AIT Code Requirements 5 — Questions and Answers
Question 1: In the context of plumbing codes, what is the purpose of a 'trap' installed under a fixture?
- To filter debris from entering the drain
- To maintain a water seal preventing sewer gases from entering the building (Correct answer)
- To regulate water pressure at the fixture
- To provide a cleanout access point
Correct answer: To maintain a water seal preventing sewer gases from entering the building
A plumbing trap holds a water seal that blocks harmful and odorous sewer gases from flowing back into the occupied space.
Question 2: Which edition cycle does the International Code Council (ICC) follow for publishing updated model codes?
- Annually
- Every 2 years
- Every 3 years (Correct answer)
- Every 5 years
Correct answer: Every 3 years
The ICC publishes new editions of its model codes, including the IBC and IRC, on a 3-year cycle.
Question 3: Under the NEC, what type of receptacle is required within 6 feet of a kitchen sink?
- Standard duplex receptacle
- GFCI-protected receptacle (Correct answer)
- AFCI-protected receptacle
- 20-ampere twist-lock receptacle
Correct answer: GFCI-protected receptacle
NEC Article 210.8 requires GFCI protection for receptacles located within 6 feet of a kitchen sink due to shock hazard near water.
Question 4: What is a 'means of egress' as defined by fire and life safety codes?
- A rated fire suppression system exit valve
- A continuous and unobstructed path of travel from any occupied point to a public way (Correct answer)
- The fire department connection on a sprinkler system
- An emergency exit sign powered by a backup generator
Correct answer: A continuous and unobstructed path of travel from any occupied point to a public way
A means of egress is the complete, continuous, and unobstructed path from any point in a building to a safe public way outside.
Question 5: According to the International Building Code, which occupancy group applies to a business office building?
- A-1
- B (Correct answer)
- M
- S-2
Correct answer: B
Occupancy Group B (Business) applies to office buildings, professional service locations, and similar uses under the IBC.
Question 6: Under OSHA's respiratory protection standard (29 CFR 1910.134), what must an employer perform before requiring a worker to use a respirator?
- Issue the respirator and provide a 30-minute training video
- Conduct a medical evaluation to determine the worker's ability to use a respirator (Correct answer)
- Obtain a signed liability waiver from the worker
- Apply for a variance from OSHA before respirator use begins
Correct answer: Conduct a medical evaluation to determine the worker's ability to use a respirator
OSHA requires a medical evaluation by a licensed healthcare professional before an employee is required or permitted to use a respirator.
Question 7: What is the primary distinction between a 'prescriptive' code requirement and a 'performance-based' code requirement?
- Prescriptive codes apply only to new construction; performance codes apply to renovations
- Prescriptive codes specify exact methods and materials; performance codes allow any method that achieves the required outcome (Correct answer)
- Performance codes are enforced by federal agencies; prescriptive codes are enforced locally
- Prescriptive codes require third-party testing; performance codes rely on manufacturer data
Correct answer: Prescriptive codes specify exact methods and materials; performance codes allow any method that achieves the required outcome
Prescriptive requirements tell exactly what to do and use, while performance-based requirements define the end result and allow flexibility in how it is achieved.
AIT Code Requirements 5
In the context of plumbing codes, what is the purpose of a 'trap' installed under a fixture?