ICC B1 flashcards
ICC B1 · 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 requirement
- A permit must be obtained before construction, alteration, repair, or change of occupancy unless the code specifically exempts the work.
- Foundation inspection
- The footing and foundation must be inspected after excavation and before concrete placement or backfill so the inspector can verify bearing soil and dimensions.
- Concealed work inspection
- Work that will be hidden, such as framing, wiring, and plumbing, must be inspected and approved before it is covered by finish materials.
- Certificate of occupancy
- A certificate issued after final inspection confirming that the building complies with the approved plans and code and may be legally occupied.
- Natural light glazing
- Habitable rooms must have glazing area at least 8 percent of the floor area unless the room has equivalent artificial light approved by the code.
- Emergency escape opening
- A required window or door in sleeping rooms with at least 5.7 square feet of clear opening, 20 inches wide, 24 inches high, and a sill no more than 44 inches high.
- Stair riser and tread
- Maximum riser height is 7.75 inches and minimum tread depth is 10 inches, with uniform dimensions throughout the stairway.
- Guard height
- Guards at porches, balconies, and stairs must be at least 36 inches high, with baluster openings small enough to prevent passage of a 4-inch sphere.
- Frost line footing
- Footing bottoms must extend below the local frost line so freezing soil does not lift or damage the foundation.
- Anchor bolt spacing
- Foundation anchor bolts must be at least 1/2 inch diameter, embedded 7 inches, spaced no more than 6 feet, and within 12 inches of plate ends.
- Footing minimum size
- Unless engineered otherwise, concrete footings must be at least 12 inches wide and 6 inches thick and bear on undisturbed soil.
- Foundation drainage
- Drainage must carry water away from footings; footing drains, gravel, and dampproofing are installed where required before backfill.
- Joist bearing
- Floor joists must bear at least 1.5 inches on wood supports and 3 inches on masonry or concrete supports unless approved connectors are used.
- Subfloor span rating
- Subfloor panels must be rated for the joist spacing and fastened with the scheduled nails or screws and adhesive where required.
- Floor live load
- Residential floor design live loads are commonly 40 psf for habitable areas and 30 psf for sleeping rooms, with deflection limits per code.
- Draftstopping
- Draftstopping is required in concealed floor/ceiling spaces to limit air movement and fire spread, typically at specified area intervals.
- Braced wall line
- A line of approved wall bracing designed to resist lateral loads; it must have the required length and method for the wall location.
- Fireblocking
- Fireblocking uses approved materials to seal concealed spaces at floor levels, wall intersections, and other locations to resist fire spread.
- Weather-resistive barrier
- A membrane installed behind exterior wall coverings to prevent water intrusion, lapped and integrated with flashing at openings.
- Header span
- A header must be sized for the opening width and load; it is supported by king studs and jack studs at each side.
- Attic access opening
- An attic access opening must be at least 22 by 30 inches and have at least 30 inches of clear headroom at the opening.
- Attic ventilation ratio
- Attic ventilation must be at least 1/150 of the attic area, or 1/300 where a vapor retarder is installed, with balanced intake and exhaust.
- Rafter tie
- Rafter ties connect opposing rafters in the lower third of the attic to resist outward thrust; they are required unless a ridge beam is used.
- Ceiling joist function
- Ceiling joists support the ceiling and, when connected to rafters, help resist rafter thrust; they must be sized and fastened per tables.
- Ice barrier
- An ice barrier membrane is installed at eaves in areas subject to ice damming, extending from the eave edge to at least 24 inches inside the exterior wall line.
- Drip edge
- A drip edge is required at eave and gable edges to direct water away from the roof deck and fascia.
- Roof slope minimum
- Most roof coverings require a minimum slope; asphalt shingles generally require at least 2:12, with double underlayment between 2:12 and 4:12.
- Roof underlayment
- Underlayment is installed over the roof deck before the covering to provide a secondary water barrier and is required by the covering manufacturer and code.
- Chimney height
- A chimney must extend at least 3 feet above the roof surface and 2 feet above any roof or obstruction within 10 feet.
- Hearth extension
- A fireplace hearth extension must be at least 16 inches in front and 8 inches at the sides; larger openings require a 20-inch front extension.
- Chimney clearance
- Masonry chimneys must have at least 2 inches of clearance from combustible materials, with the space sealed at the top and bottom.
- Fireplace damper
- A damper is required at the fireplace throat to control airflow and reduce heat loss when the fireplace is not in use.