Practice Test GeeksS-13 - Certificate of Fitness for Citywide Standpipe Systems Practice Test
← All S-13 Flashcard Decks

Water Supply and Pressure Requirements Flashcards

7 cards from real S-13 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Water Supply and Pressure Requirements flashcards as text

  1. What is the minimum residual pressure required at the highest outlet of a Class I or Class III standpipe system in New York City during operation?

    Answer: 100 psi

    FDNY and NFPA 14 require a minimum residual pressure of 100 psi at the hydraulically most remote outlet for Class I and Class III standpipe systems.

  2. What is the maximum allowable pressure at any standpipe outlet hose connection to prevent hose control problems for firefighters?

    Answer: 200 psi

    NFPA 14 limits standpipe hose connection pressure to a maximum of 175 psi without a pressure-reducing device; NYC requires the outlet not exceed 175 psi, and many references cap unregulated flow at 200 psi—but the standard working maximum without PRVs is 175 psi per NFPA 14.

  3. Which water supply source is considered the primary supply for standpipe systems in most New York City high-rise buildings?

    Answer: Fire pump drawing from a suction tank

    In most NYC high-rise standpipe systems, a fire pump drawing from a dedicated suction tank provides the primary pressurized water supply to meet flow and pressure demands.

  4. What minimum flow rate must a Class I standpipe system be capable of delivering at the two most hydraulically remote 2½-inch outlets simultaneously?

    Answer: 500 gpm total

    NFPA 14 requires Class I and Class III standpipe systems to supply a minimum of 500 gpm total (250 gpm per outlet) to the two most remote 2½-inch hose connections simultaneously.

  5. A gravity tank used as a water supply for a standpipe system must have its bottom elevation at least how many feet above the highest hose outlet it serves?

    Answer: 25 feet

    New York City Building Code and NFPA 14 require the bottom of a gravity tank to be at least 25 feet above the highest standpipe outlet it supplies to develop sufficient static pressure.

  6. What is the purpose of a pressure-maintenance (jockey) pump in a standpipe water supply system?

    Answer: To compensate for minor system leaks and maintain system pressure without starting the main fire pump

    A jockey (pressure-maintenance) pump is a small pump that cycles on and off to maintain standpipe system pressure, compensating for minor leakage without activating the larger main fire pump.

  7. Under FDNY regulations, what is the minimum capacity of a suction tank that serves as the sole water supply for a standpipe system in a building over 100 feet tall?

    Answer: 7,500 gallons

    FDNY and NYC Building Code require a minimum suction tank capacity of 7,500 gallons to provide an adequate reserve water supply for standpipe operations in tall buildings.