Nicet Level 1 - Water Based Layout
Exam Questions & Answers (Grade A+)
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. -
correct 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 ______
-
correct 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? -
correct answer ✅K = Q / (Square root of P)
What best describes a tree system? -
correct 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: -
correct answer ✅Quantity and combustibility of contents are
moderate to high.
,Nicet Level 1 - Water Based Layout
Exam Questions & Answers (Grade A+)
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)
Which of the following standards contain reqs. pertaining to the
installation of underground piping? -
correct answer ✅NFPA 13 & 24 (Both in Chapter 10)
Which of the following should you inspect on an extension cord
before each use? -
correct answer ✅The grounding prong & the insulation for nicks,
cuts, or damage
________ indicates a mandatory req. according to NFPA definitions.
-
correct answer ✅Shall.
(Ref. NFPA 13 2016, Sec. 3.2.4.)
, Nicet Level 1 - Water Based Layout
Exam Questions & Answers (Grade A+)
100 GPM is flowing through 100' of 1 1/4 in. Sch. 40 pipe. How
many feet of 1 1/2 in. pipe will produce the same friction loss? -
correct answer ✅Assume this is Schedule 40 pipe, C = 120. Use the
Hazen-Williams formula to calculate the friction loss for the 1 ¼ in.
pipe and the 1 ½ in. pipe.
For 1 ¼ in. pipe (ID = 1.38):
P friction loss = 4.52 x Q 1.85
c 1.85 x d 4.87
P friction loss = 4.52 x 100 1.85
120 1.85 x 1.38 4.87
P friction loss = 0.672 psi/ft
Exam Questions & Answers (Grade A+)
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. -
correct 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 ______
-
correct 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? -
correct answer ✅K = Q / (Square root of P)
What best describes a tree system? -
correct 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: -
correct answer ✅Quantity and combustibility of contents are
moderate to high.
,Nicet Level 1 - Water Based Layout
Exam Questions & Answers (Grade A+)
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)
Which of the following standards contain reqs. pertaining to the
installation of underground piping? -
correct answer ✅NFPA 13 & 24 (Both in Chapter 10)
Which of the following should you inspect on an extension cord
before each use? -
correct answer ✅The grounding prong & the insulation for nicks,
cuts, or damage
________ indicates a mandatory req. according to NFPA definitions.
-
correct answer ✅Shall.
(Ref. NFPA 13 2016, Sec. 3.2.4.)
, Nicet Level 1 - Water Based Layout
Exam Questions & Answers (Grade A+)
100 GPM is flowing through 100' of 1 1/4 in. Sch. 40 pipe. How
many feet of 1 1/2 in. pipe will produce the same friction loss? -
correct answer ✅Assume this is Schedule 40 pipe, C = 120. Use the
Hazen-Williams formula to calculate the friction loss for the 1 ¼ in.
pipe and the 1 ½ in. pipe.
For 1 ¼ in. pipe (ID = 1.38):
P friction loss = 4.52 x Q 1.85
c 1.85 x d 4.87
P friction loss = 4.52 x 100 1.85
120 1.85 x 1.38 4.87
P friction loss = 0.672 psi/ft
