1 | P a g e | © copyright 2024/2025 | Grade A+
Nicet Level 1 - Water Based Layout
Questions and Answers (Best Rated)
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.
✓ 1 2/2 in. (ref. NFPA 13 2016 Sec. 9.2.1.1.2.
While conducting a flow test, the chosen hydrant should be ______
✓ 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?
✓ K = Q / (Square root of P)
What best describes a tree system?
✓ 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:
Master01 | September, 2024/2025 | Latest update
, 1 | P a g e | © copyright 2024/2025 | Grade A+
✓ 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?
✓ NFPA 13 & 24 (Both in Chapter 10)
Which of the following should you inspect on an extension cord before each
use?
✓ The grounding prong & the insulation for nicks, cuts, or damage
________ indicates a mandatory req. according to NFPA definitions.
✓ Shall.
✓
✓ (Ref. NFPA 13 2016, Sec. 3.2.4.)
Master01 | September, 2024/2025 | Latest update
, 1 | P a g e | © copyright 2024/2025 | 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?
Master01 | September, 2024/2025 | Latest update
, 1 | P a g e | © copyright 2024/2025 | Grade A+
✓ 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):
Master01 | September, 2024/2025 | Latest update
Nicet Level 1 - Water Based Layout
Questions and Answers (Best Rated)
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.
✓ 1 2/2 in. (ref. NFPA 13 2016 Sec. 9.2.1.1.2.
While conducting a flow test, the chosen hydrant should be ______
✓ 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?
✓ K = Q / (Square root of P)
What best describes a tree system?
✓ 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:
Master01 | September, 2024/2025 | Latest update
, 1 | P a g e | © copyright 2024/2025 | Grade A+
✓ 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?
✓ NFPA 13 & 24 (Both in Chapter 10)
Which of the following should you inspect on an extension cord before each
use?
✓ The grounding prong & the insulation for nicks, cuts, or damage
________ indicates a mandatory req. according to NFPA definitions.
✓ Shall.
✓
✓ (Ref. NFPA 13 2016, Sec. 3.2.4.)
Master01 | September, 2024/2025 | Latest update
, 1 | P a g e | © copyright 2024/2025 | 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?
Master01 | September, 2024/2025 | Latest update
, 1 | P a g e | © copyright 2024/2025 | Grade A+
✓ 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):
Master01 | September, 2024/2025 | Latest update
