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100+ Free Plumbing NC II Practice Questions
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2026 Statistics
Key Facts: Plumbing NC II Exam
₱1,888
Assessment Fee
TESDA Circular 072-2021
Medium-rise
Typical Scope
Plumbing NC II TR
Competency
Passing Standard
TESDA
5 years
NC Validity
TESDA
TESDA Plumbing NC II certifies installers for multiple plumbing units in medium-rise buildings, including leak testing and repair. Fee ₱1,425 (Jan 2021).
Sample Plumbing NC II Practice Questions
Try these sample questions to test your Plumbing NC II exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1In TESDA Plumbing NC II unit CON712348, what is the primary purpose of preparing estimation of materials for multiple plumbing units?
A.To quantify and list all materials, tools, and equipment needed for installing multiple plumbing units in a medium-rise building
B.To install hot- and cold-water piping on site without referring to plans
C.To conduct hydrostatic pressure tests on completed water lines
D.To replace defective fixtures after occupancy
Explanation: CON712348 covers estimating required materials for multiple plumbing units, including reading plans, interpreting legends, and preparing bills of materials for client presentation.
2On a plumbing plan, the abbreviation "CWL" typically stands for:
A.Cold Water Line
B.Coupling With Locknut
C.Concrete Wall Lining
D.Central Waste Lateral
Explanation: Per the TESDA Plumbing NC II Range of Variables, CWL is the abbreviation for Cold Water Line used on plumbing drawings and legends.
3A plumber estimates 12 identical lavatory rough-ins on one floor, each requiring 3 meters of 15 mm cold-water branch piping. How many meters of 15 mm pipe should be listed before fittings allowance?
A.36 meters
B.15 meters
C.12 meters
D.48 meters
Explanation: 12 units × 3 m each = 36 m of branch piping. Fittings allowance would be added separately per job requirements and estimation practice.
4When preparing a bill of materials for multiple water closets on several floors, which document should be consulted first to determine fixture specifications and rough-in dimensions?
A.Approved plumbing working plans and manufacturer fixture data
B.Only the electrical riser diagram
C.The painting schedule
D.The landscaping plan
Explanation: Estimation requires determining measurements and specifications from approved plans and details, then matching fixture models to job requirements.
5A medium-rise building has 8 floors with 4 hose bibbs (HB) per floor. How many hose bibbs must appear on the fixture schedule and material estimate?
A.32
B.12
C.8
D.4
Explanation: 8 floors × 4 hose bibbs per floor = 32 hose bibbs total for the multiple-unit takeoff.
6Which plan type is included in the Range of Variables for Plumbing NC II material estimation?
A.Plumbing plan, structural plan, architectural plan, and mechanical plan
B.Only the furniture layout plan
C.Traffic management plan only
D.Farm irrigation layout
Explanation: TESDA TR lists plumbing, structural, architectural, site development, mechanical, and electrical plans as sources for estimation.
7A takeoff shows 45 m of 50 mm cold-water riser (CWR) plus 10% waste allowance for cuts and misalignment. What length should be ordered?
A.49.5 meters
B.45 meters
C.50 meters
D.40.5 meters
Explanation: 45 m × 1.10 = 49.5 m. Estimators commonly add waste allowance before listing purchase quantities.
8The symbol "FD" on a plumbing drawing most commonly represents:
A.Floor drain (flat type)
B.Fire door
C.Foundation detail
D.Flow detector
Explanation: In TESDA plumbing legends, FD denotes a floor drain of the flat type used in sanitary drainage layouts.
9When summarizing estimation results for client submission per CON712348, what must the plumber present?
A.Bill of materials and cost estimates based on quantified materials, tools, and equipment
B.Only verbal confirmation without written quantities
C.A leak-test report from the drainage system
D.A welding procedure specification
Explanation: The competency requires quantifying and listing materials, then presenting bill of materials and cost estimates to the client.
10A 6-floor medium-rise needs 2 kitchen sinks per floor. Each sink requires one P-trap, two angle stops, and 4 m of 20 mm supply tubing. How many P-traps should be estimated?
A.12
B.6
C.2
D.24
Explanation: 6 floors × 2 sinks per floor = 12 sinks, therefore 12 P-traps (one per sink).
About the Plumbing NC II Practice Questions
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