Practice Test GeeksIPC - International Plumbing Code Practice Test
← All IPC Flashcard Decks

Traps, Interceptors, and Separators Flashcards

6 cards from real IPC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Traps, Interceptors, and Separators flashcards as text

  1. According to the IPC, what type of interceptor is required for dental offices?

    Answer: An amalgam separator

    The IPC requires dental offices to install amalgam separators to prevent mercury-containing dental amalgam waste from entering the drainage system.

  2. What does the IPC specify about the trap arm length between a fixture trap and its vent connection?

    Answer: The maximum length depends on the trap arm pipe diameter

    The IPC limits the trap arm length based on the pipe diameter — smaller pipes have shorter maximum trap arm lengths to maintain the trap seal.

  3. Under the IPC, when is a laundry interceptor required?

    Answer: In commercial laundry facilities that may discharge lint, string, or rags

    The IPC requires laundry interceptors in commercial laundry facilities where the discharge may contain lint, strings, rags, buttons, or other materials that could obstruct the drainage system.

  4. According to the IPC, what happens to the trap seal when a nearby fixture discharges a large volume of water rapidly?

    Answer: Induced siphonage can pull the trap seal out

    Rapid discharge from a nearby fixture can create negative pressure (induced siphonage) in shared drainage piping that pulls the water seal out of adjacent fixture traps.

  5. What does the IPC require when a building has both a food waste grinder (garbage disposal) and a grease interceptor?

    Answer: The grinder discharge must bypass the grease interceptor

    The IPC requires that food waste grinder (garbage disposal) discharge bypass the grease interceptor because the ground food particles would quickly fill and foul the interceptor.

  6. Under the IPC, what is the minimum frequency for cleaning a hydromechanical grease interceptor?

    Answer: When it reaches 25% grease capacity

    The IPC requires that hydromechanical grease interceptors be cleaned when the accumulated grease and solids reach 25% of the device's capacity to maintain effective operation.