units as electrical amperage and fixture units measure different things. Fixture units are a measure of the load a fixture adds to the plumbing, typically calculated based on the rate at which the fixture discharges into the drain system.
Therefore, without a clear conversion between the ejector's amperage and the fixture unit rating, it is impossible to provide an accurate fixture unit load. Fixture unit values are typically found in plumbing codes or standards that specify the load each type of fixture adds based on its flow rate and discharge pattern, not on its electrical usage. Adding an electrical discharge rating directly to an existing load measured in fixture units would be mixing incompatible units.