Plumbing NC I case studies
Plumbing NC I · Put your knowledge to work in context.
The Plumbing NC I is a national certificate in the Philippines, awarded through the Technical Education and Skills Development Authority (TESDA) system, that recognizes entry-level competence in plumbing work. It is intended for individuals seeking employment as plumbing assistants, maintenance helpers, or trainees on residential, commercial, and light industrial projects. The Plumbing NC I case studies are 5 cases and about 3,746 words.
1Trench Re-entry, Generator Exhaust, and a Helper Who Says He Is Fine
A three-man crew is replacing a collapsed 150 mm clay sewer line inside a public elementary school compound. The trench is 1.7 m deep and 0.8 m wide, cut through loose fill and old rubble, with vertical sides, no shoring and a slow seep at the bottom.
756 words, about 4 min2Under-Rated Abrasive Disc, Missing Guard, and a Live Circuit in the Beam
A maintenance crew must cut 40 lengths of 50 mm GI pipe and chase a 25 mm conduit slot 3 m long in a concrete beam inside an occupied house. Their only cut-off machine is a 355 mm portable abrasive saw whose nameplate gives a no-load speed of 4,300 rpm.
734 words, about 4 min3Conflicting Vent Size and an Invert That Leaves Almost No Fall
A two-storey residence is being plumbed from a set of drawings. Sheet P-2, the sanitary plan, shows the 100 mm PVC soil stack continuing through the roof as a 50 mm vent.
714 words, about 4 min4Six Lengths or Five: Take-off, Fall and Hanger Layout for a 100 mm Drain
A plumbing crew is laying out the horizontal 100 mm PVC building drain of a school canteen. The developed length from the upstream end of the run at the last wye to the base of the stack is 12.6 m, and the same 100 mm pipe continues up as a 3.0 m stack to the second-floor branch.
726 words, about 4 min5Gurgling Traps After a Bathroom Renovation
A bathroom in a renovated house has a water closet, a lavatory, a shower and a floor drain. After the renovation the owner reports that every time the WC is flushed the shower and lavatory traps gurgle loudly, and the shower trap loses its water seal so sewer smell enters the bathroom.
816 words, about 4 min