NICET LEVEL 1 - WATER BASED LAYOUT PRACTICE EXAM LATEST
2026|2027 UPDATED QUESTIONS WITH DETAILED VERIFIED ANSWERS
(100%) | ALREADY GRADED A+
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.)
1|Page
, 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):
2|Page
2026|2027 UPDATED QUESTIONS WITH DETAILED VERIFIED ANSWERS
(100%) | ALREADY GRADED A+
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.)
1|Page
, 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):
2|Page
