OK Plumber case studies

OK Plumber · Put your knowledge to work in context.

The Oklahoma Plumber License Examination is the trade examination administered through the Oklahoma Construction Industries Board (CIB), the state agency whose stated mission is to protect life and property by licensing and inspecting the related trades for the health, safety, and welfare of the public. Plumbing is one of the trades the CIB licenses alongside building inspectors, electrical, home inspectors, mechanical, and roofing. The OK Plumber case studies are 5 cases and about 3,686 words.

Second-Floor Shower Starved: Is It Pressure, Pipe Size, or the Valve?

A 1970s two-story, 2,300 sq ft house has a 5/8 x 3/4 in. Type L copper building supply with 80 ft of developed length (fitting allowance included), and a 1/2 in.

706 words, about 4 min 2

Basement Bath: A 12-Foot Trap Arm and a Sewer That Backs Up

You are roughing a bathroom group (water closet, lavatory, 36 x 60 in. shower) into the unfinished basement of a 1950s ranch on an existing slab.

806 words, about 4 min 3

Tankless Retrofit: Connected Load, the Meter, and the Closet

A homeowner wants to replace a 40 gal tank with a 199,000 Btu/h condensing tankless heater in a 6 x 8 x 8 ft mechanical closet, keeping the existing 100,000 Btu/h furnace and a 65,000 Btu/h range. The gas service is 3/4 in.

740 words, about 4 min 4

Weeping T&P Valve After the PRV Was Installed

A 50 gal, 40,000 Btu/h gas storage water heater installed in 2019 sits in a garage corner. Last spring the city replaced the main, static pressure in the house reached 105 psi, so a pressure-reducing valve was installed and set to 60 psi; the meter also has a check valve.

678 words, about 3 min 5

Inheriting the Handyman's Concealed Gas Line

A remodel contractor hires you mid-job to finish a basement. The permit on the property was pulled by the homeowner as an owner-builder and covers "finish carpentry and drywall." Behind the newly hung drywall you find a black-iron gas line the contractor's handyman installed to a new vented fireplace log set: a union inside the closed stud cavity, 12 ft of unsupported 1/2 in.

756 words, about 4 min