NICET Level 1 - Water Based Layout Review Study Test.
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Course
Nicet
Institution
Nicet
NICET Level 1 - Water Based Layout Review Study Test.
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...
NICET Level 1 - Water Based Layout
Review Study Test.
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.
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.)
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:
y ft. x 0.317 psi/ft = 67.2 psi
y = 67.2 ÷ 0.317
y = 212 ft.
A basic contract: (choose all that apply) - CORRECT ANSWER Contains the names of the parties involved,
References the contract documents, Discusses the work that is to be done, and Discusses start and
completion dates.
Define both the constant, y, and the exponent ,z, for q in the Hazen-Williams friction loss formula shown
Below:
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