Building Systems and Components Flashcards
7 cards from real NHIE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Building Systems and Components flashcards as text
An inspector finds that the attic insulation covers the eave vents. The most likely consequence is:
Answer: Blocked ventilation causing moisture buildup and potential ice dams
Blocked soffit vents prevent outside air from entering the attic, interrupting the ventilation path that removes heat and moisture and helps prevent ice dams in cold climates.
What is the standard minimum headroom clearance required on a stairway in a residential building?
Answer: 6 feet 8 inches
The IRC requires a minimum headroom clearance of 6 feet 8 inches measured vertically from the stair nosing to the ceiling along the entire stairway.
Which condition would cause a sump pump to fail during a heavy rain event?
Answer: Discharge line check valve installed backwards
A check valve installed in the reverse direction blocks the discharge flow entirely, preventing the pump from removing water from the pit.
What does the term 'kickout flashing' refer to in roofing and waterproofing?
Answer: A diverter flashing that redirects water away from a wall at the end of a roof-wall intersection
Kickout (diverter) flashing is installed at the bottom end of a roof-wall intersection to direct water away from the wall and into the gutter, preventing wall infiltration.
When inspecting a home's electrical system, aluminum branch circuit wiring used in the 1960s–70s is a concern because:
Answer: Aluminum expands and contracts more than copper, causing loose connections and fire risk
Aluminum wiring has a higher coefficient of thermal expansion than copper, so connection points loosen over time with heating and cooling cycles, creating arcing and fire hazards.
What is the primary purpose of a vapor retarder installed on the warm side of insulation in a cold climate?
Answer: Slow the diffusion of indoor moisture into the wall cavity to prevent condensation
A vapor retarder on the warm-in-winter side of insulation slows moisture-laden indoor air from migrating into the cooler wall assembly where it could condense and cause damage.
During an inspection, an inspector notes that a bathroom has no window and no exhaust fan. According to standard practice, this is deficient because:
Answer: Bathrooms require either natural ventilation via a window or mechanical exhaust to remove moisture and odors
IRC requires bathrooms to have either an openable window providing natural ventilation or a mechanical exhaust fan; having neither is a code violation and a moisture management deficiency.