ICC B3 flashcards
ICC B3 · 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.
- Permit abandonment period
- A permit is deemed abandoned when work does not begin within 180 days of issuance or is suspended for 180 days; the building official may revoke it afterward.
- Certificate of occupancy
- Issued by the building official after a final inspection confirms compliance with approved documents and code; the building may not be occupied before it is issued.
- Board of appeals function
- The board hears appeals of building official interpretations and requests for code variances. Filing an appeal does not stay an enforcement action unless the board orders a stay.
- Approved construction documents
- A permit holder must keep one approved set of construction documents on the job site at all times during construction, and all work must conform to them.
- Occupancy Group R
- Residential occupancies providing sleeping accommodations other than institutional. R-1 includes hotels, R-2 apartments, R-3 one- and two-family dwellings, and R-4 residential care.
- Accessory occupancy limit
- An accessory occupancy must be ancillary to the principal occupancy and may not exceed 10 percent of the floor area of the story in which it is located.
- Grade plane definition
- A reference plane representing the average finished ground level adjoining the building at all exterior walls; it is the datum for measuring building height and stories above grade plane.
- Incidental use
- A subordinate use listed in Table 509, such as a furnace room or hazardous storage, that requires separation from the remainder of the building but is not a separate occupancy.
- Type IA construction
- Noncombustible construction in which structural members have a 3-hour fire-resistance rating; it is the most restrictive type and permits the greatest height and area.
- Frontage increase formula
- If = (F/P - 0.25) x W/30, where F is the building perimeter on open frontage, P is total perimeter, and W is open width capped at 30 feet.
- Fire wall function
- A fire wall divides a building into separate buildings, is continuous from the foundation to above the roof, and is rated between 2 and 4 hours.
- Sprinkler area increase
- A fully sprinklered building may increase its allowable area by 200 percent if one story, or 300 percent if more than one story, under Section 506.3.
- Shaft enclosure requirement
- Stairways, elevators, chutes, and ducts must be enclosed in fire-resistance-rated construction under Section 713, with rated opening protectives provided at each floor level.
- Smoke barrier rating
- A smoke barrier is a continuous membrane with at least a 1-hour fire-resistance rating extending from the floor to the underside of the deck above.
- Draftstopping in attics
- In combustible attic and crawl space areas, draftstopping must subdivide the concealed space into areas not exceeding 3,000 square feet.
- Penetration firestop system
- An approved assembly tested to ASTM E814 or UL 1479 that restores the fire-resistance rating of a floor or wall penetrated by pipes, cables, or ducts.
- Business occupant load factor
- The occupant load factor for business use is 150 gross square feet per occupant, used to compute the number of occupants from the floor area.
- Stair egress width factor
- Egress width for stairs is 0.3 inch per occupant in unsprinklered buildings and 0.2 inch per occupant in sprinklered buildings.
- Accessible route width
- The accessible route must provide at least 36 inches of clear width; the clear floor space needed for a wheelchair is 30 by 48 inches.
- Ramp slope limit
- Ramps on an accessible route have a maximum slope of 1:12, a maximum rise of 30 inches between landings, and landings at least 60 inches long.
- Office live load
- The uniformly distributed live load for office floors is 50 psf, while corridors serving the public are typically designed for 100 psf.
- Floor deflection limit
- Floor members are limited to L/360 deflection under live load where they support plaster or stucco ceilings, and L/240 where they do not.
- Seismic design category
- A classification from A through F assigned using mapped spectral accelerations Ss and S1, the site class, and the risk category; higher categories impose stricter detailing.
- Special inspection
- Quality assurance inspection required by Chapter 17 for items such as welding, high-strength bolting, concrete placement, and soils, performed by an approved agency.
- Weather-resistant barrier
- A water-resistive membrane installed behind exterior wall cladding over the sheathing to drain water and protect the structure from moisture intrusion.
- Combustible wall covering limits
- Combustible exterior wall coverings are restricted by building height, fire separation distance, and sprinkler protection under the tables in Chapter 14.
- Roof covering class
- Roof coverings are rated Class A, B, or C by ASTM E108 testing; the required class depends on the occupancy and the fire separation distance.
- Fire separation distance
- Measured from the exterior wall face to the lot line, the centerline of a street, or another building; it determines required wall ratings and opening limits.
- NFPA 13R system
- An automatic sprinkler system designed to NFPA 13R for residential occupancies up to and including four stories, with reduced requirements compared to NFPA 13.
- High-rise threshold
- A building with an occupied floor more than 75 feet above the lowest level of fire department vehicle access, triggering additional life-safety and fire protection features.
- Standpipe classes
- Class I standpipes provide 2.5-inch outlets for fire department use, Class II provides 1.5-inch hose for occupants, and Class III provides both.
- Climate zone envelope
- The IECC assigns climate zones 1 through 8; envelope insulation and fenestration requirements become more stringent in colder zones, adopted locally through Chapter 13.