A&P Power Plant Reciprocating Engines Practice Test

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A plumber is sizing a sanitary drainage system. What is the main purpose of using drainage fixture units rather than only pipe diameter?

To convert fixture load into a standardized sizing method To identify the brand of fixture being installed To eliminate the need for trap primers To determine only the water heater capacity

Correct Answer:

To convert fixture load into a standardized sizing method

Explanation:

Drainage fixture units provide a standardized way to express expected drainage load so pipe sizes and branches can be selected consistently.

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