NCCER Plumbing study materials
NCCER Plumbing study resources

NCCER Plumbing case studies

NCCER Plumbing · Put your knowledge to work in context.

The NCCER journey-level Plumbing assessment sits inside NCCER's National Craft Assessment and Certification Program (NCACP), which the source describes as offering over 50 knowledge- and performance-based assessments across crafts that include Plumbing. The source presents NCACP as a way for contractors to assess both the skills and knowledge of current craft professionals against industry standards, and it names the audiences: contractors and owners verifying journey-level competency before deployment, workforce development and training teams, HR and operations leaders building skills-based talent pipelines, and craft professionals seeking to validate experience and advance their careers. The NCCER Plumbing case studies are 5 cases and about 3,754 words.

1

Lavatory Gurgles After a Second-Floor Bath Remodel

A two-story remodel converted a former den into a full bath directly above the kitchen. The new water closet and lavatory tie into a 3-inch horizontal drain that runs 14 ft to the main 3-inch stack.

742 words, about 4 min
2

Pressure Test Drop on a 185-Foot Black Iron Gas Line

A crew is pressure-testing 185 ft of new 1-inch Schedule 40 black iron gas piping in a retail build-out. The system has 14 outlets, a 2-inch meter riser, and an operating-pressure regulator set at 7 in.

715 words, about 4 min
3

New Water Heater Weeping at the T&P Valve

A 50-gallon electric water heater was replaced in an 1,800 sq ft house served by a municipal main. The service has a 3/4-inch pressure-reducing valve set at 60 psi and a double-check backflow preventer at the meter.

744 words, about 4 min
4

Dishmachine Discharge Rejected by the Health Inspector

In a new 60-seat restaurant, a single-tank conveyor dishmachine with a 180 F final rinse discharges about 5 gpm through a 1-1/2-inch PVC line. The installer tied the discharge directly into a 2-inch floor sink drain with a 1-1/2-inch trap.

781 words, about 4 min
5

Sewage Ejector Short-Cycles With Fixtures Idle

A basement bath addition drains to a 24-inch by 24-inch fiberglass simplex basin with a 1/2 HP submersible sewage pump. The 2-inch discharge runs 20 ft horizontal and then 12 ft vertical into a 3-inch gravity line.

772 words, about 4 min