NICET LEVEL 1 - WATER BASED LAYOUT EXAM / NICET
LEVEL 1 - WATER BASED LAYOUT PREPARATION/NICET
LEVEL 1 - WATER BASED LAYOUT PRACTICE EXAM WITH
COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A+|BRAND NEW
VER
Which of the following standards contain reqs. pertaining to the installation of underground piping? -
CORRECT ANSWERS-NFPA 13 & 24 (Both in Chapter 10)
What is the minimum operating pressure for any sprinkler? - CORRECT ANSWERS-The correct
answer is 7 psi. Reference NFPA 13 2016, Section 23.4.4.11.1.
Determine the maximum operating pressure for an Extra Hazard Group 2 sprinkler. - CORRECT
ANSWERS-The correct answer is 175 psi. Reference NFPA 13 2016, Section 23.4.4.12. The maximum
operating pressure for an Extra Hazard sprinkler is 175 psi.
Centrifugal pumps shall furnish not less than ____% - CORRECT ANSWERS-150, 65,140.
Reference NFPA 20 2016, Section 6.2.
Which of the following should you inspect on an extension cord before each use? - CORRECT
ANSWERS-The grounding prong & the insulation for nicks, cuts, or damage
________ indicates a mandatory req. according to NFPA definitions. - CORRECT ANSWERS-
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 ANSWERS-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.
100 gpm is flowing through 100' of 1 1/4in Schedule 40 pipe. How many feet of 1 1/2in pipe will produce
the same friction loss? - CORRECT ANSWERS-Step #1: 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
LEVEL 1 - WATER BASED LAYOUT PREPARATION/NICET
LEVEL 1 - WATER BASED LAYOUT PRACTICE EXAM WITH
COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A+|BRAND NEW
VER
Which of the following standards contain reqs. pertaining to the installation of underground piping? -
CORRECT ANSWERS-NFPA 13 & 24 (Both in Chapter 10)
What is the minimum operating pressure for any sprinkler? - CORRECT ANSWERS-The correct
answer is 7 psi. Reference NFPA 13 2016, Section 23.4.4.11.1.
Determine the maximum operating pressure for an Extra Hazard Group 2 sprinkler. - CORRECT
ANSWERS-The correct answer is 175 psi. Reference NFPA 13 2016, Section 23.4.4.12. The maximum
operating pressure for an Extra Hazard sprinkler is 175 psi.
Centrifugal pumps shall furnish not less than ____% - CORRECT ANSWERS-150, 65,140.
Reference NFPA 20 2016, Section 6.2.
Which of the following should you inspect on an extension cord before each use? - CORRECT
ANSWERS-The grounding prong & the insulation for nicks, cuts, or damage
________ indicates a mandatory req. according to NFPA definitions. - CORRECT ANSWERS-
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 ANSWERS-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.
100 gpm is flowing through 100' of 1 1/4in Schedule 40 pipe. How many feet of 1 1/2in pipe will produce
the same friction loss? - CORRECT ANSWERS-Step #1: 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
