HI Plumber study materials
HI Plumber study resources

HI Plumber case studies

HI Plumber · Put your knowledge to work in context.

The Hawaii plumber licensing exam is the state's credentialing path for tradespeople who install, alter, and repair potable water, drainage, waste, and vent systems in Hawaii. It is aimed at journeyman-level plumbers seeking licensure and at master plumbers or contractors who intend to supervise work and hold a plumbing contractor license. The HI Plumber case studies are 5 cases and about 3,897 words.

1

Trench at Six Feet in Kailua

You are the lead plumber on a sewer lateral replacement for a four-plex on a side street in Kailua, Oahu. cast iron lateral runs 40 ft from the building to the county sewer, under a 4 in.

791 words, about 4 min
2

Carport Conversion: Vent Sizing and a 14-Foot Trap Arm

You are called to a 1976 single-wall duplex in Hilo where the owner has converted a 240 sq ft carport into a studio. The new work adds a two-compartment laundry sink and a washer standpipe.

831 words, about 4 min
3

Top-Floor Showers on a 48 psi Morning

You are evaluating the domestic water system of an 18-unit, three-story walk-up in Honolulu. The Board of Water Supply meter delivers 62 psi static at 8 a.m., falling to 48 psi at the morning peak.

780 words, about 4 min
4

The Moonlight Job and the Lanai Water Heater

You are a journeyman plumber licensed in Hawaii, employed by a licensed plumbing contractor on Oahu. A property manager you know personally asks you to moonlight a job: replace a tub with a walk-in shower in a 1958 single-family rental, install a new pressure-balancing shower valve, and move the gas-fired water heater from an interior closet out to the covered lanai.

756 words, about 4 min
5

Repipe Bid: 24 Units and a 90-Day Price Hold

You are estimating a repipe for a 24-unit, two-story walk-up in Hilo. The 1972 copper has pinhole leaks, and the plans call for PEX in the walls with new 3/4 in.

739 words, about 4 min