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Nicet Level 1 - Water Based Layout Exam 2025 Questions and Answers Toggle hangers shall be permitted only for the support of pipe __________ inches or smaller in size under ceilings of hollow tile or metal lath and plaster. ....ANSWER ...-1 2/2 in. (ref. NFPA 13 2016 Sec. 9.2.1.1.2. While conducting a flow test, the chosen hydrant should be ______ ....ANSWER ...-As close to the property where the sprinkler system is being installed. (Ref, NFPA 13 Sec. A.24.2.2. or NFPA 291) What formula is used to determine the discharge coefficiant relating pressure and flow rate? - ....ANSWER ...-K = Q / (Square root of P) What best describes a tree system? - ....ANSWER ...-Cross mains and the branch lines are not tied together, providing only one path of water flow. Factors that define Occupancy Group Hazard 2 include: - ....ANSWER ...-Quantity and combustibility of contents are moderate to high. Stockpiles of contents with moderate rates of heat release do not exceed 12 ft and stockpiles with high heat release do not exceed 8 ft (Ref NFPA 13 Sec. 5.3.2) …FOR STUDENTS ONLY…©️2025 ALL RIGHTS RESERVED… 1