BOABC Plumbing Level I flashcards
BOABC Plumbing Level I · Build recall with a focused review session.
32 cards. Read the term and the definition here. The deck at the top of this page is optional.
- Building drain
- The lowest piping of a drainage system that receives waste from fixtures inside the building and conveys it to the building sewer, which begins outside the building wall.
- Building sewer
- The pipe that carries sewage from the building drain to the public sewer or private disposal system, beginning outside the building foundation wall.
- Trap seal depth
- The vertical distance between the trap weir and the top of the trap dip; the code requires a seal of 2 to 4 inches to prevent sewer gas entry.
- Vent stack termination
- A vent must extend at least 6 inches above the roof and at least 10 feet from any operable window, door, or outdoor air intake.
- Backflow prevention
- A device or assembly installed at a cross-connection between potable and nonpotable systems to prevent reverse flow and contamination of the drinking water supply.
- Fixture unit
- A dimensionless measure of the load a fixture places on the drainage or water-supply system, used to size pipe from code tables.
- Drain slope requirement
- Horizontal drainage pipe must slope at least 1/4 inch per foot for 2-inch and smaller pipe and 1/8 inch per foot for 3-inch and larger pipe.
- Cleanout location
- Cleanouts are required at the base of each stack, at the building drain and sewer junction, at direction changes over 45 degrees, and at intervals not exceeding 100 feet.
- Plan review purpose
- Plan review verifies that proposed plumbing work complies with the adopted code before a permit is issued and construction begins.
- Riser diagram
- A schematic drawing showing the vertical stacks, vents, and fixture connections in a plumbing system, used to verify venting and drainage layout during plan review.
- Water closet clearance
- A water closet must be at least 15 inches from its centerline to any side wall and have at least 30 inches of clear width in front.
- Demand load method
- A water-supply sizing method that totals fixture units, converts them to gallons per minute, and compares the result to pipe capacity at available pressure.
- Plan set completeness
- A plumbing plan set must include floor plans, riser diagram, fixture schedule, and connection point to the public sewer or private disposal system.
- Cross-check disciplines
- Plan review confirms that plumbing drawings align with architectural, structural, and mechanical drawings for penetrations, chases, and equipment locations.
- Vent distance check
- Plan review verifies that each trap's vent connection is within the code-allowed distance from the trap weir for the pipe size used.
- Water service location
- The plan must show the water service entry, meter, backflow preventer, and main shutoff valve so the inspector can verify installation.
- Rough-in inspection
- An inspection performed after piping is installed but before concealment, verifying slope, support, venting, and material compliance.
- Water supply test
- The potable water system is pressurized to at least working pressure, not less than 100 psi, for at least 15 minutes with no pressure drop.
- DWV air test
- A drain, waste, and vent system may be tested with air at 5 psi for 15 minutes as an alternative to a water test with a 10-foot head.
- Final inspection
- The last inspection confirming that fixtures, trim, water heater, gas piping, and all prior corrections are complete and operational.
- Pipe support spacing
- Horizontal cast-iron pipe is supported at 5-foot intervals for 2-inch pipe and 10-foot intervals for 4-inch and larger pipe.
- Correction notice content
- A written notice that cites the code section, describes the observed condition, and specifies the required corrective action and reinspection process.
- Stop-work order
- An order halting construction when work proceeds without a required permit or when a condition presents an immediate hazard to life or safety.
- Inspection record
- A dated entry documenting the inspector, the systems inspected, the findings, and any corrective action required, retained with the permit file.
- Inspector authority limit
- An inspector's authority extends only to the adopted code and permit scope; personal preference is not a valid basis for a correction.
- Contemporaneous records
- Field notes and photographs made at the time of inspection, dated and located, that serve as the official record of observed conditions.
- Conflict of interest
- A personal, family, or financial relationship that could influence an official decision; it must be disclosed and the inspector reassigned.
- Means and methods
- The contractor's chosen construction techniques; the inspector verifies code compliance but does not direct the contractor's means and methods.
- Dispute resolution path
- A contractor disputing a finding may request a written interpretation or file an appeal through the jurisdiction's established procedure.
- Continuing education duty
- Inspectors must stay current with the adopted code edition and local amendments through ongoing training and professional development.
- Uniform enforcement
- Permit fees, inspection scheduling, and enforcement actions must be applied consistently to all applicants; selective enforcement is an ethics violation.
- Appeal period
- An appeal of an inspector's decision must typically be filed with the board of appeals within 20 to 30 days after the decision.