Nicet Level 1 Water Based Layout Exam Practice Questions and Answers | Verified and Updated
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Course
Nicet Level 1 Water Based Layout
Institution
Nicet Level 1 Water Based Layout
Nicet Level 1 Water Based Layout Exam
Practice Questions and Answers |
Verified and Updated
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
Answer️️ -1 2/2 in. (ref. NFPA ...
Nicet Level 1 Water Based Layout Exam
Practice Questions and Answers |
Verified and Updated
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
,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.)
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
For 1 ½ in. pipe (ID = 1.61):
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 1.61 4.87
P friction loss = 0.317 psi/ft
Step #2: Determine the total friction loss for 100 gpm flowing through 100 ft. of 1 ¼ in.
Schedule 40 black steel pipe: 100 ft. x 0.672 psi/ft = 67.2 psi
Step #3: Determine the pipe length to produce the same friction loss in the 1 ½ in. pipe:
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