AL Plumber case studies
AL Plumber · Put your knowledge to work in context.
The Alabama Plumber Licensing Examination is the credentialing exam used by the Alabama Plumbers and Gas Fitters Examining Board to qualify individuals for journeyman and master plumber licensure in the state. It is written for working plumbing professionals - apprentices finishing their field hours, journeymen ready to advance, and master candidates who intend to pull permits and supervise work - rather than for beginners entering the trade. The AL Plumber case studies are 5 cases and about 4,090 words.
1Basement Bathroom Addition on an Existing 3-Inch Building Drain
You are roughing in a basement bathroom group and laundry in an existing single-family house. The existing 3-inch building drain runs 42 feet at 1/4 inch per foot to the city sewer, and the 3-inch stack above it already serves a second-floor water closet (3 f.u.) and lavatory (1 f.u.).
715 words, about 4 min2Island Sink Venting: AAV Versus Loop Vent
A kitchen remodel replaces a peninsula sink with a 33-inch island sink. The floor is a post-tensioned slab that cannot be cut, and the island is 7 feet from the nearest wall.
858 words, about 4 min3T&P Valve Discharge on a Closed Water System
A 50-gallon residential gas water heater in a garage was replaced in kind. The house has a pressure-reducing valve at the meter set to 65 psi and a double-check backflow preventer, and the new heater has a check valve on the cold inlet.
789 words, about 4 min4Containment Versus Fixture Isolation in a Coffee Bar
A 1,200-square-foot coffee bar is being built out in a leased retail shell. The water purveyor requires containment backflow protection at the tenant meter.
779 words, about 4 min5Adding Range and Fireplace Load to an Undersized Gas Main
A 1950s house has 3/4-inch Schedule 40 black iron gas piping from the meter with a developed length of 40 feet to a tee that feeds an 80,000 BTU/hr furnace and a 40,000 BTU/hr storage water heater. Supply pressure at the meter regulator is standard low pressure, 7 inches water column, and the existing table values for 3/4-inch at 40 feet give roughly 130,000 BTU/hr.
949 words, about 5 min