LICT-Interior flashcards
LICT-Interior · 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.
- Occupant load factor
- The floor area per occupant used to compute design occupancy; IBC Table 1004.5 lists values such as 150 gross sq ft for business and 15 net sq ft for tables and chairs.
- Class A interior finish
- A finish material with a flame spread index of 0-25 and smoke-developed index of 450 or less when tested per ASTM E84, permitted in the most restrictive locations.
- Smoke-developed index
- A number from ASTM E84 tunnel testing that rates how much smoke a material produces; values above 450 are not permitted for interior wall and ceiling finishes in most occupancies.
- Egress width factor
- The inches of egress width required per occupant: 0.2 in. for level components and ramps, and 0.15 in. for stairways, per IBC 1005.3.1.
- Travel distance limit
- The maximum distance from the most remote point in a space to an exit; commonly 250 ft unsprinklered and 300 ft sprinklered in non-industrial occupancies.
- Fire door label rating
- The fire-resistance rating assigned to a door assembly, such as 20, 45, 60, 90, or 180 minutes, which must match or exceed the rating of the wall opening it protects.
- Panic hardware threshold
- Egress doors in assembly and educational occupancies serving 50 or more occupants must have panic hardware that releases with one motion without a key or special knowledge.
- Fireblocking
- Approved material installed in concealed spaces, such as at floor levels and soffits, to stop the spread of flame and hot gases through wall and floor cavities.
- Firestopping
- A listed system used to seal penetrations and joints in fire-rated assemblies, tested per ASTM E814 or UL 1479, to maintain the assembly's fire-resistance rating.
- Smoke barrier rating
- A continuous membrane with a minimum 1-hour fire-resistance rating and smoke-tight joints, used to limit smoke migration between areas of a building.
- Accessible route width
- A continuous path with a clear width of at least 36 in.; a 32 in. clear width is permitted at a single point such as a doorway.
- Ramp maximum slope
- The steepest permitted running slope for an accessible ramp is 1:12 (8.33%); steeper slopes require approval and are limited to existing site conditions with landings.
- Handrail height range
- Handrails on stairs and ramps must be 34 to 38 in. above the walking surface, measured vertically to the top of the gripping surface.
- Stair riser and tread
- Riser heights must be 4 to 7 in. and tread depths at least 11 in.; all risers and treads in a flight must be uniform within code tolerance.
- Door maneuvering clearance
- The clear floor space required on each side of an accessible door: 60 in. on the pull side and 36 in. on the push side, measured from the door face.
- Van-accessible parking
- A parking space at least 11 ft wide with a 5 ft access aisle, required for one of every six accessible spaces, providing room for a side lift or ramp.
- Type X gypsum board
- Gypsum board with special core additives that improve fire-resistance; used in rated wall and ceiling assemblies such as 1-hour and 2-hour partitions.
- Gypsum board screw spacing
- Screws are typically spaced 12 in. on center on ceilings and 16 in. on center on walls for single-layer installation, with joints staggered between layers.
- Ceiling grid hanger spacing
- Main runners are supported by hangers at 4 ft on center and within 8 in. of the boundary; cross tees are spaced at 2 ft to carry the acoustical panels.
- Concrete vapor emission limit
- Resilient and adhesive flooring generally requires vapor emission of 3 lb or less per 1000 sq ft per 24 hours by calcium chloride test before installation.
- Tile mortar coverage
- Large-format tile on interior floors requires at least 95% mortar coverage; wet areas and exterior installations require 100% coverage to prevent debonding.
- AWI quality grade
- The Architectural Woodwork Institute defines Economy, Custom, and Premium grades that govern joinery, panel matching, and finish quality for interior millwork.
- STC 50 demising wall
- A sound transmission class of 50 for walls between dwelling units, typically achieved with double studs, resilient channels, and insulated cavities.
- Finish schedule coordination
- A document listing room finishes by code; it must match the reflected ceiling plan and door schedule to avoid conflicts during construction.
- Pre-cover inspection
- An inspection of framing, fireblocking, firestopping, and MEP rough-in performed before gypsum board is installed, documented with photos and signed reports.
- Firestop inspection standard
- ASTM E2174 covers field inspection of through-penetration firestops, and ASTM E2393 covers inspection of fire-resistive joint systems.
- Substantial completion
- The stage when the work is sufficiently complete for its intended use; documented on AIA G704, which states the date, incomplete items, and warranty start.
- Moisture test record
- Documentation of test method, date, location, and results for concrete moisture; retained for the project record and provided to the flooring manufacturer for warranty.
- Mockup requirement
- A full-scale sample assembly built and tested before installation, often required for exterior walls and finish systems to verify appearance, water, and air performance.
- Change of occupancy
- A change in a building's use classification that triggers evaluation under IEBC Chapter 10 for egress, fire protection, and accessibility compliance.
- Sprinkler finish credit
- In fully sprinklered buildings, IBC 803.1.2 permits Class B or C wall and ceiling finishes in many locations that would otherwise require Class A.
- Corridor fire rating
- Corridor walls generally require a 1-hour fire-resistance rating; 0.5-hour is permitted in sprinklered Group R-2 and certain business occupancies.