Plumbing NC II case studies
Plumbing NC II · Put your knowledge to work in context.
Plumbing NC II is a Philippine national certificate under the Technical Education and Skills Development Authority (TESDA) system, awarded to workers who demonstrate the competencies required to install, test, maintain, and repair plumbing systems on residential, commercial, and light industrial projects. It suits plumbing helpers and trainees who want formal recognition of their skills, experienced tradespeople who need a certificate for employment or overseas work, and vocational graduates building a verifiable credential. The Plumbing NC II case studies are 5 cases and about 3,405 words.
1Dizzy Helper and a Gasoline Pump in a Basement Sump Pit
A four-person crew is converting a basement pump room in an occupied six-storey office into a sump pit. The pit is 1.2 m deep and 0.8 m wide, left open overnight with about 150 mm of stagnant water at the bottom.
656 words, about 3 min2Conflicting Slope and Vent Size on a Dormitory Drainage Drawing
During a four-storey dormitory fit-out, the drainage crew is about to install a 14 m horizontal 100 mm diameter soil branch that serves six water closets and connects to a 100 mm soil stack. Plan sheet P-201 shows the branch at a 2.0% slope.
650 words, about 3 min3Setting Out a Tiled Bathroom With a Misplaced Drain Stub
On a hotel refurbishment, a 2.40 m by 1.80 m bathroom has already been tiled: 20 mm of plaster and tile on each wall and 10 mm floor tile. The 1:50 plan shows the water closet centerline 400 mm from the right structural wall and 700 mm from the back structural wall; the lavatory centerline is 400 mm from the left structural wall and 500 mm from the back wall.
737 words, about 4 min4Weeping Threaded Joints During a 100 psi Hydrostatic Test
Two plumbers are making up a 50 mm diameter Schedule 40 galvanized iron cold-water line in a school utility building. They cut the pipe with a hacksaw, ream it, and thread it with a hand die.
698 words, about 3 min5Gurgling Shower and Sewer Odor After a Ground-Floor Renovation
Three weeks after a ground-floor bathroom renovation in a two-storey house, the owner reports a sewer smell every morning, gurgling from the shower drain when the first-floor water closet is flushed, and slow draining at the lavatory. The new shower has a 50 mm trap, the lavatory has a 40 mm trap, and the water closet is connected to an existing 100 mm cast-iron soil stack.
664 words, about 3 min